UTC UR133/A
LINEAR INTEGRATED CIRCUIT
300/500mA LOW DROPOUT
LINEAR VOLTAGE REGULATOR
DESCRIPTION
The UTC UR133/A is a 300/500mA 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
1
SOT-89
TO-92
FEATURES
*Guaranteed 300/500mA 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 1.5V, 1.8V,2.2V,
2.5V, 2.7V , 2.8V , 2.9V ,3.0V, 3.3V , 3.5V , 3.7V ,
4.7V , 5.0V
3
2 1
SOT-223
APPLICATIONS
*Voltage regulator for LAN Card, CD-ROM, and DVD
*Wireless communication systems
PIN DESCRIPTION
NAME
VOUT
GND
VIN
FUNCTION
Output
Ground/Adjustable
Positive Power Input
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-005,J
UTC UR133/A
MARKING INFORMATION
PACKAGE
LINEAR INTEGRATED CIRCUIT
PIN 2
OUT
GND
IN
GND
OUT
GND
IN
GND
OUT
GND
IN
GND
PIN 3
IN
IN
OUT
OUT
IN
IN
OUT
OUT
IN
IN
OUT
OUT
VOLTAGE
CODE
VOLTAGE PIN CODE PIN 1
CODE
15:1.5V
18:1.8V
A
B
C
D
A
B
C
D
A
B
C
D
GND
OUT
GND
IN
GND
OUT
GND
IN
GND
OUT
GND
IN
MARKING
VOLTAGE
CODE
PIN CODE
SOT-89
22:2.2V
25:2.5V
27:2.7V
28:2.8V
29:2.9V
30:3.0V
DATE
CODE
R133/A
1
2
3
TO-92
33:3.3V
35:3.5V
37:3.7V
47:4.7V
50:5.0V
AD:
ADJUSTABLE
UTC
UR133/A
VOLTAGE
CODE
PIN CODE
DATE
CODE
1
2
3
UR133/A
PIN CODE
DATE
CODE
SOT-223
1
2
3
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input Voltage Vin
Operating Junction Temperature Range
Storage Temperature Range
Power Dissipation
SOT-89
Thermal Resistance, R
OJC
=100°C/W
Thermal Resistance, R
OJA
=300°C/W
TO-92
Thermal Resistance, R
OJA
=160°C/W
SOT-223
Thermal Resistance, R
OJC
=15°C/W
Thermal Resistance R
OJA
=60°C/W (est)
MIN.
-0.3
-40
-65
TYP.
MAX.
12
125
150
UNIT
V
°C
°C
W
0.50
0.60
0.80
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R102-005,J
UTC UR133/A
PARAMETER
Output Voltage
UR133/A
LINEAR INTEGRATED CIRCUIT
TEST CONDITIONS
I
L
=2mA, V
IN-
V
OUT
=1.4V
UTC UR133/A 1.5V, 1.8V, 2.2V, 2.5V, 2.7V, 2.8V, 2.9V,3.0V
ELECTRICAL CHARACTERISTICS
(Ta=25°C, C
IN
=1µF, C
OUT
=10µF, unless otherwise specified)
MIN
1.47
1.77
2.16
2.45
2.65
2.74
2.84
2.94
TYP.
1.50
1.80
2.20
2.50
2.70
2.80
2.90
3.00
50
10
10
MAX
1.53
1.83
2.24
2.55
2.75
2.86
2.96
3.06
150
0.5
30
50
UNITS
V
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
(note 2)
UR133
UR133A
Current Limit (note 3)
UR133
UR133A
Dropout Voltage (note 4,5)
Standby current
PPM/°C
%V
OUT
mV
mV
mA
mA
V
mA
I
L
=2mA, V
IN-
Vout=2V~Vin=9V
I
L
=2mA~300mA, V
IN-
Vout =2V
I
L
=2mA~500mA, V
IN-
Vout =2V
V
IN-Vout
=2V, V
OUT
=0V
350
550
1.5
I
L
=0, V
IN
=9V
3.0
UTC UR133/A ADJ 3.3V, 3.5V, 3.7V, 4.7V, 5.0V
ELECTRICAL CHARACTERISTICS
(Ta=25°C, C
IN
=1µF, C
OUT
=10µF, unless otherwise specified)
PARAMETER
TEST CONDITIONS
MIN
1.238
3.23
3.43
3.63
4.61
4.90
TYP.
1.250
3.30
3.50
3.70
4.70
5.00
50
10
10
MAX
1.262
3.37
3.57
3.77
4.79
5.10
150
0.5
30
50
UNITS
V
V
Adjustable (R1=120Ω,R2=200Ω,Vout=3.3V)
Reference Voltage
Vin-Vo=2V, I
L
=2mA
Output Voltage UR133/A
I
L
=2mA, V
IN-
V
OUT
=1.4V
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
(note 2)
UR133
UR133A
Current Limit (note 3)
UR133
UR133A
Dropout Voltage (note 4,5)
Standby current
PPM/°C
%V
OUT
mV
mV
mA
mA
V
mA
I
L
=2mA, V
IN-
Vout=2V~Vin=12V
I
L
=2mA~300mA, V
IN-
Vout =2V
I
L
=2mA~500mA, V
IN-
Vout =2V
V
IN-Vout
=2V, V
OUT
=0V
350
550
1.3
I
L
=0, V
IN
=12V
5.0
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.
3
QW-R102-005,J
UTC UR133/A
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
UTC
UR133/A
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.
UR133/A ADJUSTABLE
V
IN
V
IN
UTC
UR133/A
ADJ
I
ADJ
R2
V
OUT
V
OUT
+
1
uF
V
REF
R1
+
10
uF
+
Cr
10
uF
Cr:10uF to improve ripple rejection
V
OUT
=V
REF
(1+R2/R1)+I
ADJ
*R2
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R102-005,J
UTC UR133/A
300
Output Current, I
OUT(
mA)
250
200
150 V
OUT
=3.5V
100
50
0
3
4
5
V
OUT
=3.3V
V
OUT
=2.5V
LINEAR INTEGRATED CIRCUIT
UR133
100
50
0
-50
C
OUT
=1uF
I
L
=1mA
V
OUT
=5.2V
Line Transient Response
Output Current v.s. Input Voltage
V
OUT
=5.0V
V
OUT
=4.7V
V
OUT
=3.7V
Output Voltage
(mV,AC)
Input Voltage(V)
8
6
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Time (mS)
6 7 8 9 10 11 12 13
Input Voltage (V)
Ground Current (mA)
3
2
1
0
V
OUT
=1.5V,1.8V,2.2V,2.5V,
2.7V,2.8V,2.9V,3.0V
Output Voltage
(mV,AC)
4
Ground Current vs.Input Voltage
20
0
-20
-40
-60
150
0.1
Load Transient Response
V
OUT
=4.7V,5.0V
0
2
4
6
8
10
12
Load Current
(mA)
V
OUT
=3.3V,3.5V,3.7V
Input Voltage (V)
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Time (mS)
Dropout Voltage (V)
1.6
1.5
1.4
1.3
1.2
0
0
V
OUT
=1.5V,1.8V,2.2V,2.5V,2.7V,
2.8V,2.9V,3.0V
V
OUT
=4.7V,5.0V
V
OUT
=3.3V,3.5V,3.7V
50
100
150
200
250
300
Output Voltage
(mV,AC)
1.7
Dropout Voltage vs.Load Current
40
20
0
-20
-40
150
0.1
Load Transient Response
C
OUT
=1uF
V
OUT
=5.2V
Load Current
(mA)
Load Current (mA)
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Time (mS)
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R102-005,J
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