次级控制恒压恒流AP4320规格书
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Symbol Parameters Conditions Min Typ Max Unit
TOTAL CURRENT CONSUMPTION ICC Total Supply Current Not Including the Output Sinking Current VICTRL=VSENSE=0V, VOUT=Open – 190 – μA
A Product Line of Diodes Incorporated
AP4320
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
Description
The AP4320 is a highly integrated solution for a constant voltage/constant current mode SMPS application. The AP4320 contains one 2.5V voltage reference and two operational amplifiers. The 2.5V voltage reference, combined with one operational amplifier, makes of an ideal voltage controller for use in adapters and battery chargers. The low voltage reference, combined with another operational amplifier, makes of an ideal current limiter for output low side current sensing. The AP4320 is available in SOT26 package.
Typical Applications Circuit
VOUT+ To primary
AP4320
2.5V
R2
6 VCC
IL
R4
VOUT 5
R3
C1
OP1 +
+
VCTRL
3
Load
OP2
GND
C3
2
R5
ICTRL VSENSE
4
1
R1
C2 (Optional)
R6 VOUT-
R SS
VOUT VREF
A Product Line of Diodes Incorporated
AP4320 Typical Applications Circuit (Cont.)
VOUT+ To primary
6
AP4320
2.5V
R2
IL
VCC
R4 VOUT 5 VCTRL 3 R3
C1
OP1
+
+ Load
OP2
Functional Block Diagram
VCC
2.5V 6 5
OP1
VOUT
3
V CTRL
OP2
2
GND
4
1
I CTRL
V SENSE
AP4320
Document number: DS36786 Rev. 2 - 2
3 of 11 www.diodes.com
December 2013
© Diodes Incorporated
Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are str ess ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Symbol VCC Parameter Power Supply Voltage Min 3.5 Max 36 Unit V
AP4320
Document number: DS36786 Rev. 2 - 2
4 of 11 www.diodes.com
R1 R 2 R1
Typical Application 1
CurrentLimit
VSENSE RSS
AP4320
Document number: DS36786 Rev. 2 - 2
1 of 11 www.diodes.com
December 2013
© Diodes Incorporated
Pin Assignments
(Top View)
Pin 1 Mark
VSENSE GND VCTRL
1 2 3
6 5 4
VCC
VOUT ICTRL
Features
Constant Voltage and Constant Current Control Low External Component Count Easy Compensation Low Supply Current: 190A Precision Internal Voltage Reference: 2.5V Operating Supply Voltage: 3.5V to 36V Low Current Sense Threshold: 30mV/50mV Totally Lead-free & Fully RoHS Compliant (Note 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3)
A Product Line of Diodes Incorporated
AP4320 Pin Descriptions
Pin Number 1 2 3 4 5 6 Pin Name VSENSE GND VCTRL ICTRL VOUT VCC Input pin of the current control loop Ground Input pin of the voltage control loop Input pin of the current control loop Output pin. Sinking current only Power Supply Function
VOLTAGE CONTROL LOOP Gmv Transconduction Gain (VCTRL). Sink Current Only Voltage Control Loop Reference Input Bias Current (VCTRL) – TA=+25oC VREF IIBV – – 1 2.488 2.48 – 3.5 2.50 – 25 – 2.512 V 2.52 – nA mA/mV
December 2013
© Diodes Incorporated
A Product Line of Diodes Incorporated
AP4320 Electrical Characteristics (@VCC=20V, -25C <TA<+125C, unless otherwise specified.)
CURRENT CONTROL LOOP Gmi Transconduction Gain (ICTRL). Sink Current Only – TA = +25° C AP4320A VSENSE Current Control Loop Reference TA = +25° C AP4320B AP4320A IIBI OUTPUT STAGE VOL IOS Low Output Voltage at 2mA Sinking Current Output Short Circuit Current. Sink Current Only – VOUT=4V – – 30 30 100 – mV mA Current Out of Pin ICTRL at VSENSE AP4320B VICTRL=-50mV – VICTRL=-30mV 48.5 46 – – 50 50 16 16 51.5 54 – – μA – 1.5 29 28 7 30 30 – 31 32 mV mA/mV
SOT26 (K6 Package)
Applications
AC/DC Adapters Battery Chargers LED Drivers
Notes:
Biblioteka Baidu
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, < 900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
VOUT+ To primary
6
AP4320
2.5V
R2
IL
VCC
OP1
R4 VOUT 5 R3
C1
+
+ VCTRL 3 Load
OP2
C3 GND
2
R5 I CTRL
4
V SENSE
1
R1
C2 (Optional)
R6 VOUTR SS
VOUT VREF
R1 R 2 ( I L RSS ) R1
GND ICTRL
4 2
C3
VSENSE
1
R5 R1
C2 (Optional)
R6 VOUTR SS
VOUT [VREF ( I L RSS )]
R1 R 2 ( I L RSS ) R1
Typical Application 2
CurrentLimit
VSENSE RSS
A Product Line of Diodes Incorporated
AP4320 Absolute Maximum Ratings (Note 4)
Symbol VCC VOUT VICTRL VSENSE VVCTRL TJ TSTG TLEAD θJA Parameter Power Supply Voltage Input Voltage (VOUT Pin) Input Voltage (ICTRL Pin) Input Voltage (VSENSE Pin) Input Voltage (VCTRL Pin) Junction Temperature Storage Temperature Lead Temperature (Soldering, 5sec) Thermal Resistance (Junction to Ambient) Rating -0.3 to 38 -0.3 to VCC -0.3 to 18 -0.3 to 18 -0.3 to 18 +150 -55 to +150 +260 250 Unit V V V V V C C C C/W
CurrentLimit
Typical Application 3
VSENSE VREF RSS
VSENSE VREF
AP4320
Document number: DS36786 Rev. 2 - 2
2 of 11 www.diodes.com
December 2013
© Diodes Incorporated
TOTAL CURRENT CONSUMPTION ICC Total Supply Current Not Including the Output Sinking Current VICTRL=VSENSE=0V, VOUT=Open – 190 – μA
A Product Line of Diodes Incorporated
AP4320
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
Description
The AP4320 is a highly integrated solution for a constant voltage/constant current mode SMPS application. The AP4320 contains one 2.5V voltage reference and two operational amplifiers. The 2.5V voltage reference, combined with one operational amplifier, makes of an ideal voltage controller for use in adapters and battery chargers. The low voltage reference, combined with another operational amplifier, makes of an ideal current limiter for output low side current sensing. The AP4320 is available in SOT26 package.
Typical Applications Circuit
VOUT+ To primary
AP4320
2.5V
R2
6 VCC
IL
R4
VOUT 5
R3
C1
OP1 +
+
VCTRL
3
Load
OP2
GND
C3
2
R5
ICTRL VSENSE
4
1
R1
C2 (Optional)
R6 VOUT-
R SS
VOUT VREF
A Product Line of Diodes Incorporated
AP4320 Typical Applications Circuit (Cont.)
VOUT+ To primary
6
AP4320
2.5V
R2
IL
VCC
R4 VOUT 5 VCTRL 3 R3
C1
OP1
+
+ Load
OP2
Functional Block Diagram
VCC
2.5V 6 5
OP1
VOUT
3
V CTRL
OP2
2
GND
4
1
I CTRL
V SENSE
AP4320
Document number: DS36786 Rev. 2 - 2
3 of 11 www.diodes.com
December 2013
© Diodes Incorporated
Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are str ess ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Symbol VCC Parameter Power Supply Voltage Min 3.5 Max 36 Unit V
AP4320
Document number: DS36786 Rev. 2 - 2
4 of 11 www.diodes.com
R1 R 2 R1
Typical Application 1
CurrentLimit
VSENSE RSS
AP4320
Document number: DS36786 Rev. 2 - 2
1 of 11 www.diodes.com
December 2013
© Diodes Incorporated
Pin Assignments
(Top View)
Pin 1 Mark
VSENSE GND VCTRL
1 2 3
6 5 4
VCC
VOUT ICTRL
Features
Constant Voltage and Constant Current Control Low External Component Count Easy Compensation Low Supply Current: 190A Precision Internal Voltage Reference: 2.5V Operating Supply Voltage: 3.5V to 36V Low Current Sense Threshold: 30mV/50mV Totally Lead-free & Fully RoHS Compliant (Note 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3)
A Product Line of Diodes Incorporated
AP4320 Pin Descriptions
Pin Number 1 2 3 4 5 6 Pin Name VSENSE GND VCTRL ICTRL VOUT VCC Input pin of the current control loop Ground Input pin of the voltage control loop Input pin of the current control loop Output pin. Sinking current only Power Supply Function
VOLTAGE CONTROL LOOP Gmv Transconduction Gain (VCTRL). Sink Current Only Voltage Control Loop Reference Input Bias Current (VCTRL) – TA=+25oC VREF IIBV – – 1 2.488 2.48 – 3.5 2.50 – 25 – 2.512 V 2.52 – nA mA/mV
December 2013
© Diodes Incorporated
A Product Line of Diodes Incorporated
AP4320 Electrical Characteristics (@VCC=20V, -25C <TA<+125C, unless otherwise specified.)
CURRENT CONTROL LOOP Gmi Transconduction Gain (ICTRL). Sink Current Only – TA = +25° C AP4320A VSENSE Current Control Loop Reference TA = +25° C AP4320B AP4320A IIBI OUTPUT STAGE VOL IOS Low Output Voltage at 2mA Sinking Current Output Short Circuit Current. Sink Current Only – VOUT=4V – – 30 30 100 – mV mA Current Out of Pin ICTRL at VSENSE AP4320B VICTRL=-50mV – VICTRL=-30mV 48.5 46 – – 50 50 16 16 51.5 54 – – μA – 1.5 29 28 7 30 30 – 31 32 mV mA/mV
SOT26 (K6 Package)
Applications
AC/DC Adapters Battery Chargers LED Drivers
Notes:
Biblioteka Baidu
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, < 900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
VOUT+ To primary
6
AP4320
2.5V
R2
IL
VCC
OP1
R4 VOUT 5 R3
C1
+
+ VCTRL 3 Load
OP2
C3 GND
2
R5 I CTRL
4
V SENSE
1
R1
C2 (Optional)
R6 VOUTR SS
VOUT VREF
R1 R 2 ( I L RSS ) R1
GND ICTRL
4 2
C3
VSENSE
1
R5 R1
C2 (Optional)
R6 VOUTR SS
VOUT [VREF ( I L RSS )]
R1 R 2 ( I L RSS ) R1
Typical Application 2
CurrentLimit
VSENSE RSS
A Product Line of Diodes Incorporated
AP4320 Absolute Maximum Ratings (Note 4)
Symbol VCC VOUT VICTRL VSENSE VVCTRL TJ TSTG TLEAD θJA Parameter Power Supply Voltage Input Voltage (VOUT Pin) Input Voltage (ICTRL Pin) Input Voltage (VSENSE Pin) Input Voltage (VCTRL Pin) Junction Temperature Storage Temperature Lead Temperature (Soldering, 5sec) Thermal Resistance (Junction to Ambient) Rating -0.3 to 38 -0.3 to VCC -0.3 to 18 -0.3 to 18 -0.3 to 18 +150 -55 to +150 +260 250 Unit V V V V V C C C C/W
CurrentLimit
Typical Application 3
VSENSE VREF RSS
VSENSE VREF
AP4320
Document number: DS36786 Rev. 2 - 2
2 of 11 www.diodes.com
December 2013
© Diodes Incorporated