UC621XX资料

UNISONIC TECHNOLOGIES CO., LTD
UC621XX C M O S
I C
BOOSTING VOLTAGE REGULATORS
DESCRIPTION
The UTC UC621XX is a positive output voltage regulator that can supply up to 1A of output current using an external transistor. Low power and high accuracy are achieved through CMOS process and metal fuses trimming technologies.
The series consists of a high precision voltage reference, an error correction circuit and a short-circuit protected output driver.
In stand-by mode, supply current can be dramatically cut. Since the input-output voltage differential is small, loss control efficiency is good.
The UTC UC621XX is particularly suited for use with battery operated portable products, and products where supply current regulation is required.
FEATURES
* Ultra Small Input-Output Voltage Differential
: 100mA of output current is available with a differential of 0.1V. (Performance depends on the external transistor characteristics.)* Maximum Output Current : 1A
* Output Voltage Range : 2V ~ 6V in 0.1V increments * Highly Accurate : Set-up voltage ±2%
* Low Power Consumption : Typ.50µA (V OUT = 5.0V)
: Typ.0.2µA (Stand-by)
* Output Voltage Temperature Characteristics: Typ. ±100ppm/ * Input Stability : Typ.0.1%/V
*Pb-free plating product number: UC621XXL
ORDERING INFORMATION
Order Number
Normal Lead Free Plating
Package Packing
UC621xx-AF5-R UC621xxL-AF5-R SOT-25 Tape Reel Note: xx: Output Voltage, refer to Marking Information.
PIN CONFIGURATION
V SS
V IN
V OUT EXT CE
PIN NO. PIN NAME
FUNCTION
1 V SS Ground
2 V IN Supply voltage input
3 V OUT Regulated voltage output
4 EXT Base current control
5 CE Chip enable
FUNCTION SERIES
CE OUTPUT VOLTAGE
H ON UTC UC621XX
L
OFF
MARKING INFORMATION
BLOCK DIAGRAM
V OUT EXT
CE
Vss
ABSOLUTE MAXIMUM RATINGS (Ta=25 )
PARAMETER SYMBOL RATINGS UNIT
Input Voltage V IN 12 V Output Voltage V OUT Vss-0.3 ~ V IN +0.3 V CE Input Voltage V CE Vss-0.3 ~ V IN +0.3 V EXT Output Voltage V O(EXT)12 V EXT Output Current I EXT 50 mA Power Dissipation P D
150 mW
Junction Temperature T J +125 Operating Temperature T OPR -20 ~ +85 Storage Temperature T STG -40 ~ +150 Note:1.Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2.The device is guaranteed to meet performance specification within 0 ~+70 operating temperature range and assured by design from -20 ~+85 .
ELECTRICAL CHARACTERISTICS (Ta=25, unless otherwise specified.)
=
=
===
ELECTRICAL CHARACTERISTICS(Cont.)
OUT(T)
2. V OUT(E) =Effective Output Voltage (i.e. the output voltage when "V OUT(T)+1.0V" is provided at the V IN pin while
maintaining a certain I OUT value).
3. V DIFF = {V IN1 -V OUT1 }
*V OUT1 = A voltage equal to 98% of the Output Voltage whenever an amply stabilized I OUT {V OUT(T)+1.0V} is input.
*V IN1 = The Input Voltage when V OUT1 appears as Input Voltage is gradually decreased.
4. The characteristics for those parameters marked with an asterisk* are liable to vary depending on which
transistor is used. Please use a transistor with a low saturation voltage level and h FE equal to 100 or more.
TYPICAL APPLICATION CIRCUIT
V L Peripherals : PNP Tr: 2SA1213
R BE : 20K ~ 47K
R B : Please refer to Note 2 on the directions for use .
C IN : 10µF(Tantalum)
C L : 47µF(Tantalum )10µF minimum
OPERATIONAL EXPLANATION
Functional Description
Output voltage (V OUT ) can be fixed by revising the external transistor's base current. This can be done by comparing the detected voltage level and the set voltage power supply level.
DIRECTIONS FOR USE
Suggestions for External Comporients 1. PNP Transistor
The selection of a transistor should take into account output current, input voltage and power dissipation for each specific application. It is recommended that a transistor that has a low output saturated voltage (V CE ) and high h FE characteristics be used. 2. R B Resistor
Although the IC unit is protected by a base current remitter circuit, it is recommended that a resistor (R B ) be connected between the transistor's base and the IC's EXT pin to protect the transistor.
Required output current can be calculated using the following equation although characteristic variations and conditions of use should be carefully checked before use. The following equation also indicates the conditions needed to obtain I OUT (max.) at V IN (min.). However, the larger the input current, the larger the output current (I OUT ) that can be obtained.
V IN(min) -1.2(V) 0.7(V) I OUT(max)
R B R BE h FE
3. R BE Resistor, C L Capacitor
To prevent oscillation due to output load variation, use of a phase compensation capacitor C L is recommended. Please use a Tantalum capacitor of at least 10µF. Please also use an R BE resistor of less than 47k Ω. An R BE resistor of between 20k Ω and 47k Ω is recommended for less power consumption.
4. Input Impedance
In order to control oscillation brought about as a result of impedance at the power supply line, connect a capacitor of 10µF or more (Tantalum) between the external transistor's emitter and the ground pin.
Special Note
1. Protection Circuit
The built-in protect circuit is to protect the IC only. Therefore to prevent output shorts and overshoot current through the transistor, use of a resistor R B or an overshoot current protection circuit is recommended. Care should also be taken with the transistor's power dissipation.
TYPICAL CHARACTERISTICS
(1) OUTPUT VOLTAGE vs. OUTPUT CURRENT
200
3.3
UC62133
O u t p u t V o l t a g e ,V O U T (V )
300
100
400
3.0
3.4
3.2
Outpout Current , I O UT (mA
)3.1
500
200
3.0
UC62130
O u t p u t V o l t a g e ,V O U T (V )
300
100
400
2.7
3.1
2.9Outpout Current , I O UT (mA)
2.8500
02005.0
UC62150
O u t p u t V o l t a g e ,V O U T (V )
300100
4004.7
5.1
4.9
Outpout Current, I OUT (mA)
4.8
500
02004.0
UC62140
,V O U T (V )
300100400
3.7
4.1
3.9Outpout Current, I OUT (mA )3.8500
O u t p u t V o l t a g e
(2) OUTPUT VOLTAGE vs. INPUT VOLTAGE
2.5
3.0
3.23.0 3.5
2.82.6UC62130
3
4
3.055
2.85
3.103.00
6
2.952.90 2.42.2
Input Voltage, V IN (V)
O u t p u t V o l t
a g e ,V O U T (V )
Input Voltage, V I N (V)
,V O U T (V )
UC62130
O u t p u t V o l t a g e
2.8
3.3
3.53.3 3.8
3.12.9 UC62133
3
43.3553.15
3.403.306
3.253.20 2.72.5
Input Voltage, V I N (V)
O u t p u t V o l t a g
e ,V O U T (V )
Input Voltage, V I N (V)
,V O U T (V )
UC62133
O u t p u t V o l t a g e
3.5
4
4.2
4.0
4.5
3.83.6
UC62140
4
5
4.05
6
3.85
4.10
4.007
3.953.90 3.43.2
UC62140
,V O U T (V )
O u t p u t V o l t a g e ,
V O U T (V )
Input Voltage , V I N (V)
Input Voltage, V I N (V)
O u t p u t V o l t a g e
4.5
5
5.25.0
5.5
4.84.6
UC62150
5
65.057
4.85
5.105.008
4.954.90 4.44.2
UC62150
,V O
U T (V )
Input Voltage, V I N (V)
Input Voltage, V I N (V)
O u t p u t V o l t a g e ,V O U T (V )
O u t p u t V o l t a g e
(3) INPUT/OUTPUT VOLTAGE DIFFERENTIAL vs. OUTPUT CURRENT
200
600
0.8 UC62133
800
400
1000
0.0
1.0
0.6
0.40.2
I n p u t /O u t p
u t D i f f e r e n t i a l ,V D I F F (V )
Output Current, I OUT (mA)
200
600
0.8 UC62130
800400
10000.0
1.00.6
0.40.2
I n p u t /O
u t p u t D i f f e r e n t i a l ,V D I F F (V )
Output Current, I OUT (mA)
200
600
0.8 UC62150
800400
1000
0.0
1.0
0.6
0.40.2
Output Current, I OUT (mA )
200
600
0.8 UC62140
800400
10000.0
1.00.6
0.40.2
I n p u t /O u t p u t D i f f e r e n t i a l ,V D I F F (V )
Output Current, I OUT (mA)
I n p u t /O u t p u t D i f f e r
e n t i a l ,V D I F F (V )
(4) SUPPLY CURRENT vs. INPUT VOLTAGE
3
4
40S u p p l y C u r r e n t ,I s s (µA )
5
050306
Input Voltage, V I N (V)2010 UC62130
3440S u p p l y C u r r e n t ,I s s (µA )
50
50306
Input Voltage , V I N (V)
2010 UC62133
5
640S u p p l
y C u r r e n t ,I s s µA )
7050
308
Input Voltage, V I N (V)
2010 UC62150
4
5
40
S u p p l y
C u r r e n t ,I s s (µA )
6
050
30
7
Input Voltage, V I N (V)
2010 UC62140
(
(5) OUTPUT VOLTTAGE vs. AMBIENT TEMPERATURE
-40 UC62130
20-2040
60
2.95
3.10
3.05
O u t p u t V o l t a g e ,V O U T (V )
2.90
3.000100
Ambient Temperature , T OPR (℃)
-40
UC62133
20-2040603.25
3.40
3.35
O u t p u t V
o l t a g e ,V O U T (V )
3.203.30
080Ambient Temperature, T OPR (℃)
80100
-40 UC62140
20-20
40
60
3.95
4.10
4.05
O u t p u t V o l t a g e ,V O U T (V )
3.90
4.000100
Ambient Temperature , T OPR (℃)-40
UC62150
20-2040604.95
5.10
5.05
O u t p u t V o
l t a g e ,V O U T (V )
4.90
5.00
080
Ambient Temperature, T OPR (℃)
80100
(6) SUPPLY CURRENT vs. AMBIENT TEMPERATURE
40S u p p l y C u r r e n t ,I s s (µA )
50302010 UC62130
-406010002080
Ambient Temperature, T OPR (℃)
UC62133
-40-2060100
02080Ambient Temperature, T OPR (℃)
-204040
-40-20
40S u p p l y C u r r e n t ,I s s (µA )
40
050
30100
2010 UC62150
40S u p p l y
C
u r r e n t ,I s s (µA )
050
302010 UC62140
20
80-40-20
40
100
20
80
Ambient Temperature , T OPR (℃)
Ambient Temperature, T OPR (℃)
60
60
(7) INPUT TRANSIENT RESPONSE
5
UC62130
1
643
Time (0.4msec /div )
I n p u t V o l t a g e ,V I N (V )
23.4 UC 62130
3.13.03.23.3
Time (0.4msec/div)
2.9O u t p u t V o l t a g e ,V O U T (V )
5
UC62133
1
643
Time (0.4msec /div)
I n p u t V o l t a g e ,V I N (V )
2 3.7
UC62133
3.43.33.53.6Time (0.4msec/div )
3.2
O u t p u t V o l t a g e ,V O U T (V )
6 UC62140
2
754Time (0.4msec/div)
I n p u t V o l t a g e ,V I N (V )
3 4.4
UC62140
4.14.04.24.3Time (0.4msec/div)
3.9
O u t p u t V o l t a g e ,V O U T (V )
5.4
7 UC62150
5.1
5.05.25.33
865
Time (0.4msec/div )
I n p u t V o l t a g e ,V I N (V )
4 4.9
O u t p u t V o l t a g e ,V O U T (V )
5.4
7 UC62150
5.1
5.05.25.33
8
65
Time (0.4msec/div )
I n p u t V o l t a g e ,V I N (V )
4 4.9
O u t p u t V o l t a g e ,V O U T (V )
(8) LOAD TRANSIENT RESPONSE
1000
3.05
UC62130
4002006008002.85
3.103.002.95
Time (10msec/div )O u t p u t V o l t a g e ,V O U T (V )
2.900
O
u t p u t V o l t a g e ,I O U T (m A )
10003.35
UC62133
400200600800
3.15
3.403.303.25
Time (10msec/div )O u t p u t V o l t a g e ,V O U T (V )
3.200
O u t p u t V o l t a g e ,I O U T (m A )
1000
UC62150
400
200600800Time (10msec/div)0
O u t p u t V o l t a g e ,I O U T (m A )
4.05
UC62140
3.85
4.104.003.95
Time (10msec/div )
O u t p u t V o l t a g e ,V O U T (V )
3.90
(9) RIPPLE REJECTION RATE
0.01
0.1
50 UC62130
R i p p l e R e j e c t i o n R a t e ,R R (d B )
1
10604010
30200Ripple Frequency ,f (kHz)0.01
0.1
50 UC62133
R i p p l e R e j e c t i o n R a t e ,R R (d B )
1
1060401030200
Ripple Frequency ,f (kHz)
0.01
0.150 UC62150
R i p p l e R e j e c t i o n R a t e ,R R (d B )
110604010
30200
0.01
0.150 UC62140
R i p p l e
R e j e c t i o n R a t e ,R R
(d B )
110604010
Ripple Frequency ,f (kHz )
30200Ripple Frequency ,f (kHz)。