QX2304规格书(2014版)
广东电网公司配网0.4kV开关箱(不锈钢材质)订货技术条件书(2014年版)
广东电网公司配网0.4kV开关箱（不锈钢材质）订货技术条件书广东电网公司二〇一五年六月目录1.总则 (1)2.引用标准 (1)3.名词术语 (2)4.使用条件 (4)5.额定参数 (4)6.技术要求 (9)7.试验 (20)8.标志、包装、运输与贮存 (21)9.供货范围 (22)10.厂商应提供的技术文件 (23)11.附表 (23)广东电网公司配网0.4kV开关箱（不锈钢材质）订货技术条件书1.总则1.1本技术条件规定了配网0.4kV变压器开关箱（不锈钢材质）的使用条件、额定参数、技术要求、试验、包装运输等具体内容。
1.2本技术条件适用于额定电压 0.4kV，工作频率为 50Hz，开关箱（不锈钢材质），即低压成套开关设备和控制设备的制造、选型、验收、安装和维护。
1.3本设备技术条件提出的是最低限度的技术要求。
除本技术条件中规定的技术参数和要求外，其余均应遵循最新版本的国家标准（GB）、电力行业标准（DL）、IEC标准和国际单位制（SI）。
如果供方有自已的标准或规范，应提供标准代号及其有关内容，并须经需方同意后方可采用，但原则上采用更高要求的标准。
1.4如果供方选用本技术条件规定以外的标准时，则需提交这种替换标准供审查和分析。
仅在供方已证明替换标准相当或优于技术条件规定的标准，并从需方处获得书面的认可才能使用。
提交供审查的标准应为中文或英文版本。
2.引用标准GB 7251.1-2005 低压成套开关设备和控制设备第 1 部分:型式试验和部分型式试验成套设备GB/T 14048.1-2006 低压开关设备和控制设备总则第 1 部分:总则GB/T 14048.2-2008 低压开关设备和控制设备总则第 2 部分:断路器GB/T 14048.3-2008 低压开关设备和控制设备总则第 3 部分:开关、隔离器、隔离开关及熔断器组合电器GB 12747-1991 自愈式低电压并联电容器GB/T14549-1993 电能质量公用电网谐波GB 15576 低压成套无功功率补偿装置GB/T50227-1995 并联电容器成套装置设计规范DL/T597-1996 低压无功补偿控制器订货技术条件DL/T 842-2003 低压并联电容器装置使用技术条件JB/T 7113-1993 低压并联电容器装置- 1 -JB/T 7115-1993 低压无功就地补偿装置JB/T 9663-1999 低压无功功率自动补偿控制器JB/T 10695-2007 低压无功功率动态补偿装置GB/T 14549-1993 电能质量公用电网谐波GB 50254 电气安装工程低压电器施工及验收规范分：低压成套开关设备GB 7251.3 对非专业人员可进入场地的低压成套开关设备和控制设备-配电板的特殊要求JB/T 2930 低压电器产品型号编制方法GB4208-2008 外壳防护等级(IP代码)HG/T 2503-93 聚碳酸酯树脂GA 132 材料产烟毒性分析GB 191 包装储运图示标志3.名词术语3.1开关箱（不锈钢材质）由一个或多个开关设备和与之相关的控制、测量、信号、保护、调节等设备组成电气和机械连接，并用结构部件完整地组装在一起的一种组合体。
泉芯QX2304规格书(2014版)
0.023
0.014
0.017
0.173
0.181
0.061 REF
0.091
0.102
0.155
0.167
0.060TYP
0.118TYP
0.035
0.047
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ＱＸ２３０４（２０１４版）规格书
欢迎咨询，竭诚服务
深圳市深圳泉芯电子有限公司 联系人：刘先生 手机：１３５２８８９８７６７ ＱＱ：２３５５３６８８７３ 欢迎咨询，竭诚服务
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Efficiency (%)
96.0 94.0 92.0 90.0 88.0 86.0 84.0 82.0 80.0
1
ＱＸ２３０４（２０１４版）规格书
Output Current VS. Efficiency
QX2304
VIN=
2.5V 3V 2V 1V 1.5V
10
100
1000
Output Current (mA)
0.041 0.012
0.045 0.016
0.004
0.008
0.111
0.119
0.059 0.104
0.037TYP
0.067 0.116
0.071
0.079
0.028REF
0.012 0ٛ
0.024 8ٛ
深圳市深圳泉芯电子有限公司 联系人：刘先生 手机：１３５２８８９８７６７ ＱＱ：２３５５３６８８７３ 欢迎咨询，竭诚服务
温度
ESD
符号
说明
Vmax ILXmax
VOUT 和 VLX 端的最大电压值 LX 端最大电流
Psot-89 SOT-89 封装最大功耗
SI2304DS PDF规格书
Symbol VDS VGS ID IDM PD
RthJA TJ Tstg
Rating 30 ±20 2.5 2.0 10 1.25 0.8 100 166 150
-55 to 150
Unit V
A
W ℃/W
℃
SI2304DS N-Channel Enhancement MOSFET
■ Electrical Characteristics Ta = 25℃
I D – Drain Current (A)
rDS(on)– On-Resistance ( Ω )
■ Typical Characterisitics
Output Characteristics 10
VGS = 10 V - 5 V 8
6
4V
4
2 0
0
0.30
0V 3V
2
4
6
8
10
VDS – Drain-to-Source Voltage (V)
Min Typ Max Unit
30
V
0.5 μA
10
±100 nA
1.5
3
V
6 A
4
92 117 mΩ
142 190
4.6
S
240
110
pF
17
2.4 4
4.5 10 nC
0.8
1.0
8 20
12 30 ns
17 35
8 20
1.25 A
0.77 1.2 V
■ Marking
Marking
2
SI2304DS N-Channel Enhancement MOSFET
QX2304一节干电池的无线鼠标应用方案_V01
应用领域
无线鼠标 无线键盘 无线便携设备
PCB 布图参考 PFM
PFM
图6
PCB TopLayer
图7
PCB BottomLayer
图8
demo 测试板
典型应用参数
参数 电源电压
最大输入电压 启动电压 保持电压
PFM
测试条件 最小值 典型值 最大值
PFM
单位
除非特别说明，VIN=1.5V，TA=25ºC，CIN=10uF/25V（1206） ，COUT=22uF/25V（1206） ，L=47uH（CD54）
输出电流
VOUT 端 输入电流 IOUT0 用 电 压 VOUT+0.5V 驱 动 VOUT 管脚 6 uA
效率
效率 η VIN=1.5V，IOUT=10mA 92 %
振荡特性
振荡频率 FS IOUT=10mA,VIN 从 1.5V 到 0.9V 42 156 KHz
带载测试数
PFM
PFM
2.785 2.784 2.783 2.782 2.781 2.781 2.78 2.778 9.83 9.83 9.82 9.82 9.82 9.81 9.81 9.81 92.04 92.03 91.76 91.61 91.38 91.03 90.75 90.41 40 40 40 40 30 30 30 30
D * 1 D * RLOAD LMIN 2* FS
2
（ 2）
该公式是在连续电流模式， 忽略寄生电阻、 同步管的导通压降的情况下计算，因此实际 的值还要大一些。 其次应选择内阻 RL 小的电感。电感损耗 功率如下：
RL RLOAD * 1 D
2
QX2304中文规格书
典型应用电路图V INV OUT 图1：QX2304典型应用电路图概述QX2304是一款高效率、低功耗、低纹波、高工作频率的PFM同步升压DC/DC 变换器。
QX2304仅需要三个外围元件，就可将低输入电压升压到所需的工作电压。
QX2304可通过内部修调电路（步进0.1V）来获得所需的输出电压。
QX2304内置的同步开关管可使效率最高可达95%，QX2304工作于PFM模式，可有效降低轻载模式下的纹波。
QX2304具有极低的静态电流特别适合于手持电子设备应用。
QX2304采用SOT23、SOT23-5、SOT89-3、TO92封装特点最高效率：95%最高工作频率：300 KHz低静态电流：15uA可选输出电压：2.5V～3.6V输出精度：±2.5%宽输入电压范围：0.9V～3.6V低纹波，低噪声应用领域1～2个干电池的电子设备电子词典、数码相机、LED手电筒、LED灯、血压计、MP3、遥控玩具、无线耳机、无线鼠标键盘、医疗器械、防丢器、汽车防盗器、充电器、VCR、PDA等手持电子设备订货信息产品型号QX2304L XX X封装形式T ：SOT23F ：SOT23-5E ：SOT89-3TO ：TO92输出电压25：2.5V 26：2.6V …36：3.6V丝印输出电压C XX X批号25：2.5V 26：2.6V …36：3.6V封装及管脚分配31213254132VOUTGND LX CXXXEN VOUT NCGNDLXGND VOUT LXCXXXCXXXQX2304LXXT (SOT23)123CXXXQX2304LXXF (SOT23-5)QX2304LXXE (SOT89-3)QX2304LXXTO(TO92)GND VOUTLX管脚定义内部电路方框图LXGND图2：QX2304的内部电路方框图极限参数（注1）注1：超过上表中规定的极限参数会导致器件永久性损坏。
而工作在以上极限条件下可能会影响器件的可靠性。
QX2304内置二极管升压IC规格书
( ) D * 1 - D 2 * R
LMIN ≥
LOAD
2*F
(2)
S
该公式是在连续电流模式，忽略其他 诸如寄生电阻、二极管的导通压降的情况 下推导出的，实际的值还要大一些。
其次，考虑到通过电感的电流的纹波 问题，同样在连续电流模式下忽略寄生参 数，当电感过小时，会造成电感上的电流 纹波过大，从而使得通过电感、芯片中的 同步管和功率管的最大电流过大。由于同 步管和功率管不是理想的，所以在特别大 的电流时其功率损耗会加大， 导致整个 DC- DC 电路的转换效率降低。
应用领域
1～2 个干电池的电子设备 电子词典、数码相机、LED 手电筒、
LED 灯、血压计、MP3、遥控玩具、 无线耳机、无线鼠标键盘、医疗器械、 防丢器、汽车防盗器、充电器、VCR、 PDA 等手持电子设备
典型应用电路图
L1
VIN
LX
VOUT
VOUT
QX2304
CIN
GND
EN
COUT
QX2304_DS01CN
为了获得较高的转换效率，除了要求 用户选择合适的电感、电容外，芯片内部 的功率管和同步管的导通电阻也要非常小。 功率管也要求由驱动能力很强的驱动电路 驱动，保证功率管开关时快的上升沿和下 降沿，从而大大减小了开关状态时的动态 损耗。
如上所述，电感的寄生串联电阻，同 步管和开关管的导通电阻的大小会影响功
SOT89-3 封装尺寸图：
QX2304 高效 PFM 同步升压 DC-DC 变换器
QX2304_DS01CN
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TO92 封装尺寸图：
QX2304 高效 PFM 同步升压 DC-DC 变换器
QX2304_DS01CN
QX2303规格书(2014版)
QX2303 系列产品总共有四种封装形 式：SOT23、SOT23-5、SOT89-3 和 TO-92。 其中，SOT23-5 封装内置了 EN 使能端， 可控制变换器的工作状态，当 EN 使能端 输入为低电平时，芯片处于关断省电状态， 功耗降至最小。
典型应用电路图
2014版CGG-1K中文说明书
烟管接口 LAF 带烟气限流环
风机 集烟箱 主热交换器
燃烧室
燃气燃烧器 点火电极 膨胀水箱 安全阀
供暖循环滤网 燃气组合阀
系统泄水阀 冷水滤网带流量限制器
7
温度限制器 出水传感器2
出水传感器1
安装图
4
安全提示 / 标准和规程
请严格遵守该安全提示，以防止人员的伤害和财产的损失。
- 必须遵守国家有效的安全规章和安装规程。 - 安装、首次试运行、检查、维护和维修必须由授权的专业人员（暖通工程师 / 安装承 包商）执行。 - 在设备和加热系统不工作时必须断开电源（比如单独的保险或主开关）并防止重新 合闸。 - 该隔离装置使所有没有接地的导线隔离开，并与电网保持最小 3mm 的隔离空间。 - 带安全技术功能的任何部件都不允许维修。 - 配件更换时必须使用原厂合适的配件或制造商允许的相应配件。
冬季运行 { 位置 2-8} 循环泵运行在供暖操作模式。 夏季运行 开关在 循环泵关（供暖关闭）的位置，仅加热生活用水、防冻和泵状态保 护激活，即每 24 小时循环泵运行大约 30 秒。 烟气测试模式 开关旋转至该位置，锅炉 输出最大的加热功率。指示灯闪烁黄色 15 分钟 或直至超过最大的出水温度。 温度计 / 压力计 上面显示供暖热水的温度，下面显示加热系统的水压。
与配件控制器 BM / AWT / ART 结合使用时生活热水和供暖热水的调整不起作 用。
5
尺寸 / 装配尺寸
① 供暖出水 ② 生活热水 ③ 冷水 ④ 供暖回水 ⑤ 燃气连接
6
3063769_2014xx
CGG-1K-24/28
泉芯QX3400规格书(2014版)
（3）采样电 阻的选择 采 样 电 阻 是 用 于 设 置 输 出 电 压 的 ，因 此 ，要 得 到 更 一 致 的 输 出 电 压 ，请 采 用 误
VIN (管脚6):电压输入端。VIN给IC一个启动电压，当VOUT大于VIN，MOSFET的 偏 置 电 压 将 从 输 出 获 取 。 因 此 ， 一 旦 启 动 ， 操 作 完 全 独 立 于 VIN。 IC的 的 工 作 仅 仅 受限于输出电压和电池的串联内阻。
外部元件选择
（ 1） 电 感 的 选 择 由 于 采 用 1.5MHz的 快 速 开 关 工 作 频 率 ，QX3400 能 使 用 极 小 的 贴 片 电 感 。在 大
同步升压 DC/DC 转换器 QX3400 QX3400
特性:
功能描述
最高至 96% 的转换效率 低 电 压 启 动 ： 0.9V 关断电流: < 1μA 输 入 电 压 ： 0.9V～ 5.0V 输出电压：2.5V～5.0V (使用肖特基 二极管可高至 5.2V ) 低开关导通电阻RDS(ON), 内部开关 电阻: 0.35Ω 1.4MHz 固定开关频率 高开关导通电流: 1A 短路保护 小 体 积 封 装 : SOT-23-6 (无 铅 封 装 )
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QX3400
电感电流一般设在电感标称的峰值电流（ＩＰ）的 20% 到 40% 。采用高频 铁 氧 体 磁 心 电 感 比 廉 价 的 铁 心 电 感 的 功 率 损 耗 要 小 得 多 ，并 能 提 高 电 路 的 效 率 。电 感 应 选 择 低 内 阻 的 ，以 减 小 内 阻 引 起 的 功 率 损 耗 。为 最 小 化 辐 射 噪 音 ，请 使 用 带 屏 蔽 环 的 工 形 绕 线 电 感 。 有 关 电 感 及 其 供 应 商 请 参 看 表 1。
MC2304BDS规格书
SPECIFICATIONS (TA = 25oC UNLESS OTHERWISE NOTED)
Parameter Static
Gate-Threshold Voltage Gate-Body Leakage Zero Gate Voltage Drain Current On-State Drain Current
pF
ns
Notes a. Pulse test: PW <= 300us duty cycle <= 2%. b. Guaranteed by design, not subject to production testing.
FREESCALE reserves the right to make changes without further notic e to any products herein. freescale makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does freescale assume any liability arising ou t of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in freescale data sheet s and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. freescale does not convey any license under its patent rights nor the rights of others. freescale products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the freescale product could create a situation where personal injury or death may occur. Should Buyer purchase or use freescale products for any such uninte nded or unauthorized application, Buyer shall indemnify and hold freescale and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that freescale was negligent regarding the design or m anufacture of the part. freescale is an Equal Opportunity/Affirmative Action Employer.
泉芯QX5253规格书(2014版)
VLS = R1 ∗VIN R1+ R2
当 VLS 高过 0.15*VIN 时，光控开关使得 LED 关闭，当 VLS 低过 0.11*VIN 时，光控开关使 得 LED 灯打开。
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封装：DIP-8
特点
Ÿ 工作电压: 1.8V-3.0V Ÿ 输出电流: 3mA-300mA Ÿ 专利的过放保护：关断无闪烁 Ÿ 内部集成光控开关 Ÿ 内部集成肖特基二极管 Ÿ LED 可完全关断 Ÿ 外接元件仅需一个电感 Ÿ 高效率 Ÿ DIP-8 封装
典型应用一
典型应用二
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QX5253
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管脚定义
管脚号 管脚名称
1
LX
2
LS
3
SBAT
4
NC
5
NC
6
BAT
7
LED
8
VSS
QX5253
功能描述 功率开关管漏极 光检测输入端 接太阳能电池正端 不接（空置） 不接（空置） 接充电电池正端 接 LED 阴极 接地
极限参数
符号 VMAX IMAX TOPR TSTG VESD
参数 IC 各端极限电压 LX 端极限电流 工作温度范围 存贮温度 ESD 电压(人体模型)
QX5253
封装
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QX5233
太阳能 LED 驱动器 QX5253
概述
QX5253 是一款专为太阳能 LED 照明装置 设计的专用集成电路。它由开关型驱动电路、 光开关电路、过放电保护电路、内部集成肖特 基二极管、LED 关断等电路组成。仅需一个外 接电感即可组成太阳能照明装置。QX5253 采 用专利技术，使得欠压关断时 LED 灯无闪烁。
QX5256规格书(2014版)
典型应用电路图(a)降压应用电路图 (b)升压应用电路图图1：QX5256典型应用电路图概述 QX5256是一款专门为LED 手电筒、矿灯、头灯等设计的控制芯片。
QX5256支持一组LED 灯，灯的控制由开关来完成。
QX5256有两种工作模式：在工作模式1下，LED 灯可在“全亮”和“闪亮”这两种工作状态之间切换；在工作模式2下， LED 灯可从“全亮”状态切换到1/4亮度的“暗亮”状态再到“闪亮”状态，这三种工作状态是循环往复切换的。
QX5256最大工作电流为200mA 。
QX5256采用SOT23、SOT23-5和TO92等三种封装。
特点 工作电压：2V~6V 工作模式1：全亮、闪亮 工作模式2：全亮、暗亮、闪亮 最大LED 电流：200mA最大扩流：2A 欠压保护：2V 应用领域 LED 手电筒 LED 矿灯、头灯订货信息产品型号QX5256丝印TO-92封装：5256TX A :工作模式1B :工作模式2XXXX批号年份SOT23封装：256XL :工作模式1H :工作模式2SOT23-5封装：256F封装及管脚分配1235256TX XXXXTO-92GND VDD LED312VDDGNDLED256XSOT23VDD GNDSOT23-513254DRVLEDMODE256F管脚定义内部电路方框图VDDGNDLEDMODEDRV图2：QX5256内部电路方框图极限参数（注1）注1：超过上表中规定的极限参数会导致器件永久性损坏。
而工作在以上极限条件下可能会影响器件的可靠性。
电特性除非特别说明，T A=25 o C封装信息SOT23封装尺寸图：SOT23-5封装尺寸图：TO-92封装尺寸图：。
032ASD开关柜综合测控装置安装使用说明书V3.0教程
2014明纬开关电源手册
25
Environment HLG-150H, HLG-185H, HLG-240H
26
HLG-320H
27
MDR-10 / 20 / 40 / 60 / 100
28
DR-15, DR-30, DR-60, DR-100
29
DR-45, DR-75, DR-120,
30
DIN Series
DRP-240, DRP-480, DRP-480S DRH-120, DRT-240/480/960
2013
April
Introduction
Green Enterprises, Green Products
EXCELLENCE
TAIWAN
SUPERIOR BRANDS
E stablished in 1982, MEAN WELL is a leading standard switching power supply manufacturer in the world. During the past 30 years, our slogan “your reliable power partner” has been curved into the minds of all MEAN WELL employees and put into effect thoroughly between MEAN WELL and our valuable customers. Sure-footedly nurtured the core competency of P, Q, C, D, S, R (Product, Quality, Cost, Delivery, Service, and Reliable Relationship), we made every effort to accomplish the one stop shopping environment with the most complete standard power product lines.
Polarion X 2304 用户手册说明书
Feature Matrix:Polarion X 2304 Polarion X 2304Unpublished work. © 2023 SiemensThis Documentation contains trade secrets or otherwise confidential information owned by Siemens Industry Software Inc. or its affiliates (collectively, “Siemens”), or its licensors. Access to and use of this Documentation is strictly limited as set forth in Customer’s applicable agreement(s) with Siemens. This Documentation may not be copied, distributed, or otherwise disclosed by Customer without the express written permission of Siemens, and may not be used in any way not expressly authorized by Siemens.This Documentation is for information and instruction purposes. Siemens reserves the right to make changes in specifications and other information contained in this Documentation without prior notice, and the reader should, in all cases, consult Siemens to determine whether any changes have been made.No representation or other affirmation of fact contained in this Documentation shall be deemed to be a warranty or give rise to any liability of Siemens whatsoever.If you have a signed license agreement with Siemens for the product with which this Documentation will be used, your use of this Documentation is subject to the scope of license and the software protection and security provisions of that agreement.If you do not have such a signed license agreement, your use is subject to the Siemens Universal Customer Agreement, which may be viewed at https:///en-US/sw-terms/base/uca/, as supplemented by the product specific terms which may be viewed at https:///en-US/sw-terms/supplements/.SIEMENS MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS DOCUMENTATION INCLUDING, BUT NOT LIMITEDTO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF INTELLECTUAL PROPERTY. SIEMENS SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL OR PUNITIVE DAMAGES, LOST DATA OR PROFITS, EVEN IF SUCH DAMAGES WERE FORESEEABLE, ARISING OUT OF OR RELATEDTO THIS DOCUMENTATION OR THE INFORMATION CONTAINED IN IT, EVEN IF SIEMENS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.TRADEMARKS: The trademarks, logos, and service marks (collectively, "Marks") used herein are the property of Siemens or other parties. No one is permitted to use these Marks without the prior written consent of Siemens or the owner of the Marks,as applicable. The use herein of third party Marks is not an attempt to indicate Siemens as a source of a product, but is intended to indicate a product from, or associated with, a particular third party. A list of Siemens’ Marks may be viewed at: /global/en/legal/trademarks.html. The registered trademark Linux® is used pursuant to a sublicense from LMI, the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide basis.About Siemens Digital Industries SoftwareSiemens Digital Industries Software is a global leader in the growing field of product lifecycle management (PLM), manufacturing operations management (MOM), and electronic design automation (EDA) software, hardware, and services. Siemens works with more than 100,000 customers, leading the digitalization of their planning and manufacturing processes. At Siemens Digital Industries Software, we blur the boundaries between industry domains by integrating the virtual and physical, hardware and software, design and manufacturing worlds. With the rapid pace of innovation, digitalization is no longer tomorrow’s idea. We take what the future promises tomorrow and make it real for our customers today. Where today meets tomorrow. Our culture encourages creativity, welcomes fresh thinking and focuses on growth, so our people, our business, and our customers can achieve their full potential.Support Center: Send Feedback on Documentation: /doc_feedback_formUnrestrictedUnrestrictedUnrestrictedUnrestrictedXs - Xcelerator Share integration is supported but requires an additional Xcelerator Share license.Xw - Via webservices API only, not via xUnit import.[1] - Modify one or many properties for multiple Work Items at once. (The same value for multiple Work Items)[2] - Edit multiple Work Items in the table interface and save the changes at once.[3] - Configure and display the tree table.[4] - Export tree tables to MS Excel, Word ..., Export traceability reports to MS Excel.[5] - Sum of LiveDocs + Info Pages + Live Reports[6] - Documented templates. (The process is documented on the Pages.)[7] - Only in managed services deployments.Unrestricted。
60065(2014版)标准-说明书
60065（2014版）标准—说明书和标识NO.Item Verdict 标识符号1、(5.4.a) Where in a manufacturer's service documentation, for example in circuit diagrams orlists of components, a symbol is used to indicate that a specific component shall bereplaced only by the component specified in that documentation for safety reasons,the following symbol shall be used:，ISO 7000-0434 (2004-01)This symbol may also be put adjacent to the relevant component.This symbol shall not be placed on components.P N如果在制造厂商的维修文件中，例如在电路图或元器件表中要使用一种符号，用来表示某一特定的元器件由于安全的原因，只能用该文件中规定的元器件来更换，则应当使用下列符号：，ISO 7000-0434 (2004-01)该符号也可以标在有关元器件的附近。
该符号不得标在元器件上。
2、(5.4.b) Where a loudspeaker grille, removable from the outside by the use of a tool, coin orother object, is relied on as protective cover (see 9.2), the following marking, or equ-ivalent, shall be visible on the enclosure after removal of the grille:CAUTIONTo prevent electric shock hazard, do not connect tomains power supply while grille is removed.Alternatively, the symbol , IEC 60417-5036 (200210) shall be visible after removal of the grille and the caution wording above shall appear in the userinstructions, accompanied by the symbol.P N在一个扬声器格栅的地方，可从外部通过使用一种工具，像硬币或者其他对象作为一种防护罩来依靠，下列标志或者类似标志，在删除格栅后，应该在外壳上清晰可见：警告为了防止点击危险，当格栅被删除时，不能连接到供电电源。
QX2304中文免费资料
如上所述，电感的寄生串联电阻，同 步管和开关管的导通电阻的大小会影响功
第三，一般来说，不考虑效率问题， 小电感的负载能力强于大电感。但是由于 在相同负载条件下，大电感的电流纹波和 最大的电流值相对较小，所以大电感可以 使得电路在更低的输入电压下启动。（以 上均是在相同的寄生电阻条件下推导出的 结论）
QX2304 的工作频率高达 300KHz，其 目的是为了能够减小外部的电感尺寸，故 QX2304 只需要 4.7uH 以上的电感就可以 保证正常工作，但是输出端如果需要输出
12 of 14
TO92 封装尺寸图：
QX2304 高效 PFM 同步升压 DC-DC 变换器
13 of 14
应用领域
1～2 个干电池的电子设备 电子词典、数码相机、LED 手电筒、
LED 灯、血压计、MP3、遥控玩具、 无线耳机、无线鼠标键盘、医疗器械、 防丢器、汽车防盗器、充电器、VCR、 PDA 等手持电子设备
典型应用电路图
L1
VIN
LX
VOUT
VOUT
QX2304
CIN
GND
EN
COUT
图 1：QX2304 典型应用电路图
( ) D * 1 - D 2 * R
LMIN ≥
LOAD
2*F
(2)
S
该公式是在连续电流模式，忽略其他 诸如寄生电阻、二极管的导通压降的情况 下推导出的，实际的值还要大一些。
其次，考虑到通过电感的电流的纹波 问题，同样在连续电流模式下忽略寄生参 数，当电感过小时，会造成电感上的电流 纹波过大，从而使得通过电感、芯片中的 同步管和功率管的最大电流过大。由于同 步管和功率管不是理想的，所以在特别大 的电流时其功率损耗会加大， 导致整个 DC- DC 电路的转换效率降低。
QX34062规格书(2014版)
典型应用电路图V图1：QX34062典型应用电路图概述 QX34062是一款高效率，1.2MHz 固定工作频率，电流模式PWM 同步降压稳压器。
其输入电压范围为2.5V 至5.5V ，非常适合单节锂电池供电的电子产品。
QX34062内置了功率开关管和同步整流开关管，无需外接肖特基二极管，而1.2MHz 的工作频率也使得外围元器件的体积可以微型化。
QX34062还采用小的SOT23-5封装以节省PCB 面积。
QX34062的输出电压通过外部电阻设定，反馈端电压设置为0.6V 。
无负载时的工作电流为180uA ，关断时的工作电流小于1uA 。
在输出负载很低时，QX34062会自动降低工作频率以提高转换效率从而延长电池使用寿命。
100%占空比也可延长电池使用时间。
特点 效率：高达95% 低静态电流：180uA 待机电流：小于1uA 工作电压：2.5V~5.5V输出电压可调：低至0.9V输出电流：500mA(V IN =3.6V &V OUT =1.8V) PWM/PFM 自动模式切换 电流模式控制 短路保护应用领域 数码相机和数码摄像机各种媒体播放器，掌上电脑和PDA订货信息产品型号QX34062丝印QX_VG封装及管脚分配ENSWGNDFBVIN13254QX_VGSOT23-5管脚定义内部电路方框图图2：QX34062的内部电路方框图极限参数（注1）注1：超过上表中规定的极限参数会导致器件永久性损坏，而工作在以上极限条件下可能会影响器件的可靠性。
电特性除非特别说明，V IN =3.6V，T A =25ºC特性曲线除非特别说明，T A=25ºC应用指南工作原理QX34062是一款固定工作频率、电流模式降压架构的同步降压器件，内置主开关（P 沟道MOSFET ）和同步开关（N 沟道MOSFET ）。
外部元件的选择受负载要求的影响，在应用中要合理选择外部元件，以使器件处于最佳工作状态。
2014 LX商品说明书
1 LX shown in Starfire Pearl // Options shown.3LX shown in Silver Lining Metallic // Options shown.2DO EVERYTHING YOU CAN IMAGINE.AND A FEW MORE THINGS THAT YOU CAN’T. THE UNPARALLELED 2014 LX.4LX shown in Nebula Gray Pearl // Options shown.56LX shown in Parchment leather with Mahogany wood trim // Options shown.7EXCEPTIONALL8LX shown in Silver Lining Metallic // Options shown.910LX shown in Parchment leather with Mahogany wood trim // Options shown.11LX shown in Silver Lining Metallic // Options shown.13The available Wide-view Front Monitor 16 captures a broad view of the forward and peripheral surroundings, which then displays on the Navigation15403 lb-ftt orque @ 3,600 rpm 1290% of maximum torqueavailable @ 2,200 rpm7,000-poundt owing capacity 13,14G. Available Wide-view Front and Side Monitor system 4 H. Blackleather interior with Mahogany trim I. Available Rear-SeatEntertainment System (RSES ) J. Electroluminescent instrumentation with multi-information display K. Steering-wheel controls L. USB connectivity1716 A. Transfer case, Crawl Control,11 vehicle height andsuspension controls B. Parchment leather interior with Mahogany trim C. Power open/close rear door D. Subscription-free Lexus Enform App Suite 7 E. Versatile rear seating F. Three-row, eight-passenger seating20Four-zone automatic climate control with smog sensor and automatic circulation mode // Lexus Memory System // Power tilt-and-slide moonroof // Power rear door // Leather-trimmed interior // Mahogany interior trim // 10-airbag system 20 // Navigation System 17 // Lexus Enform 7 one-year trial subscription // Lexus Enform App Suite 7 // Full-timefour-wheel drive // Adaptive Variable Suspension (AVS ) with Active Height Control (X-AHC ) // Crawl Control 11 with T urn Assist // 14-way driver’s seat(including dual-function lumbar and cushion extender ) // Power-sliding,60/40-split middle-row seatwith 40/20/40-split seatback // Auto on/off High-Intensity Discharge (HID ) headlamps with Dual-swivel Adaptive Front Lighting System (AFS )21 // Wood- and leather-trimmed steering wheel and shift knob // Smart Stop technology 22 // T railer Sway Control 1820-in split-five-spoke alloy wheels 27 STANDARDKEYSTANDARD FEATURESPACKAGES WHEELS For complete list, visit /LX/featuresINDIVIDUAL OPTIONSMark Levinson 19-speaker 450-watt @ less than0.1% THD, 20–20,000 Hz 23 Reference Surround Sound Audio System 1 // Heated and ventilated front seats and heated second-row seats // Dual-screen DVD Rear-Seat Entertainment System (RSES )9 // Wide-view Front and Side Monitor system 4 with Intuitive Parking Assist // Pre-Collision System (PCS )15 and Dynamic Radar Cruise Control 24For complete list, visit /LX/options For complete list, visit /LX/packagesFor complete list of Genuine Lexus Accessories, visit /LX/accessoriesLUXURY PACKAGE WITH PRE-COLLISION SYSTEM AND DYNAMIC RADAR CRUISE CONTROLSemi-aniline leather-trimmed interior with contrast stitching // Heated steering wheel // Heated and ventilated front seats // Heated second-row seats // Mahogany-trimmed door switchplates and rear-center armrest cover // Front-seat cool box // SmartAccess 25,26 cardkeyLX shown in Silver Lining Metallic // Options shown.21HEIGHT 75.6 INKEY SPECS5.7L V87.5S12,28LX 570ENGINEPERFORMANCE12 / 17 / 1429FUEL ECONOMY, EPA-ESTIMATED RATINGS (CITY / HIGHWAY / COMBINED ) 4W D6-SPEEDSTANDARDDRIVETRAINSEQUENTIAL-SHIFT ELECTRONICALLY CONTROLLED TRANSMISSIONEST MPG0–60 INFor complete specs, visit /LX/specsWIDTH 77.6 INOVERALL LENGTH 197.0 INWHEELBASE 112.2 INHORSEPOWER383HP12TORQUE GROUND CLEARANCECARGO CAPACITY (MAX )TOWING CAPACITY403LB-FT 128.9IN83.1CU FT 57,000LB 13,1423EXTERIORSILVER LINING METALLIC STARFIRE PEARL NEBULA GRAY PEARLSATIN CASHMERE METALLICCLARET MICABLACK ONYX22INTERIOR BLACKLEATHERPARCHMENTLEATHERTRIMMAHOGANYFPOFSC Logo—, NOVEMBER 14, 2012“THE BIGGEST, MOST CAPABLE AND MOST OPULENT SPORT-UTILITY ON THE BLOCK.”WARRANTY Four-year/50,000-mile Lexus Limited Warranty. Six-year/70,000-mile Powertrain Warranty. Six-year/unlimited-mileage Corrosion Perforation Warranty. All warranties with zero deductible. See the LX Warranty and Services Guide at your Lexus dealer for details. DISCLOSURES 1. Mark Levinson ® is a registered trademark of Harman International Industries, Inc. 2. The LX 570 is designed to meet most off-road driving requirements. Abusive use may result in bodily harm or damage. Lexus encourages responsible operation to help protect you, your vehicle and the environment. Seatbelts should be worn at all times. Please do not allow passengers to ride in the cargo area. Tow hitch receivers/ball mount kits are not intended to provide crash protection. 3. The backup camera does not provide a comprehensive view of the rear area of the vehicle. Y ou should also look around outside your vehicle and use your mirrors to confirm rearward clearance. Cold weather may limit effectiveness and view may become cloudy. 4. The Wide-view Front and Side Monitor does not provide a comprehensive view of the front and side areas of the vehicle. Y ou should also look around outside your vehicle and use your mirrors to confirm clearance. Cold weather will limit effectiveness and view may become cloudy. 5. The Wide-view Side Monitor system does not provide a comprehensive view of the front passenger-side area of the vehicle. Y ou should also look around outside your vehicle and use your mirrors to confirm clearance. Cold weather will limit effectiveness and view may become cloudy. 6. Cargo and load capacity limited by weight and distribution. 7. Always drive safely, obey traffic laws & focus on the road while driving. Apps/services vary by phone/carrier; functionality depends on many factors. Select apps use large amounts of data, you are responsible for all charges. Apps/services are subject to change. Apps identified by ™ or ® are trademarks or registered trademarks of their respective companies. For enrollment, cost and more details, see /enform. 8. Contact with the response center may not be available in all areas. Service Agreements required. A variety of subscription terms available; charges will vary. See for details. 9. A single-disc DVD player is standard. A separate DVD player or game system utilizing the center console’s video/audio inputs is required in order to use the split-screen function of the dual-screen system. 10. Headphones are for passenger use only. Do not use while operating vehicle. 11. Crawl Control is designed for driving on difficult terrain at low speeds. It assists the driver by controlling acceleration and braking, allowing the driver to focus on steering. The LX 570 is designed to meet off-road driving requirements, but off-roading is inherently dangerous. Always wear seatbelts. 12. Ratings achieved using the required premium unleaded gasoline with an octane rating of 91 or higher. If premium fuel is not used, performance will decrease. 13. Before towing, confirm your vehicle and trailer are compatible, hooked up properly and you have any necessary additional equipment. If gross trailer weight is above 5,000 lb (2,268 kg ), it is necessary to use a weight-distributing hitch with sufficient capacity. Do not exceed any Weight Ratings and follow all instructions and cautions from your trailer-hitch manufacturer and vehicle Owner’s Manual . The maximum amount you can tow depends on the total weight of any cargo, occupants and available equipment. 14. Please consult your Lexus dealer or Owner’s Manual for towing and load specifications. 15. The Pre-Collision System is designed to help reduce the crash speed and damage in certain frontal collisions only. It is not a collision-avoidance system and is not a substitute for safe and attentive driving. System effectiveness depends on many factors, such as speed, driver input and road conditions. See Owner’s Manual for further information. 16. The Wide-view Front Monitor does not provide a comprehensive view of the front area of the vehicle. Y ou should also look around outside your vehicle and use your mirrors to confirm clearance. Cold weather will limit effectiveness and view may become cloudy. 17. Availability and accuracy of the information provided by the Navigation System or any SiriusXM™ and/or HD Radio™ services mentioned (if installed ) are dependent upon many factors. Use common sense when relying on information provided. Services not available in every city or roadway. Periodic Enform app updates do not include Navigation updates. Navigation updates are available at an additional cost from your local dealer. See Navigation Owner’s Manual or contact SiriusXM for details. 18. Trailer Sway Control (TSC ) is an electronic system designed to help the driver maintain vehicle control under adverse conditions. It is not a substitute for safe driving practices. Factors including speed, road conditions and driver steering input can all affect whether TSC will be effective in preventing a loss of control. See Owner’s Manual for details. 19. TORSEN ® is a registered trademark of Zexel Torsen, Inc. 20. All the airbag (AB ) systems are Supplemental Restraint Systems. All ABs are designed to inflate only under certain conditions and in certain types of severe collisions: frontal and knee ABs typically inflate in frontal collisions; side and side curtain ABs in side collisions; Roll-Sensing Curtain ABs at a severe tilt degree, roll or lateral G-force. In all other accidents, the ABs will not inflate. To decrease the risk of injury from an inflating AB, always wear seatbelts, sit upright in the middle of the seat as far back as possible and do not lean against the door. Do not put objects in front of an AB or around the seatback. Do not use a rearward-facing child seat in any front passenger seat. The force of an inflating AB may cause serious injury or death. See Owner’s Manual for further information/warnings. 21. The Adaptive Front Lighting System helps improve vision at night. Situations such as dirty windshield, rapidly changing light conditions or hilly terrain will limit effectiveness, requiring the driver to manually turn off. See Owner’s Manual for details. 22. Smart Stop Technology operates only in the event of certain simultaneous brake and accelerator pedal applications. When engaged, the system will reduce power to help the brakes bring the vehicle to a stop. Factors including speed, road conditions and driver input can all impact stopping distance. Smart Stop T echnology is not a substitute for safe and attentive driving and does not guarantee instant stopping. See Owner’s Manual for further details. 23. Continuous average power, all channels driven, at less than 0.1% THD; 20–20,000 Hz. 24. Dynamic Radar Cruise Control is designed to assist the driver and is not a substitute for safe and attentive driving practices. See Owner’s Manual for details. 25. The SmartAccess system may interfere with some pacemakers or cardiac defibrillators. If you have one of these medical devices, please talk to your doctor to see if you should deactivate this system. 26. The engine immobilizer is a state-of-the-art anti-theft system. When you insert your key into the ignition switch or bring a SmartAccess fob into the vehicle, the key transmits an electronic code to the vehicle. The engine will only start if the code in the transponder chip inside the key/fob matches the code in the vehicle’s immobilizer. Because the transponder chip is embedded in the key/fob, it can be costly to replace. If you lose a key or fob, your Lexus dealer can help. Alternatively, you can find a qualified independent locksmith to perform high-security key services by consulting your local Y ellow Pages or by contacting . 27. 20-in performance tires are expected to experience greater tire wear than conventional tires. Tire life may be substantially less than 20,000 miles, depending upon driving conditions. 28. Performance figures are for comparison only and were obtained with prototype vehicles by professional drivers using special safety equipment and procedures. Do not attempt. 29. 2014 EPA-estimated ratings. Actual mileage will vary.Lexus strives to build vehicles to match customer interest, and thus they typically are built with popular options and option packages. Not all options/packages are available separately, and some may not be available in all regions of the country. See for information about options/packages commonly available in your area. If you would prefer a vehicle without any or with different options, contact your dealer to check for current availability or the possibility of placing a special order. Specifications, features, equipment, technical data, performance figures, options, and color and trim are based upon information available at time of printing, are subject to change without notice, and are for mainland U.S.A. vehicles only. Some vehicles shown with available equipment. See your Lexus dealer for details. Lexus reminds you to wear seatbelts, secure children in rear seat, obey all traffic laws and drive responsibly. For more information, call 800-USA-LEXUS (872-5398) or visit . To learn more about your financing options, contact your Lexus dealer or call Lexus Financial Services at 800-874-7050. P4-021 (XX/13) 00217-LXBRO -14 Printed in U.S.A. (XXXM ) ©2013 Lexus.。
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电特性
除非特别说明，CIN =100uF，COUT =100uF，L1 =47uH，TA =25oC
参数
符号
测试条件
最小值 典型值 最大值 单位
电源电压
最大输入电压
VIN_MAX
启动电压
VSTART
ILOAD =1mA， VIN 从 0V 上升到 2V
ILOAD =1mA，
保持电压
VHOLD
0.6
VIN 从 2V 下降到 0V
效率
效率
η
90
EN 使能端输入
EN 端输入高电平 EN 端输入低电平
0.4*VOUT
振荡特性
最高振荡频率
FMAX
300
振荡占空比
DCOSC
83
VOUT
V
0.8
V
V
2.5
%
1000
mA
uA
uA
1
uA
95
%
V
0.2
V
KHz %
QX2304_DS01CN
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QX2304 高效 PFM 同步升压 DC-DC 变换器
230
0.75
W
85
oC
120
oC
240
oC
TSD2 TO92 封装的焊接温度（时间少于 5 秒） 250
260
oC
ESD
VHBM
HBM
2000
V
注 1：超过上表中规定的极限参数会导致器件永久性损坏。而工作在以上极限条件下可能会影响器件的可靠性。
QX2304_DS01CN
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QX2304 高效 PFM 同步升压 DC-DC 变换器
r=′ r + IMAX * RESR VOUT
(Hale Waihona Puke )当大负载的时候，由于 ESR 造成的纹 波将成为最主要的因素，输出电压纹波可 能会大大超过 100mV。同时，ESR 又会增 加效率损耗，降低转换效率。所以建议使 用 ESR 低的钽电容，或者多个电容并联使 用。
输入电容
只要电源稳定，即使没有输入滤波电 容，DC-DC 电路也可以输出低纹波、低噪 声的电流电压。但是当电源离 DC-DC 电 路较远， 建议在 DC-DC 的输入端就近加 上 10uF 以上的滤波电容，可以减小输出 的噪声。
典型曲线
除非特别说明，CIN =47uF，COUT =100uF，L1 =47uH，TA =25oC
启动电压（V）
输出电流对应最小启动电压
3
2.5
2
1.5
1
0.5
0
1
10
100
输出电流（mA）
输出电压（V）
输出电流对应输出电压
2.82
2.8
2.78
2.76
2.74
1.5V
2.72
2.7
2.8V
2.68
1V
2.66 VIN=1V, 1.5V, 2V, 2.8V
2.64
5
50
2V 500
输出电流（mA）
效率（%）
输出电流对应效率
100
98
96
94
92
90
88 2V
86
84
82 VIN=1V, 1.5V, 2V, 2.8V
80
5
50
1V 1.5V
输出电流（mA）
2.8V 500
QX2304_DS01CN
QX2304 高效 PFM 同步升压 DC-DC 变换器
概述
QX2304 是一款高效率、低功耗、低 纹波、高工作频率的 PFM 同步升压 DC-DC 变换器。
QX2304 仅需要三个外围元件，就可 完成将低输入的电池电压变换升压到所需 的工作电压。
QX2304 的输出电压，可通过内部调 节进行选择（步进 0.1V），方便客户应用 于不同的输出负载情况。QX2304 系统输 出电压具有低纹波，低噪声的特点。
CXXX
1
2
3
GND VOUT LX
QX2304LXXE (SOT89-3)
CXXX
123
GND LX VOUT
QX2304LXXTO (TO92)
QX2304_DS01CN
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QX2304 高效 PFM 同步升压 DC-DC 变换器
管脚定义
管脚序号
SOT23 SOT23-5 SOT89-3
QX2304 内置的同步开关管可极大降 低开关管上的损耗，使效率最高可达 95%。 QX2304 工作于 PFM 模式，可有效降低轻 载模式下的损耗，提高设备的使用周期。 同时，芯片低的静态电流可进一步降低系 统损耗。
特点
最高效率：95% 最高工作频率：300 KHz 低静态电流：15uA 可选输出电压：2.5V～3.6V 输出精度：±2.5% 宽输入电压范围：0.9V～3.6V 低纹波，低噪声
( ) D * 1 - D 2 * R
LMIN ≥
LOAD
2*F
(2)
S
该公式是在连续电流模式，忽略其他 诸如寄生电阻、二极管的导通压降的情况 下推导出的，实际的值还要大一些。
其次，考虑到通过电感的电流的纹波 问题，同样在连续电流模式下忽略寄生参 数，当电感过小时，会造成电感上的电流 纹波过大，从而使得通过电感、芯片中的 同步管和功率管的最大电流过大。由于同 步管和功率管不是理想的，所以在特别大 的电流时其功率损耗会加大， 导致整个 DC- DC 电路的转换效率降低。
电感。
输出电容选择
不考虑电容的等效串联电阻（ESR）， 输出电压的纹波为：
= r
= ∆VOUT VOUT
D
R *C
LOAD
OUT
(4)
所以为了减小输出的纹波，需要比较 大的输出电容值。但是输出电容过大，就 会使得系统的反应时间过慢，成本也会增 加。所以建议使用 22uF 的电容，如果需 要更小的纹波，则需要更大的电容。如果 负载较小（10mA 左右），则可以使用较 小的电容。当考虑电容的 ESR 时，输出纹 波就会增加：
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QX2304 高效 PFM 同步升压 DC-DC 变换器
应用指南
工作原理
QX2304 是一款 BOOST 架构、同步电 压型 PFM 控制模式的 DC-DC 变换器。
QX2304 所需的外部元件非常少，只 需要一个电感和输入、输出电容就可以提 供 2.5V~3.6V 的稳定的低噪声输出电压。
批号
输出电压
25：2.5V 26：2.6V … 36：3.6V
QX2304_DS01CN
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封装及管脚分配
VOUT
3
QX2304 高效 PFM 同步升压 DC-DC 变换器
LX
GND
5
4
CXXX
CXXX
1
2
GND
LX
QX2304LXXT (SOT23)
1
2
3
EN VOUT NC
QX2304LXXF (SOT23-5)
图 1：QX2304 典型应用电路图
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QX2304 高效 PFM 同步升压 DC-DC 变换器
订货信息
产品型号
QX2304L XX X
封装形式
T：SOT23 F：SOT23-5 E：SOT89-3 TO：TO92
输出电压
25：2.5V 26：2.6V … 36：3.6V
丝印
C XX X
QX2304_DS01CN
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封装信息
SOT23 封装尺寸图：
QX2304 高效 PFM 同步升压 DC-DC 变换器
QX2304_DS01CN
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SOT23-5 封装尺寸图：
QX2304 高效 PFM 同步升压 DC-DC 变换器
QX2304_DS01CN
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第三，一般来说，不考虑效率问题， 小电感的负载能力强于大电感。但是由于 在相同负载条件下，大电感的电流纹波和 最大的电流值相对较小，所以大电感可以 使得电路在更低的输入电压下启动。（以 上均是在相同的寄生电阻条件下推导出的 结论）
QX2304 的工作频率高达 300KHz，其 目的是为了能够减小外部的电感尺寸，故 QX2304 只需要 4.7uH 以上的电感就可以 保证正常工作，但是输出端如果需要输出
输出电压
输出电压精度
△VOUT VIN =2V，ILOAD =10mA
-2.5
电源电流
电流极限值
ILIMIT
600
800
无负载输入电流
IIN0
VIN =1.8V，VOUT =3.3V
15
驱动 VOUT 引脚电压为正
VOUT 输入电流
IOUT0
常 VOUT 电压+0.5V
6
待机输入电流
IINQ
无负载，EN 为低电平
0.3
W
最大功耗
PSOT23-5 PSOT89-3
SOT23-5 封装最大功耗 SOT89-3 封装最大功耗
0.3
W
0.5
W
温度
PTO92
TO92 封装最大功耗
TA
工作温度范围
-20
TSTG
存储温度范围
-40
TSD1
SOT23、SOT23-5 和 SOT89-3 封装的焊 接温度（时间少于 30 秒）
为了获得较高的转换效率，除了要求 用户选择合适的电感、电容外，芯片内部 的功率管和同步管的导通电阻也要非常小。 功率管也要求由驱动能力很强的驱动电路 驱动，保证功率管开关时快的上升沿和下 降沿，从而大大减小了开关状态时的动态 损耗。