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.
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.
APPLICATIONS
*Voltage regulator for LAN Card, CD-ROM, and DVD
*Wireless communication systems
PIN DESCRIPTION
NAME FUNCTION
VOUT Output
GND Ground/Adjustable
VIN Positive Power Input
Function Block Diagram
SOT-23 : 1: V
SOT-25 : 1: V
2
1
3
SOT-23
1
2
3
5
4
SOT-25
2: GND 3: V
OUT
GND 3: NC 4: NC 5: V
IN 2:
IN
OUT
UTC UNISONIC TECHNOLOGIES CO., LTD. 1
QW-R102-007,E
UTC UR132 LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
Input Voltage Vin -0.3 12 V
Operating Junction Temperature Range -40 125
Storage Temperature Range -65 150
Power Dissipation 0.3 W
UTC UR132- Vo<3.3V (Vo±2%)
ELECTRICAL CHARACTERISTICS
Output Voltage IL=2mA, VIN-VOUT=2V
Output Voltage Temperature
Coefficient
Line Regulation IL=2mA, VIN-Vout=2V~Vin=9V 0.5 %VOUT
Load Regulation (note 2) IL=2mA~200mA, VIN-Vout =2V 10 30 mV
Current Limit (note 3) VIN-Vout=2V, VOUT=0V 300 mA
Dropout Voltage (note 4,5) 1.5 V
Standby current IL=0, VIN=9V 3.0 mA
UTC UR132- ADJ / Vo≧3.3V (Vo±2%)
ELECTRICAL CHARACTERISTICS
Output Voltage IL=2mA, VIN-VOUT=2V
Adjustable (R1=120Ω,R2=200Ω,Vout=3.3V)
Reference Voltage Vin-Vo=2V, IL=2mA 1.238 1.250 1.262 V
Output Voltage Temperature
Coefficient
Line Regulation IL=2mA, VIN-Vout=2V~Vin=12V 0.5 %VOUT
Load Regulation (note 2) I
Current Limit (note 3) VIN-Vout=2V, VOUT=0V 300 mA
Dropout Voltage (note 4,5) 1.3 V
Standby current IL=0, VIN=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
inside target value±2%.
Note 5: Dropout test is skipped at the condition of V
PARAMETER MIN. TYP. MAX. UNIT
°C
°C
(Ta=25°C, CIN=1µF, COUT=10µF, unless otherwise specified)
PARAMETER TEST CONDITIONS MIN TYP. MAX UNITS
50 150
(Ta=25°C, CIN=1µF, COUT=10µF, unless otherwise specified)
PARAMETER TEST CONDITIONS MIN TYP. MAX UNITS
50 150
=2mA~200mA, VIN-Vout =2V 10 30 mV
L
IN<3V.
Vo×0.98
Vo×0.98
Vo
Vo
Vo×1.02
Vo×1.02
V
PPM/°C
V
PPM/°C
OUT
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 VOUT 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 VIN to GND.
UR132 ADJUSTABLE
VIN VOUT
+
1uF
I
ADJ
UTC
UR132
R2
ADJ
VREF
Cr
+
R1
10uF
VOUTVIN
+
uF
10
Cr:10uF to improve ripple rejection
V
OUT=VREF(1+R2/R1)+IADJ*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, ev en 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, dev ices 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
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