UNISONIC TECHNOLOGIES CO., LTD
UC621XX
CMOS IC
www.unisonic.com.tw
1of 14
Copyright 2005 Unisonic Technologies Co., Ltd
QW-R502-028,B
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.50A (V
OUT
= 5.0V)
: Typ.0.2A (Stand-by)
* Output Voltage Temperature Characteristics: Typ. 100ppm/
* Input Stability : Typ.0.1%/V
SOT-25
4
5
3
2
1
*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.
UC621xxL-AF5-R
(1)Packing Type
(2)Package Type
(4)Output Voltage Code
(3)Lead Plating
(1) R: Tape Reel
(2) AF5: SOT-25
(4) xx: refer to Marking Information
(3) L: Lead Free Plating, Blank: Pb/Sn
UC621XX
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
2 of 14
www.unisonic.com.tw
QW-R502-028,B
PIN CONFIGURATION
1
2
3
4
5
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
PACKAGE VOLTAGE
CODE
MARKING
SOT-25
3 0 : 3 . 0 V
3 3 : 3 . 3 V
4 0 : 4 . 0 V
5 0 : 5 . 0 V
5
4
3
VOLTAGE
CODE
2
1
6 2
UC621XX
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
3 of 14
www.unisonic.com.tw
QW-R502-028,B
BLOCK DIAGRAM
Voltage
Reference
+
-
Current
Limit
V
DD
EXT
CE
V
OUT
Vss
UC621XX
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
4 of 14
www.unisonic.com.tw
QW-R502-028,B
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.)
UC62130
( V
OUT(T)
=3.0V)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
Output Voltage (Note2)
V
OUT(E)
I
OUT
=50mA, V
IN
=4.0V 2.940
3.000
3.060
V
Input Voltage
V
IN
8
V
EXT Output Voltage
V
EXT
8
V
High V
CEH
1.5
V
CE Level Voltage
Low V
CEL
0.25
V
Load Stability (Note 4)
V
OUT
V
IN
=4.0V, 1mAI
OUT
100mA -60 60
mV
Input-Output Voltage Differential
V
DIFF
I
OUT
=100mA
100
mV
Maximum Output Current(Note 4)
I
OUT (max)
V
IN
=4.0V
1000
mA
Supply Current1
Iss1
V
IN
=4.0V, V
CE
=Vss
0.6
A
Supply Current2
Iss2
V
IN
=8.0V, V
CE
=V
IN
50
80
A
EXT Leakage Current
I
LEAK
0.5
A
High I
CEH
V
CE
=V
IN
0.1
A
CE Level Current
Low I
CEL
V
CE
=Vss -0.2
-0.05
0
A
Input Stability (Note 4)
V
OUT
V
IN
V
OUT
I
OUT
=50mA, 4.0VV
IN
8.0V
0.1 0.3 %/V
Output Voltage Temperature
Characteristics (Note 4)
V
OUT
T
OPR
V
OUT
I
OUT
=10mA, -20T
OPR
85
100 ppm/
UC62133
(V
OUT(T)
=3.3V)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
Output Voltage (Note2)
V
OUT(E)
I
OUT
=50mA, V
IN
=4.3V 3.234
3.300
3.366
V
Input Voltage
V
IN
8
V
EXT Output Voltage
V
EXT
8
V
High V
CEH
1.5
V
CE Level Voltage
Low V
CEL
0.25
V
Load Stability (Note 4)
V
OUT
V
IN
=4.3V, 1mAI
OUT
100mA
-60 60
mV
Input-Output Voltage Differential
V
DIFF
I
OUT
=100mA
100
mV
Maximum Output Current (Note 4)
I
OUT (max)
V
IN
=4.3V
1000
mA
Supply Current1
Iss1
V
IN
=4.3V, V
CE
=Vss
0.6
A
Supply Current2
Iss2
V
IN
=8.0V, V
CE
=V
IN
50
80
A
EXT Leakage Current
I
LEAK
0.5
A
High I
CEH
V
CE
=V
IN
0.1
A
CE Level Current
Low I
CEL
V
CE
=Vss -0.2
-0.05
0
A
Input Stability (Note 4)
V
OUT
V
IN
V
OUT
I
OUT
=50mA, 4.3VV
IN
8.0V
0.1 0.3 %/V
Output Voltage Temperature
Characteristics (Note 4)
V
OUT
T
OPR
V
OUT
I
OUT
=10mA, -20T
OPR
85
100
ppm/
UC621XX
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
5 of 14
www.unisonic.com.tw
QW-R502-028,B
ELECTRICAL CHARACTERISTICS(Cont.)
UC62140
(V
OUT(T)
=4.0V)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
Output Voltage (Note2)
V
OUT(E)
I
OUT
=50mA, V
IN
=5.0V 3.92
4.000
4.08
V
Input Voltage
V
IN
8
V
EXT Output Voltage
V
EXT
8
V
High V
CEH
1.5
V
CE Level Voltage
Low V
CEL
0.25
V
Load Stability (Note 4)
V
OUT
V
IN
=5.0V, 1mAI
OUT
100mA
-60 60
mV
Input-Output Voltage Differential
V
DIFF
I
OUT
=100mA
100
mV
Maximum Output Current(Note 4)
I
OUT (max)
V
IN
=5.0V
1000
mA
Supply Current1
Iss1
V
IN
=5.0V, V
CE
=Vss
0.6
A
Supply Current2
Iss2
V
IN
=8.0V, V
CE
=V
IN
50
80
A
EXT Leakage Current
I
LEAK
0.5
A
High I
CEH
V
CE
=V
IN
0.1
A
CE Level Current
Low I
CEL
V
CE
=Vss -0.2
-0.05
0
A
Input Stability (Note 4)
V
OUT
V
IN
V
OUT
I
OUT
=50mA, 5.0VV
IN
8.0V
0.1 0.3 %/V
Output Voltage Temperature
Characteristics (Note 4)
V
OUT
T
OPR
V
OUT
I
OUT
=10mA, -20T
OPR
85
100
ppm/
UC62150
(V
OUT(T)
=5.0V)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
Output Voltage (Note2)
V
OUT(E)
I
OUT
=50mA, V
IN
=6.0V 4.900
5.000
5.100
V
Input Voltage
V
IN
8 V
EXT Output Voltage
V
EXT
8
V
High V
CEH
1.5
V
CE Level Voltage
Low V
CEL
0.25
V
Load Stability (Note 4)
V
OUT
V
IN
=6.0V, 1mA I
OUT
100mA -60 60 mV
Input-Output Voltage Differential
V
DIFF
I
OUT
=100mA
100
mV
Maximum Output Current(Note 4)
I
OUT (max)
V
IN
=6.0V
1000
mA
Supply Current1
Iss1
V
IN
=6.0V, V
CE
=Vss
0.6
A
Supply Current2
Iss2
V
IN
=8.0V, V
CE
=V
IN
50
80
A
EXT Leakage Current
I
LEAK
0.5
A
High I
CEH
V
CE
=V
IN
0.1
A
CE Level Current
Low I
CEL
V
CE
=V
ss
-0.2
-0.05
0
A
Input Stability (Note 4)
V
OUT
V
IN
V
OUT
I
OUT
=50mA, 6.0VV
IN
8.0V
0.1 0.3 %/V
Output Voltage Temperature
Characteristics (Note 4)
V
OUT
T
OPR
V
OUT
I
OUT
=10mA, -20T
OPR
85
100 ppm/
Note: 1. V
OUT(T)
=Specified Output Voltage.
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.
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