UTC UR132
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-007,E
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
SOT-23
1
2
3
1
SOT-25
2
3
4
5
SOT-23 : 1: V
OUT
2: GND 3: V
IN
SOT-25 : 1: V
IN
2
:
GND 3: NC 4: NC 5: V
OUT
PIN DESCRIPTION
NAME FUNCTION
VOUT Output
GND Ground/Adjustable
VIN
Positive Power Input
Function Block Diagram
UTC UR132
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R102-007,E
ABSOLUTE MAXIMUM RATINGS
PARAMETER MIN.
TYP.
MAX.
UNIT
Input Voltage Vin
-0.3
12
V
Operating Junction Temperature Range
-40
125
C
Storage Temperature Range
-65
150
C
Power Dissipation
0.3
W
UTC UR132- Vo<3.3V (Vo2%)
ELECTRICAL CHARACTERISTICS
(Ta=25
C, C
IN
=1
F, C
OUT
=10
F, unless otherwise specified)
PARAMETER TEST
CONDITIONS
MIN
TYP.
MAX
UNITS
Output Voltage
I
L
=2mA, V
IN-
V
OUT
=2V
Vo0.98
Vo
Vo1.02
V
Output Voltage Temperature
Coefficient
50
150
PPM/
C
Line Regulation
I
L
=2mA, V
IN-
Vout=2V~Vin=9V
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)
1.5
V
Standby current
I
L
=0, V
IN
=9V
3.0
mA
UTC UR132- ADJ / Vo3.3V (Vo2%)
ELECTRICAL CHARACTERISTICS
(Ta=25
C, C
IN
=1
F, C
OUT
=10
F, unless otherwise specified)
PARAMETER TEST
CONDITIONS
MIN
TYP.
MAX
UNITS
Output Voltage
I
L
=2mA, V
IN-
V
OUT
=2V
Vo0.98
Vo
Vo1.02
V
Adjustable (R1=120,R2=200,Vout=3.3V)
Reference Voltage
Vin-Vo=2V, I
L
=2mA 1.238
1.250
1.262
V
Output Voltage Temperature
Coefficient
50
150
PPM/
C
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 UR132
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R102-007,E
TYPICAL APPLICATION CIRCUIT
UTC
UR132
APPLICATION INFORMATION
A 10
F (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 1
F capacitor (or larger) should be placed between V
IN
to GND.
UR132 ADJUSTABLE
UTC
UR132
+
+
V
REF
R1
R2
10
uF
1
uF
V
OUT
V
IN
10
uF
Cr
Cr:10uF to improve ripple rejection
V
OUT
=V
REF
(1+R2/R1)+I
ADJ
*R2
I
ADJ
+
V
IN
V
OUT
ADJ
UTC UR132
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R102-007,E
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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