UNISONIC TECHNOLOGIES CO., LTD
UC621XX
CMOS IC
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
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.50µA (VOUT = 5.0V)
: Typ.0.2µA (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
(1) R: Tape Reel
(2)Package Type
(2) AF5: SOT-25
(3)Lead Plating
(3) L: Lead Free Plating, Blank: Pb/Sn
(4)Output Voltage Code
(4) xx: refer to Marking Information
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Copyright © 2005 Unisonic Technologies Co., Ltd
1of 14
QW-R502-028,B
UC621XX
CMOS IC
PIN CONFIGURATION
VOUT VIN
3
PIN NO.
1
2
3
4
5
PIN NAME
VSS
VIN
VOUT
EXT
CE
2
VSS
1
4
5
EXT
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
SOT-25
30:3.0V
33:3.3V
40:4.0V
50:5.0V
MARKING
3
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1
6 2
4
UNISONIC TECHNOLOGIES CO., LTD
2
VOLTAGE
CODE
5
2 of 14
QW-R502-028,B
UC621XX
CMOS IC
BLOCK DIAGRAM
VDD
VOUT
EXT
Current
Limit
CE
+
Voltage
Reference
Vss
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3 of 14
QW-R502-028,B
UC621XX
CMOS IC
ABSOLUTE MAXIMUM RATINGS (Ta=25℃)
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
SYMBOL
VOUT(E)
VIN
VEXT
High
VCEH
CE Level Voltage
Low
VCEL
△VOUT
Load Stability (Note 4)
Input-Output Voltage Differential
VDIFF
Maximum Output Current(Note 4)
IOUT (max)
Supply Current1
Iss1
Supply Current2
Iss2
EXT Leakage Current
ILEAK
High
ICEH
CE Level Current
Low
ICEL
△VOUT
Input Stability (Note 4)
△VIN×VOUT
△VOUT
Output Voltage Temperature
△T
Characteristics (Note 4)
OPR×VOUT
TEST CONDITIONS
IOUT =50mA, VIN=4.0V
MIN
2.940
TYP
3.000
MAX
3.060
8
UNIT
V
V
8
-0.05
0.6
80
0.5
0.1
0
V
V
V
mV
mV
mA
µA
µA
µA
µA
µA
0.1
0.3
%/V
EXT Output Voltage
UC62133(VOUT(T)=3.3V)
PARAMETER
Output Voltage (Note2)
Input Voltage
SYMBOL
VOUT(E)
VIN
VEXT
VCEH
CE Level Voltage
VCEL
△V
Load Stability (Note 4)
OUT
Input-Output Voltage Differential
VDIFF
Maximum Output Current (Note 4)
IOUT (max)
Supply Current1
Iss1
Supply Current2
Iss2
EXT Leakage Current
ILEAK
High
ICEH
CE Level Current
Low
ICEL
△VOUT
Input Stability (Note 4)
△VIN×VOUT
△VOUT
Output Voltage Temperature
△TOPR×VOUT
Characteristics (Note 4)
1.5
VIN =4.0V, 1mA≤IOUT≤100mA
IOUT =100mA
VIN=4.0V
VIN =4.0V, VCE =Vss
VIN =8.0V, VCE =VIN
VCE =VIN
VCE =Vss
100
1000
50
-0.2
IOUT =50mA, 4.0V≤VIN≤8.0V
IOUT =10mA, -20℃≤TOPR≤85℃
TEST CONDITIONS
IOUT =50mA, VIN =4.3V
0.25
60
-60
±100
MIN
3.234
TYP
3.300
MAX
3.366
8
UNIT
V
V
8
-0.05
0.6
80
0.5
0.1
0
V
V
V
mV
mV
mA
µA
µA
µA
µA
µA
0.1
0.3
%/V
EXT Output Voltage
High
Low
1.5
VIN =4.3V, 1mA≤IOUT≤100mA
IOUT =100mA
VIN =4.3V
VIN =4.3V, VCE =Vss
VIN =8.0V, VCE =VIN
VCE =VIN
VCE =Vss
IOUT =50mA, 4.3V≤VIN≤8.0V
IOUT =10mA, -20℃≤TOPR≤85℃
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ppm/℃
0.25
60
-60
100
1000
50
-0.2
±100
ppm/℃
4 of 14
QW-R502-028,B
UC621XX
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
UC62140 (VOUT(T)=4.0V)
PARAMETER
Output Voltage (Note2)
Input Voltage
SYMBOL
VOUT(E)
VIN
VEXT
VCEH
CE Level Voltage
VCEL
△VOUT
Load Stability (Note 4)
Input-Output Voltage Differential
VDIFF
Maximum Output Current(Note 4)
IOUT (max)
Supply Current1
Iss1
Supply Current2
Iss2
EXT Leakage Current
ILEAK
High
ICEH
CE Level Current
Low
ICEL
△VOUT
Input Stability (Note 4)
△VIN×VOUT
△VOUT
Output Voltage Temperature
△TOPR×VOUT
Characteristics (Note 4)
TEST CONDITIONS
IOUT =50mA, VIN =5.0V
MIN
3.92
TYP
4.000
MAX
4.08
8
UNIT
V
V
8
-0.05
0.6
80
0.5
0.1
0
V
V
V
mV
mV
mA
µA
µA
µA
µA
µA
0.1
0.3
%/V
EXT Output Voltage
High
Low
UC62150 (VOUT(T) =5.0V)
PARAMETER
Output Voltage (Note2)
Input Voltage
SYMBOL
VOUT(E)
VIN
1.5
VIN =5.0V, 1mA≤IOUT≤100mA
IOUT =100mA
VIN =5.0V
VIN =5.0V, VCE =Vss
VIN =8.0V, VCE =VIN
VCE =VIN
VCE =Vss
100
1000
50
-0.2
IOUT =50mA, 5.0V≤VIN≤8.0V
±100
IOUT =10mA, -20℃≤TOPR≤85℃
TEST CONDITIONS
IOUT =50mA, VIN =6.0V
EXT Output Voltage
0.25
60
-60
MIN
4.900
TYP
5.000
ppm/℃
MAX
5.100
8
8
UNIT
V
V
V
V
V
mV
mV
mA
µA
µA
µA
µA
µA
VEXT
VCEH
1.5
CE Level Voltage
0.25
VCEL
Load Stability (Note 4)
△VOUT
VIN =6.0V, 1mA ≤ IOUT ≤100mA
-60
60
Input-Output Voltage Differential
VDIFF
IOUT =100mA
100
Maximum Output Current(Note 4)
IOUT (max)
VIN =6.0V
1000
Supply Current1
Iss1
VIN=6.0V, VCE =Vss
0.6
Supply Current2
Iss2
VIN=8.0V, VCE =VIN
50
80
EXT Leakage Current
ILEAK
0.5
High
ICEH
VCE =VIN
0.1
CE Level Current
VCE =Vss
-0.2
-0.05
0
Low
ICEL
△VOUT
Input Stability (Note 4)
IOUT=50mA, 6.0V≤VIN ≤8.0V
0.1
0.3
%/V
△VIN×VOUT
Output Voltage Temperature
△VOUT
IOUT =10mA, -20℃≤TOPR ≤85℃
±100
ppm/℃
Characteristics (Note 4)
△TOPR×VOUT
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.
High
Low
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5 of 14
QW-R502-028,B
UC621XX
CMOS IC
TYPICAL APPLICATION CIRCUIT
PNP Tr
RBE
VIN
+
CIN
(Tantalum)
RB
+
EXT
VOUT
VIN
CE
Vss
CL
RL Peripherals:
(Tantalum)
PNP Tr: 2SA1213
RBE : 20KΩ~ 47KΩ
R B : Please refer to Note 2 on the directions. for use
CIN :10 µF(Tantalum)
C L: 47µF(Tantalum)10µF 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 10µF. Please also use an RBE resistor of less than 47kΩ.
An RBE resistor of between 20kΩ and 47kΩ 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 RB or an overshoot current protection circuit is recommended. Care should
also be taken with the transistor's power dissipation.
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6 of 14
QW-R502-028,B
UC621XX
CMOS IC
TYPICAL CHARACTERISTICS
(1) OUTPUT VOLTAGE vs. OUTPUT CURRENT
UC62130
3.4
TOPR = 25℃, VIN = 4.0V
C L=10 µF (tantalum)
Output Voltage, VOUT (V)
Output Voltage, VOUT (V)
3.1
UC62133
3.0
2.9
2.8
2.7
0
100
200
300
3.3
3.2
3.1
3.0
500
400
TOPR = 25℃, VIN =4.3V
C L=10 µF (tantalum)
0
100
Outpout Current , I OUT (mA)
200
Output Voltage, VOUT (V)
Output Voltage, VOUT (V)
5.1
TOPR = 25℃, VIN=5V
C L =10 µF (tantalum)
3.9
3.8
0
100
200
500
UC62150
4.0
3.7
400
Outpout Current , IOUT (mA)
UC62140
4.1
300
300
400
5.0
4.9
4.8
4.7
500
T OPR =25℃ , VIN = 6V
C L=10µF (tantalum)
0
Outpout Current, I OUT (mA)
100
200
300
500
400
Outpout Current, I OUT (mA)
(2) OUTPUT VOLTAGE vs. INPUT VOLTAGE
UC62130
UC62130
3.05
IOUT =1 mA 100mA
3.00
500 mA
2.95
2.90
2.85
3.2
TOPR =25℃
C L=10µF (tantalum)
Output Voltage, VOUT (V)
Output Voltage, VOUT (V)
3.10
3
4
5
6
Input Voltage, VIN (V)
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TOPR =25℃
C L =10µF (tantalum)
3.0
2.8
I OUT=1mA
500mA
2.6
100 mA
2.4
2.2
2.5
3.0
Input Voltage, V IN (V)
3.5
7 of 14
QW-R502-028,B
UC621XX
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
UC62133
UC 62133
3.5
TOPR =25℃
C L=10µF (tantalum)
3.35
IOUT=1mA
3.30
Output Voltage, VOUT (V)
Output Voltage, V OUT (V)
3.40
100mA
500 mA
3.25
3.20
3.15
3
4
5
Input Voltage, VIN (V)
3.3
IOUT=1mA
3.1
500mA
2.9
100 mA
2.7
2.5
6
TOPR =25℃
C L=10µF (tantalum)
3.3
2.8
UC62140
UC62140
4.2
TOPR =25℃
CL=10µF (tantalum)
4.05
4.00
Output Voltage, V OUT (V)
Output Vol tage, V OUT (V)
4.10
IOUT=1mA
100mA 500mA
3.95
3.90
3.85
4
5
6
4.0
IOUT=1mA
3.8
500mA
3.6
100mA
3.4
3.2
7
TOPR =25℃
C L=10 µF (tantalum)
3.5
Input Voltage, VIN (V)
Input Voltage, V IN (V)
UC62150
5.2
IOUT=1mA
500mA
100mA
4.95
4.90
4.85
Output Voltage, V OUT (V)
Output Voltage, V OUT (V)
5.10
5.00
T OPR =25℃
C L=10µF (tantalum)
5
6
7
Input Voltage, VIN (V)
T OPR =25 ℃
C L =10µF ( tantalum)
5.0
IOUT=1mA
4.8
500mA
4.6
100mA
4.4
4.2
8
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4.5
4
UC62150
5.05
3.8
Input Voltage, VIN (V)
4.5
5
Input Voltage, V IN (V)
5.5
8 of 14
QW-R502-028,B
UC621XX
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
(3) INPUT/OUTPUT VOLTAGE DIFFERENTIAL vs. OUTPUT CURRENT
UC62133
UC62130
C L=10µF (tantalum)
0.8
0.6
TOPR =25℃
85℃
0.4
0.2
-20℃
0.0
0
200
400
1.0
Input/Output Differential, VDIFF (V)
Input/Output Differential, VDIFF ( V )
1.0
0.8
0.6
TOPR =25℃
0.2
-20℃
0
200
400
UC62150
C L=10µF (tantalum)
0.8
0.6
TOPR =25℃
85℃
0.2
-20℃
0.0
0
400
200
600
1.0
Input/Output Differential, VDIFF (V)
Input/Output Differential, VDIFF (V)
UC62140
0.4
1000
800
600
Output Current, I OUT (mA)
Output Current, I OUT (mA)
1.0
85℃
0.4
0.0
800 1000
600
CL=10µF (tantalum)
0.8
0.6
TOPR =25℃
0.4
85℃
0.2
-20℃
0.0
800 1000
C L =10µF(tantalum)
0
200
400
600
800 1000
Output Current, I OUT (mA)
Output Current, I OUT (mA)
(4) SUPPLY CURRENT vs. INPUT VOLTAGE
UC62133
50
50
40
40
30
TOPR =25℃
Supply Current, Iss (µA)
Supply Current, Iss (µA)
UC62130
85℃
-20℃
20
10
0
30
T OPR =25℃
85℃
-20℃
20
10
3
4
5
6
Input Voltage, VIN (V)
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0
3
4
5
6
Input Voltage, VIN (V)
9 of 14
QW-R502-028,B
UC621XX
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
UC62150
50
50
40
40
30
Supply Current, Iss (µA)
SupplyCurrent, Iss (µA)
UC62140
T OPR =25℃ 85℃
-20℃
20
10
0
4
5
6
85℃
- 20℃
20
10
0
7
T OPR =25℃
30
5
6
8
7
Input Voltage, VIN (V)
Input Voltage, VIN (V)
(5) OUTPUT VOLTTAGE vs. AMBIENT TEMPERATURE
UC 62130
3.40
VIN=4.0V, IOUT=100mA
C L =10µF (tantalum)
Output Voltage, V OUT (V)
Output Voltage, V OUT (V)
3.10
UC62133
3.05
3.00
2.95
2.90
-40 -20
0
20
40
60
3.35
3.30
3.25
3.20
-40
80 100
VIN= 4.3V, IOUT=100mA
C L =10 µF (tantalum)
Ambient Temperature, TOPR (℃)
-20
0
5.10
Output Voltage, V OUT (V)
Output Voltage, V OUT (V)
4.05
4.00
3.95
0
20
40
80 100
UC62150
VIN= 5 V, IOUT=100mA
C L =10µF (tantalum)
3.90
-40 -20
60
Ambient Temperature, TOPR (℃)
UC 62140
4.10
20 40
60
80 100
Ambient Temperature, TOPR (℃)
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VIN= 6 V, IOUT=100mA
C L =10 µF (tantalum)
5.05
5.00
4.95
4.90
-40
-20
0
20 40
60
80 100
Ambient Temperature, TOPR (℃)
10 of 14
QW-R502-028,B
UC621XX
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
(6) SUPPLY CURRENT vs. AMBIENT TEMPERATURE
UC62130
UC62133
50
VIN=4.0V
40
30
20
30
20
10
0
VIN=4.3V
40
Supply Current, Iss (µA)
SupplyCurrent, Iss (µA)
50
10
-40 -20
0
20
40 60
0
80 100
Ambient Temperature, TOPR (℃)
-40 -20
0
80 100
UC62150
50
50
V IN = 5V
40
Supply Current, Iss (µA)
Supply Current, Iss (µA)
60
40
Ambient Temperature, TOPR (℃)
UC62140
30
20
10
0
20
VIN = 6V
40
30
20
10
0
-40 -20
0
20
40
60
80
Ambient Temperature, TOPR
100
(℃)
-40 -20
0
20
40
60
80 100
Ambient Temperature, T OPR (℃)
(7) INPUT TRANSIENT RESPONSE
UC 62130
3.3
Input Voltage, VI N (V)
5
Input Voltage
4
3.2
3.1
3
6
3.4
Output Voltage
2
3.0
1
2.9
Time (0.4msec /div)
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Input Voltage, V IN (V)
I OUT = 10 mA
CL=10µF (tantalum)
Output Voltage, V OUT (V)
6
I OUT =100mA
CL=10µF (tantalum)
3.4
3.3
5
Input Voltage
4
3.2
3
3.1
Output Voltage
2
3.0
1
2.9
Output Voltage, V OUT (V)
UC62130
Time (0.4msec/div)
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QW-R502-028,B
UC621XX
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
UC62133
3.6
Input Voltage
3.5
3.4
3
Output Voltage
3.3
2
1
Input Voltage
4
3.5
3
3.4
Output Voltage
4.2
4
4.1
Output Voltage
3.9
2
7
IOUT =100mA
CL=10µF (tantalum)
Input Voltage
5
4.2
4
4.1
Output Voltage
4.0
3
3.9
2
Time (0.4msec/div)
UC62150
UC62150
IOUT =10mA
C L=10µF (tantalum)
Input Voltage
6
5.4
5.3
5.2
5.1
5
Output Voltage
5.0
4
3
8
4.9
Time (0.4 msec/div)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4.4
4.3
6
Time (0.4msec/div)
Input Voltage, V I N (V)
8
4.0
7
Input Voltage, V IN (V)
4.3
5
3
Input Voltage, V IN (V)
4.4
Output Voltage, V OUT (V)
Input Voltage
UC62140
Output Voltage, VOUT (V)
Input Voltage, V IN (V)
6
3.2
Time (0.4msec/div)
UC62140
IOUT =10mA
CL=10µF (tantalum)
3.3
1
Time (0.4msec /div)
7
3.6
5
2
3.2
3.7
7
Output Voltage, V OUT (V)
4
I OUT =100mA
C L=10µF (tantalum)
I OUT =100 mA
CL=10µF (tantalum)
Input Voltage
6
5.4
5.3
5.2
5.1
5
Output Voltage
5.0
4
3
Output Voltage, VOU T (V)
5
6
3.7
Input Voltage, V IN (V)
I OUT =10mA
CL=10µF(tantalum)
Output Voltage, V OUT (V)
Input Voltage, VIN (V)
6
Output Voltage, V OUT (V)
UC62133
4.9
Time (0.4msec/div)
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UC621XX
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
(8) LOAD TRANSIENT RESPONSE
UC 62130
800
Output Voltage
3.00
600
400
2.95
300mA
Output Current
2.90
1mA
2.85
200
0
VIN =4.3V, C L=10µF (tantalum)
800
3.35
Output Voltage
3.30
600
3.25
400
300mA
Output Current
3.20
UC62150
600
400
3.95
300mA
3.90
Output Current
1mA
3.85
200
0
Output Voltage, VOUT ( V)
Output Voltage
Output Voltage, I OUT (mA)
Output Voltage, V OUT (V)
4.00
5.10
1000
800
4.05
0
Time (10msec/div)
UC62140
VIN=5V, CL=10µF (tantalum)
200
1mA
3.15
Time (10msec/div)
4.10
1000
VIN=6V, CL=10µF ( tantalum)
800
Output Voltage
5.05
1000
5.00
600
4.95
400
300mA
4.90
Output Current
200
1mA
4.85
Output Voltage, IOUT (mA)
3.05
3.40
Output Voltage, I OUT (mA)
1000
Output Voltage, V OUT (V)
VIN =4.0V, C L=10µF (tantalum)
Output Voltage, I OUT (mA)
Output Voltage, V OUT (V)
3.10
UC62133
0
Time (10msec/div)
Time (10 msec/div)
(9) RIPPLE REJECTION RATE
UC62130
UC62133
60
Ripple Rejection Rate, RR (dB)
Ripple Rejection Rate, RR (dB)
60
50
40
30
20
10
0
VIN =4.0VDC+0.5VP-PAC
IOUT = 200mA,
CL =10μF (tantalum)
0.01
0.1
50
40
30
20
10
0
1
10
Ripple Frequency, f (kHz)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
VIN =4.3VDC+0.5VP-PAC
IOUT = 200mA,
C L=10μF (tantalum)
0.01
0.1
1
10
Ripple Frequency, f (kHz)
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UC621XX
CMOS IC
TYPICAL CHARACTERISTICS(Cont.)
UC62140
UC62150
60
Ripple Rejection Rate, RR (dB)
Ripple Rejection Rate, RR (dB)
60
50
40
30
20
10
VIN = 5VDC+0.5VP-PAC
IOUT =200mA,
CL =10μF (tantalum)
0
50
40
30
20
10
0
0.01
0.1
1
Ripple Frequency, f (kHz)
10
VIN = 6VDC+0.5VP-PAC
I OUT = 200mA,
C L=10μF (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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-028,B