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UNISONIC TECHNOLOGIES CO., LTD UC621XX
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.
3 2 1
CMOS IC
5 4
SOT-25
*Pb-free plating product number: UC621XXL
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.50A (VOUT = 5.0V) : Typ.0.2A (Stand-by) * Output Voltage Temperature Characteristics: Typ. 100ppm/ * Input Stability : Typ.0.1%/V
ORDERING INFORMATION
Order Number Package Normal Lead Free Plating UC621xx-AF5-R UC621XXL-AF5-R SOT-25 Note: xx: Output Voltage, refer to Marking Information. Packing Tape Reel
UC621XXL-AF5-R (1)Packing Type (2)Package Type (3)Lead Plating (4)Output Voltage Code (1) R: Tape Reel (2) AF5: SOT-25 (3) L: Lead Free Plating, Blank: Pb/Sn (4) xx: refer to Marking Information
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UC621XX
PIN CONFIGURATION
VOUT VIN
3 2
CMOS IC
VSS
1
4
5
EXT
PIN NO. 1 2 3 4 5 PIN NAME VSS VIN VOUT EXT CE
CE
FUNCTION
Ground Supply voltage input Regulated voltage output Base current control Chip enable
FUNCTION
SERIES UTC UC621XX CE H L OUTPUT VOLTAGE ON OFF
MARKING INFORMATION
PACKAGE VOLTAGE CODE
3
MARKING
2 1
SOT-25
30:3.0V 33:3.3V 40:4.0V 50:5.0V
62
VOLTAGE CODE
4
5
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UC621XX
BLOCK DIAGRAM
CMOS IC
VDD EXT Current Limit CE + Voltage Reference
VOUT
Vss
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ABSOLUTE MAXIMUM RATINGS (Ta=25 )
CMOS IC
PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 12 V Output Voltage VOUT Vss-0.3 ~ VIN+0.3 V CE Input Voltage VCE Vss-0.3 ~ VIN+0.3 V EXT Output Voltage VO(EXT) 12 V EXT Output Current IEXT 50 mA Power Dissipation PD 150 mW Junction Temperature TJ +125 Operating Temperature TOPR -20 ~ +85 Storage Temperature TSTG -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.)
UC62130( VOUT(T) =3.0V) PARAMETER Output Voltage (Note2) Input Voltage EXT Output Voltage CE Level Voltage High Low SYMBOL VOUT(E) VIN VEXT VCEH VCEL VOUT VDIFF IOUT (max) Iss1 Iss2 ILEAK ICEH ICEL VOUT VIN VOUT VOUT TOPR VOUT SYMBOL VOUT(E) VIN High Low VEXT VCEH VCEL VOUT VDIFF IOUT (max) Iss1 Iss2 ILEAK ICEH ICEL VOUT VIN VOUT VOUT TOPR VOUT TEST CONDITIONS IOUT =50mA, VIN=4.0V MIN 2.940 TYP 3.000 MAX 3.060 8 8 1.5 VIN =4.0V, 1mAIOUT100mA IOUT =100mA VIN=4.0V VIN =4.0V, VCE =Vss VIN =8.0V, VCE =VIN VCE =VIN VCE =Vss IOUT =50mA, 4.0VVIN8.0V IOUT =10mA, -20 TOPR85 -60 100 1000 50 0.6 80 0.5 0.1 0 0.3 0.25 60 UNIT V V V V V mV mV mA A A A A A %/V ppm/
Load Stability (Note 4) Input-Output Voltage Differential Maximum Output Current(Note 4) Supply Current1 Supply Current2 EXT Leakage Current High CE Level Current Low Input Stability (Note 4) Output Voltage Temperature Characteristics (Note 4) UC62133(VOUT(T)=3.3V) PARAMETER Output Voltage (Note2) Input Voltage EXT Output Voltage CE Level Voltage
-0.2
-0.05 0.1 100
TEST CONDITIONS IOUT =50mA, VIN =4.3V
MIN 3.234
TYP 3.300
MAX 3.366 8 8
UNIT V V V V V mV mV mA A A A A A %/V ppm/ 4 of 14
1.5 VIN =4.3V, 1mA IOUT IOUT =100mA VIN =4.3V VIN =4.3V, VCE =Vss VIN =8.0V, VCE =VIN VCE =VIN VCE =Vss IOUT =50mA, 4.3VVIN8.0V IOUT =10mA, -20 TOPR85 100mA -60 100 1000 50 0.6 80 0.5 0.1 0 0.3 0.25 60
Load Stability (Note 4) Input-Output Voltage Differential Maximum Output Current (Note 4) Supply Current1 Supply Current2 EXT Leakage Current High CE Level Current Low Input Stability (Note 4) Output Voltage Temperature Characteristics (Note 4)
-0.2
-0.05 0.1 100
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UC621XX
ELECTRICAL CHARACTERISTICS(Cont.)
UC62140 (VOUT(T)=4.0V) PARAMETER Output Voltage (Note2) Input Voltage EXT Output Voltage CE Level Voltage High Low SYMBOL VOUT(E) VIN VEXT VCEH VCEL VOUT VDIFF IOUT (max) Iss1 Iss2 ILEAK ICEH ICEL VOUT VIN VOUT VOUT TOPR VOUT SYMBOL VOUT(E) VIN High Low VEXT VCEH VCEL VOUT VDIFF TEST CONDITIONS IOUT =50mA, VIN =5.0V MIN 3.92 TYP 4.000
CMOS IC
MAX 4.08 8 8
UNIT V V V V V mV mV mA A A A A A %/V ppm/
1.5 VIN =5.0V, 1mA IOUT IOUT =100mA VIN =5.0V VIN =5.0V, VCE =Vss VIN =8.0V, VCE =VIN VCE =VIN VCE =Vss IOUT =50mA, 5.0VVIN8.0V IOUT =10mA, -20 TOPR85 100mA -60 100 1000 50 0.6 80 0.5 0.1 0 0.3 0.25 60
Load Stability (Note 4) Input-Output Voltage Differential Maximum Output Current(Note 4) Supply Current1 Supply Current2 EXT Leakage Current High CE Level Current Low Input Stability (Note 4) Output Voltage Temperature Characteristics (Note 4) UC62150 (VOUT(T) =5.0V) PARAMETER Output Voltage (Note2) Input Voltage EXT Output Voltage CE Level Voltage
-0.2
-0.05 0.1 100
TEST CONDITIONS IOUT =50mA, VIN =6.0V
MIN 4.900
TYP 5.000
MAX 5.100 8 8 0.25 60
1.5 VIN =6.0V, 1mA IOUT 100mA IOUT =100mA VIN =6.0V VIN=6.0V, VCE =Vss VIN=8.0V, VCE =VIN -60 100 1000
Load Stability (Note 4) Input-Output Voltage Differential Maximum Output Current(Note 4) Supply Current1 Supply Current2 EXT Leakage Current High CE Level Current Low
IOUT (max) Iss1 0.6 Iss2 50 80 ILEAK 0.5 ICEH VCE =VIN 0.1 VCE =Vss -0.2 -0.05 0 ICEL VOUT Input Stability (Note 4) IOUT=50mA, 6.0VVIN 8.0V 0.1 0.3 %/V VINxVOUT Output Voltage Temperature VOUT IOUT =10mA, -20 TOPR 85 100 ppm/ Characteristics (Note 4) TOPRxVOUT Note: 1. VOUT(T)=Specified Output Voltage. 2. VOUT(E) =Effective Output Voltage (i.e. the output voltage when "VOUT(T)+1.0V" is provided at the VIN pin while maintaining a certain IOUT value). 3. VDIFF = {VIN1 -VOUT1 } *VOUT1 = A voltage equal to 98% of the Output Voltage whenever an amply stabilized IOUT {VOUT(T)+1.0V} is input. *VIN1 = The Input Voltage when VOUT1 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 hFE equal to 100 or more.
UNIT V V V V V mV mV mA A A A A A
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TYPICAL APPLICATION CIRCUIT
PNP Tr RBE VIN + CIN (Tantalum) VIN CE Vss
CMOS IC
RB EXT VOUT + CL RL Peripherals: (Tantalum) PNP Tr: 2SA1213 RBE : 20K ~ 47K R B : Please refer to Note 2 on the directions for use . CIN :10 F(Tantalum) C L: 47F(Tantalum)10F minimum
OPERATIONAL EXPLANATION
Functional Description Output voltage (VOUT) 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 (VCE) and high hFE characteristics be used. 2. RB Resistor Although the IC unit is protected by a base current remitter circuit, it is recommended that a resistor (RB) 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 IOUT (max.) at VIN (min.). However, the larger the input current, the larger the output current (IOUT) that can be obtained. VIN(min) -1.2(V) RB 0.7(V) RBE IOUT(max) hFE
3. RBE Resistor, CL Capacitor To prevent oscillation due to output load variation, use of a phase compensation capacitor CL is recommended. Please use a Tantalum capacitor of at least 10F. Please also use an RBE resistor of less than 47k. An RBE resistor of between 20k and 47k 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 10F 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 RB or an overshoot current protection circuit is recommended. Care should also be taken with the transistor's power dissipation.
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TYPICAL CHARACTERISTICS
(1) OUTPUT VOLTAGE vs. OUTPUT CURRENT
CMOS IC
UC62130 3.1 TOPR = 25 , VIN = 4.0V C L=10 F (tantalum) 3.4
UC62133 TOPR= 25 , VIN =4.3V C L=10 F (tantalum)
Output Voltage, VOUT (V)
3.0
Output Voltage, VOUT (V)
0 100 200 300 500
3.3
2.9
3.2
2.8
3.1
2.7
400
3.0
0
100
200
300
400
500
Outpout Current , I OUT (mA)
UC62140 4.1 TOPR = 25 , VIN=5V C L =10 F (tantalum ) 5.1
Outpout Current , IOUT (mA)
UC62150 T OPR =25 , VIN = 6V C L=10F (tantalum)
4.0
Output Voltage, VOUT (V)
500
Output Voltage, VOUT (V)
5.0
3.9
4.9
3.8
4.8
3.7
0
100
200
300
400
4.7
0
100
200
300
400
500
Outpout Current, I OUT (mA)
Outpout Current, I OUT (mA)
(2) OUTPUT VOLTAGE vs. INPUT VOLTAGE
UC62130 3.10
Output Voltage, VOUT (V)
UC62130 3.2
Output Voltage, VOUT (V)
TOPR =25 ) C L=10F (tantalum IOUT =1 mA 100mA 500 mA
3.05 3.00 2.95 2.90 2.85
3.0 2.8 2.6 2.4 2.2 100 mA I OUT=1 mA
TOPR =25 C L =10F (tantalum )
500mA
3
4
5
6
2.5
Input Voltage, VIN (V)
3.0 Input Voltage, V IN (V)
3.5
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TYPICAL CHARACTERISTICS(Cont.)
UC 62133 3.40
Output Voltage, VOUT (V)
CMOS IC
UC62133 3.5
Output Voltage, VOUT (V)
TOPR =25 ) C L=10F (tantalum IOUT=1mA 100mA
3.35 3.30 3.25 3.20 3.15 3 4 5 Input Voltage, VIN (V) 6
3.3 3.1 2.9 2.7 2.5 100 mA IOUT=1 mA
TOPR =25 C L=10F (tantalum)
500 mA
500mA
2.8
3.3 Input Voltage, VIN (V)
3.8
UC62140 4.10 TOPR =25 CL=10F (tantalum ) 4.2
UC62140 TOPR =25 C L=10 F (tantalum ) IOUT =1mA 500mA
Output Vol tage, VOUT (V)
4.00 3.95 3.90 3.85
IOUT=1 mA 100mA 500mA
Output Voltage, V OUT (V)
4.05
4.0 3.8 3.6
100mA 3.4 3.2
4
5
6
7
3.5
4 Input Voltage, V IN (V)
4.5
Input Voltage, VIN (V)
UC62150 5.10 5.05 5.00 4.95 4.90 4.85 IOUT=1mA 500mA 100mA
Output Voltage, V OUT (V) Output Voltage, V OUT (V)
UC62150 5.2 5.0 IOUT=1mA 4.8 4.6 100mA 4.4 4.2 8 T OPR =25 C L =10F ( tantalum) 500mA
T OPR =25 ) C L=10F (tantalum 5 6 7 Input Voltage, VIN (V)
4.5
5 Input Voltage, V IN (V)
5.5
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TYPICAL CHARACTERISTICS(Cont.)
(3) INPUT/OUTPUT VOLTAGE DIFFERENTIAL vs. OUTPUT CURRENT
CMOS IC
UC62130 1.0
Input/Output Differential, VDIFF ( V ) Input/Output Differential, VDIFF (V)
UC62133 1.0 0.8 0.6 TOPR =25 0.4 0.2 -20 0.0 0 200 400 600 800 1000 85 CL=10F (tantalum)
C L=10F (tantalum)
0.8 0.6 TOPR =25 0.4 0.2 -20 0.0 0 200 400 600 800 1000 85
Output Current, I OUT (mA)
UC62140
Output Current, I OUT (mA)
UC62150 1.0
Input/Output Differential, VDIFF (V)
1.0 0.8 0.6
Input/Output Differential, VDIFF (V)
C L=10F (tantalum)
C L =10F(tantalum )
0.8 0.6 TOPR =25 0.4 0.2 -20 0.0 0 200 400 600 800 1000 85
TOPR =25 0.4 0.2 -20 0.0 0 200 400 600 800 1000 85
Output Current, I OUT (mA) (4) SUPPLY CURRENT vs. INPUT VOLTAGE
Output Current, I OUT (mA)
UC62130 50
Supply Current, Iss (A)
UC62133 50 40 30 20 10 0 T OPR =25 -20 85
Supply Current, Iss (A)
40 30 20 10 0 TOPR =25 -20 85
3
4
5
6
3
4
5
6
Input Voltage, VIN (V)
Input Voltage, VIN (V)
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TYPICAL CHARACTERISTICS(Cont.)
UC62140 50 50 UC62150
CMOS IC
SupplyCurrent, Iss (A)
Supply Current, Iss (A)
40 30 T OPR =25 20 10 0 -20
40 30 20 10 0 T OPR =25 - 20 85
85
4
5
6
7
5
6
7
8
Input Voltage, VIN (V)
Input Voltage, VIN (V)
(5) OUTPUT VOLTTAGE vs. AMBIENT TEMPERATURE
UC 62130 3.10 VIN=4.0V, IOUT=100mA C L =10F (tantalum) 3.40
UC62133 VIN= 4.3V, IOUT=100mA C L =10 F (tantalum)
Output Voltage, V OUT (V)
3.05
Output Voltage, VOUT (V)
60 80 100
3.35
3.00
3.30
2.95
3.25
2.90 -40 -20
0
20
40
3.20 -40
-20
0
20 40
60
80 100
Ambient Temperature, TOPR ( ) UC 62140 4.10 VIN= 5 V, IOUT=100mA C L =10F (tantalum) 5.10
Ambient Temperature, TOPR ( ) UC62150 VIN= 6 V, IOUT=100mA C L =10 F (tantalum)
Output Voltage, V OUT (V)
4.05
Output Voltage, VOUT (V)
60 80 100
5.05
4.00
5.00
3.95
4.95
3.90 -40 -20
0
20
40
4.90 -40
-20
0
20 40
60
80 100
Ambient Temperature, TOPR ( )
Ambient Temperature, TOPR ( )
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TYPICAL CHARACTERISTICS(Cont.)
(6) SUPPLY CURRENT vs. AMBIENT TEMPERATURE
CMOS IC
UC62130 50
SupplyCurrent, Iss (A)
UC62133 VIN=4.0V
Supply Current, Iss (A)
50 40 30 20 10 0
VIN=4.3V
40 30 20 10 0
-40 -20
0
20
40 60
80 100
-40 -20
0
20
40
60
80 100
Ambient Temperature, TOPR ( )
UC62140 50 V IN = 5V 50
Ambient Temperature, TOPR ( )
UC62150 VIN = 6V
Supply Current, Iss (A)
Supply Current, Iss (A)
40 30 20 10 0
40 30 20 10 0
-40 -20
0
20
40
60
80
Ambient Temperature, TOPR (7) INPUT TRANSIENT RESPONSE
UC62130 6 5
100 ()
-40 -20
0
20
40
60
80 100
Ambient Temperature T OPR ( ) ,
UC 62130 3.4 6 I OUT =100mA CL=10F (tantalum ) Input Voltage 4 3 Output Voltage 2 1 Time (0.4msec/div) 3.0 2.9 3.2 3.1 3.4 3.3
Output Voltage, V OUT (V)
Input Voltage, VI N (V)
Input Voltage 4 3 Output Voltage 2 1 Time (0.4msec /div) 3.0 2.9 3.2 3.1
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Input Voltage, V IN (V)
3.3
5
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Output Voltage, V OUT (V)
I OUT = 10 mA CL=10F (tantalum)
UC621XX
TYPICAL CHARACTERISTICS(Cont.)
UC62133 6
Input Voltage, VIN (V)
CMOS IC
UC62133 3.7
Output Voltage, V OUT (V) Input Voltage, V IN (V)
5 Input Voltage 4 3 Output Voltage 2 1 Time (0.4msec /div)
3.6 3.5 3.4 3.3 3.2
5 Input Voltage 4 3 Output Voltage 2 1 Time (0.4msec/div)
3.6 3.5 3.4 3.3 3.2
UC62140 7
Input Voltage, V IN (V)
UC62140 4.4
Output Voltage, V OUT (V)
Input Voltage
Input Voltage, V IN (V)
6 5 4
4.3 4.2 4.1
6 Input Voltage 5 4 Output Voltage 3 2 Time (0.4msec/div)
4.3 4.2 4.1 4.0 3.9
Output Voltage 3 2 Time (0.4msec/div)
4.0 3.9
UC62150 8
Input Voltage, V IN (V)
UC62150 5.4
Output Voltage, VOUT (V)
Input Voltage
Input Voltage, V I N (V)
7 6 5
5.3 5.2 5.1
7 6 5
Input Voltage
5.3 5.2 5.1
Output Voltage 4 3 Time (0.4 msec/div ) 5.0 4.9
Output Voltage 4 3 Time (0.4msec/div) 5.0 4.9
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Output Voltage, VOU T (V)
IOUT =10mA C L=10F (tantalum)
8
I OUT =100 mA CL=10F (tantalum)
5.4
Output Voltage, V OUT (V)
IOUT =10mA CL=10F (tantalum)
7
IOUT =100mA CL=10F (tantalum)
4.4
Output Voltage, V OUT (V)
I OUT =10mA CL=10F(tantalum)
6
I OUT =100mA C L=10F (tantalum)
3.7
UC621XX
TYPICAL CHARACTERISTICS(Cont.)
(8) LOAD TRANSIENT RESPONSE
UC 62130 3.10
Output Voltage, V OUT (V)
CMOS IC
UC62133 1000
Output Voltage, I OUT (mA)
VIN =4.0V, C L=10F (tantalum)
3.40
Output Voltage, V OUT (V)
VIN =4.3V, C L=10F (tantalum)
1000 800
Output Voltage, I OUT (mA)
3.05 3.00 2.95 300mA 2.90 2.85 1mA Time (10msec/div) Output Current Output Voltage
800 600 400 200 0
3.35 Output Voltage 3.30 3.25 300mA 3.20 3.15 1mA Time (10msec/div) Output Current
600 400 200 0
UC62140 4.10
Output Voltage, V OUT (V)
UC62150 1000
Output Voltage, VOUT ( V)
VIN=5V, CL=10F (tantalum)
5.10
Output Voltage, I OUT (mA)
VIN=6V, CL =10F ( tantalum ) Output Voltage
1000 800 600 400
4.00 3.95 300mA 3.90 3.85 1mA
Output Voltage
600 400
5.00 4.95 300 mA 4.90 4.85 1mA Time (10msec/div) Output Current
Output Current
200 0
200 0
Time (10 msec/div)
(9) RIPPLE REJECTION RATE
UC62130 60
Ripple Rejection Rate, RR (dB) Ripple Rejection Rate, RR (dB)
UC62133 60 50 40 30 20 10 0 1 10 VIN =4.3VDC+0.5VP-PAC IOUT = 200mA, C L=10 F (tantalum) 0.01 0.1 1 10
50 40 30 20 10 0 VIN =4.0VDC+0.5VP-PAC IOUT = 200mA, CL =10 F (tantalum) 0.1
0.01
Ripple Frequency f (kHz) ,
Ripple Frequency f (kHz) ,
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Output Voltage, IOUT (mA)
4.05
800
5.05
UC621XX
TYPICAL CHARACTERISTICS(Cont.)
UC62140 60
Ripple Rejection Rate, RR (dB)
CMOS IC
UC62150 60
Ripple Rejection Rate, RR (dB)
50 40 30 20 10 0 0.01 0.1 1 Ripple Frequency f (kHz) , 10 VIN = 5VDC+0.5VP-PAC IOUT =200mA, CL =10 F (tantalum)
50 40 30 20 10 0 VIN = 6VDC+0.5VP-PAC I OUT = 200mA, C L=10 F (tantalum) 0.01 0.1 1 Ripple Frequency f (kHz) , 10
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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