UNISONIC TECHNOLOGIES CO., LTD
UR133/A
300/500mA LOW DROPOUT
LINEAR VOLTAGE
REGULATORS
DESCRIPTION
The UTC
UR133/A
are 300/500mA fixed output voltage low
dropout linear regulators. 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.
LINEAR INTEGRATED CIRCUIT
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, 3.6V, 3.7V, 4.7V, 5.0V
ORDERING INFORMATION
Packing
Package
Pin Assignment
Lead Free
Halogen Free
UR1331L-xx-AA3-2-
UR1331G-xx-AA3-2-
SOT-223
A: GOI
R: Tape Reel
UR1331L-xx-AB3-2-
UR1331G-xx-AB3-2-
SOT-89
B: OGI
B: Tape Box
C: GIO
UR1331L-xx-T92-2-
UR1331G-xx-T92-2-
TO-92
K: Bulk
D: IGO
UR1331L-xx-T92-2-
UR1331G-xx-T92-2-
TO-92
Note: 1.
1:
Current code: Blank: 300mA
A: 500mA
2. Pin assignment: I:V
IN
(Positive Power Input) O:V
OUT
(Output) G:GND(Ground/Adjustable)
3. xx: Output Voltage, refer to Marking Information.
Ordering Number
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
1 of 8
QW-R102-005,T
UR133/A
MARKING INFORMATION
PACKAGE
VOLTAGE
CODE
PIN
PIN 1 PIN 2 PIN 3
CODE
A
B
SOT-89
15:1.5V
18:1.8V
22:2.2V
25:2.5V
27:2.7V
28:2.8V
29:2.9V
30:3.0V
33:3.3V
35:3.5V
36:3.6V
37:3.7V
47:4.7V
50:5.0V
A D : ADJ
C
D
A
B
C
D
A
B
C
D
G
O
G
I
G
O
G
I
G
O
G
I
O
G
I
G
O
G
I
G
O
G
I
G
I
I
O
O
I
I
O
O
I
I
O
O
LINEAR INTEGRATED CIRCUIT
MARKING
Date Code
XX
UR133/AX
XX
Voltage Code
Pin Code
L: Lead Free
G: Halogen Free
1
2
3
TO-92
SOT-223
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 8
QW-R102-005,T
UR133/A
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
V
IN
LINEAR INTEGRATED CIRCUIT
RATINGS
UNIT
Input Voltage V
IN
-0.3 ~ +12
V
SOT-89
500
mW
Power Dissipation
P
D
TO-92
600
mW
SOT-223
800
mW
Operating Temperature
T
OPR
-40 ~ +85
°C
Storage Temperature
T
STG
-65 ~ +150
°C
Note: 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.
THERMAL DATA
PARAMETER
Junction to Case
Junction to Ambient
SOT-89
SOT-223
SOT-89
TO-92
SOT-223
SYMBOL
θ
JC
θ
JA
RATINGS
100
15
300
160
60
UNIT
°C/W
°C/W
°C/W
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, C
IN
=1μF, C
OUT
=10μF, unless otherwise specified)
For UR133/A-1.5V, 1.8V, 2.2V, 2.5V, 2.7V, 2.8V, 2.9V, 3.0V
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
1.47
1.77
2.16
2.45
2.65
2.74
2.84
2.94
Dropout Voltage
(note 4,5)
Line Regulation
Load Regulation (Note 2)
Current Limit (Note 3)
UR133
UR133A
UR133
UR133A
UR133
UR133A
V
D
ΔV
OUT
ΔV
OUT
I
LIMIT
I
ST-BY
I
L
=300mA
I
L
=500mA
I
L
=2mA, V
IN
-V
OUT
=2V ~ V
IN
=9V
I
L
=2mA ~ 300mA, V
IN
-V
OUT
=2V
I
L
=2mA ~ 500mA, V
IN
-V
OUT
=2V
V
IN
-V
OUT
=2V, V
OUT
=0V
I
L
=0, V
IN
=9V
50
TYP
1.50
1.80
2.20
2.50
2.70
2.80
2.90
3.00
MAX
1.53
1.83
2.24
2.55
2.75
2.86
2.96
3.06
1.5
10
10
350
550
0.5
30
50
UNIT
V
V
V
V
V
V
V
V
V
%V
OUT
mV
mV
mA
mA
mA
PPM/°C
Output Voltage-UR133/A
V
OUT
I
L
=2mA, V
IN-
V
OUT
=1.4V
Standby Current
Output Voltage Temperature
Coefficient
5.0
150
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 8
QW-R102-005,T
UR133/A
ELECTRICAL CHARACTERISTICS(Cont.)
LINEAR INTEGRATED CIRCUIT
For UR133/A-ADJ 3.3V, 3.5V, 3.6V, 3.7V, 4.7V, 5.0V
PARAMETER
SYMBOL
TEST CONDITIONS
ADJUSTABLE (R1=120Ω, R2=200Ω, V
OUT
=3.3V)
Reference Voltage
V
REF
V
IN
-V
OUT
=2V, I
L
=2mA
MIN
TYP
MAX
1.262
3.37
3.57
3.67
3.77
4.79
5.10
1.3
1.5
0.5
30
50
UNIT
V
V
V
V
V
V
V
V
V
%V
OUT
mV
mV
mA
mA
mA
μA
μA
μA
Output Voltage-UR133/A
V
OUT
I
L
=2mA, V
IN
-V
OUT
=1.4V
1.238 1.250
3.23
3.30
3.43
3.50
3.53
3.60
3.63
3.70
4.61
4.70
4.90
5.00
Dropout Voltage
(Notes 4, 5)
Line Regulation
Load Regulation
(Note 2)
UR133
UR133A
UR133-ADJ
UR133A-ADJ
V
D
V
D
ΔV
OUT
UR133
10
ΔV
OUT
UR133A
10
UR133
350
Current Limit (Note 3)
I
LIMIT
V
IN
-V
OUT
=2V, V
OUT
=0V
UR133A
550
Standby current
I
ST-BY
I
L
=0, V
IN
=12V
5.0
Adjust Pin Current
I
ADJ
V
IN
=12V
120
UR133
5
V
IN
=2.75V~12V,I
L
=1mA~300mA
Adjust Pin Current
ΔI
ADJ
Change
UR133A
V
IN
=2.75V~12V,I
L
=1mA~500mA
5
Output Voltage Temperature
50
150 PPM/°C
Coefficient
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.
I
L
=300mA
I
L
=500mA
I
L
=300mA
I
L
=500mA
I
L
=2mA, V
IN
-V
OUT
=2V ~ V
IN
=12V
I
L
=2mA ~ 300mA, V
IN
-V
OUT
=2V
I
L
=2mA ~ 500mA, V
IN
-V
OUT
=2V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 8
QW-R102-005,T
UR133/A
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
V
IN
C
I
+
1μF
V
IN
UTC
UR133/A
V
OUT
V
OUT
C
O
10μF
+
GND
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℃. 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
+
1uF
V
IN
UTC
UR133/A
ADJ
I
ADJ
R
2
V
OUT
+
V
REF
R
1
10uF
V
OUT
+
C
R
10uF
C
R
:10uF to improve ripple rejection
V
OUT
=V
REF
(1+R
2
/R
1
)+I
ADJ
*R
2
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 8
QW-R102-005,T
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
