UTC UR132
LINEAR INTEGRATED CIRCUIT
200mA LOW DROPOUT LINEAR
VOLTAGE REGULATOR
DESCRIPTION
The UTC UR132 is a 200mA fixed output voltage
low dropout linear regulator. Wide range of available
output voltage fits most of applications. Built-in output
current-limiting most thermal-limiting provide maximal
protection against any fault conditions.
1
2
3
SOT-23
FEATURES
*Guaranteed 200mA output current
*Input voltage range up to 12V
*Extremely tight load regulation
*Fast transient response
*Current-limiting and Thermal-limiting
*Three-terminal adjustable or fixed voltage.
3
2
1
4
5
SOT-25
APPLICATIONS
*Voltage regulator for LAN Card, CD-ROM, and DVD
*Wireless communication systems
SOT-23 :
SOT-25 :
1: V
OUT
2: GND 3: V
IN
1: V
IN
2
:
GND 3: NC 4: NC
5: V
OUT
PIN DESCRIPTION
NAME
VOUT
GND
VIN
FUNCTION
Output
Ground/Adjustable
Positive Power Input
Function Block Diagram
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-007,E
UTC UR132
PARAMETER
LINEAR INTEGRATED CIRCUIT
MIN.
-0.3
-40
-65
ABSOLUTE MAXIMUM RATINGS
TYP.
MAX.
12
125
150
0.3
UNIT
V
°C
°C
W
Input Voltage Vin
Operating Junction Temperature Range
Storage Temperature Range
Power Dissipation
UTC UR132- Vo<3.3V (Vo±2%)
ELECTRICAL CHARACTERISTICS
(Ta=25°C, C
IN
=1µF, C
OUT
=10µF, unless otherwise specified)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
(note 2)
Current Limit (note 3)
Dropout Voltage (note 4,5)
Standby current
TEST CONDITIONS
I
L
=2mA, V
IN-
V
OUT
=2V
MIN
Vo×0.98
TYP.
Vo
50
10
MAX
Vo×1.02
150
0.5
30
1.5
UNITS
V
PPM/°C
%V
OUT
mV
mA
V
mA
I
L
=2mA, V
IN-
Vout=2V~Vin=9V
I
L
=2mA~200mA, V
IN-
Vout =2V
V
IN-Vout
=2V, V
OUT
=0V
I
L
=0, V
IN
=9V
300
3.0
UTC UR132- ADJ / Vo≧3.3V (Vo±2%)
ELECTRICAL CHARACTERISTICS
(Ta=25°C, C
IN
=1µF, C
OUT
=10µF, unless otherwise specified)
PARAMETER
TEST CONDITIONS
MIN
TYP.
MAX
UNITS
Output Voltage
I
L
=2mA, V
IN-
V
OUT
=2V
Vo
V
Vo×0.98
Vo×1.02
Adjustable (R1=120Ω,R2=200Ω,Vout=3.3V)
Reference Voltage
Vin-Vo=2V, I
L
=2mA
1.238
1.250
1.262
V
Output Voltage Temperature
50
150
PPM/°C
Coefficient
Line Regulation
I
L
=2mA, V
IN-
Vout=2V~Vin=12V
0.5
%V
OUT
Load Regulation
(note 2)
I
L
=2mA~200mA, V
IN-
Vout =2V
10
30
mV
Current Limit (note 3)
V
IN-Vout
=2V, V
OUT
=0V
300
mA
Dropout Voltage (note 4,5)
1.3
V
Standby current
I
L
=0, V
IN
=12V
5.0
mA
Note 1: Guaranteed by design.
Note 2: Regulation is measured at constant junction temperature, using pulsed ON time.
Note 3: Current Limit is measured at constant junction temperature, using pulsed ON time.
Note 4: Dropout is measured at constant junction temperature, using pulsed ON time, and the criterion is V
OUT
inside target value±2%.
Note 5: Dropout test is skipped at the condition of V
IN
<3V.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R102-007,E
UTC UR132
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
UTC
UR132
APPLICATION INFORMATION
A 10µF (or larger) capacitor is recommended between V
OUT
and GND for stability. The part may oscillate
without the capacitor. Any type of capacitor can be used, but not Aluminum electrolytics when operating below -25°C.
The capacitance may be increased without limit.
A 1µF capacitor (or larger) should be placed between V
IN
to GND.
UR132 ADJUSTABLE
V
IN
V
IN
UTC
UR132
V
OUT
V
OUT
+
1
uF
I
ADJ
R2
Cr
ADJ V
REF
R1
+
10
uF
+
10
uF
Cr:10uF to improve ripple rejection
V
OUT
=V
REF
(1+R2/R1)+I
ADJ
*R2
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R102-007,E
UTC UR132
LINEAR INTEGRATED CIRCUIT
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.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R102-007,E
Embedded System
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