UNISONIC TECHNOLOGIES CO., LTD
LR9282
Preliminary
CMOS IC
300mA LDO REGULATOR
DESCRIPTION
The UTC
LR9282
is a typical LDO (linear regulator) with the
features of high output voltage accuracy, low supply current, low
ON-resistance. Internally, there’re many functions of UTC
LR9282
which can be seen in the block figure. There are a voltage
reference unit, an error amplifier, resistor-net for voltage setting, a
current limit circuit, and a chip enable circuit in each UTC
LR9282.
The output voltage of these ICs is fixed with high accuracy.
FEATURES
* Supply current (TYP=1µA)
* Output voltage accuracy (±2%)
* Output voltage range (1.2V~5V)
* Dropout voltage (TYP=200mV )(I
OUT
=100mA, V
OUT
=1.8V Output
type)
* Line regulation (TYP=0.2%/V)
* Built-in fold-back protection circuit (TYP=15mA)
(Current at short mode)
ORDERING INFORMATION
Ordering Number
Package
SOT-89
SOT-23-3
DFN1010-4
Packing
Tape Reel
Tape Reel
Tape Reel
Lead Free
Halogen Free
LR9282L-xx-AB3-R
LR9282G-xx-AB3-R
LR9282L-xx-AE3-R
LR9282G-xx-AE3-R
LR9282L-xx-K04-1010-R
LR9282G-xx-K04-1010-R
Note: xx: Output Voltage, refer to Marking Information.
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MARKING INFORMATION
PACKAGE
VOLTAGE CODE
Preliminary
CMOS IC
MARKING
L: Lead Free
G: Halogen Free
Voltage Code
SOT-23-3
SOT-89
15: 1.5V
18: 1.8V
28: 2.8V
30: 3.0V
33: 3.3V
36: 3.6V
40: 4.0V
RPXXX
DFN1010-4
C: 1.5V
D: 1.8V
G: 2.8V
J: 3.0V
K: 3.3V
H: 3.6V
L: 4.0V
PIN CONFIGURATION
PIN DESCRIPTION
SOT-23-3
1
2
3
-
PIN NO.
SOT-89
1
3
2
-
DFN1010-4
2
1
4
3
PIN NAME
V
SS
V
OUT
V
IN
EN
DESCRIPTION
Ground
Regulated output voltage.
Positive power supply input voltage.
Chip Enable
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LR9282
BLOCK DIAGRAM
Preliminary
CMOS IC
V
IN
EN
ON/OFF
Control
-
Amp
+
Each circuit
Current
Limiter
V
OUT
R2
R1
Voltage
Reverence
V
SS
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PARAMETER
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
(T
A
=25°C, unless otherwise specified)
SYMBOL
V
IN
I
OUT
RATINGS
UNIT
Input Voltage
9
V
Output Current
500
mA
SOT-23-3
280
mW
Power Dissipation
P
D
SOT-89
500
mW
DFN1010-4
280
mW
Operating Temperature
T
OPT
-40 ~ +125
°C
Storage Temperature
T
STG
-40 ~ +125
°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.
ELECTRICAL CHARACTERISTICS
MIN
1.2
-2
200
1.0
10
0.2
400
500
15
70
50
TYP
MAX
8
5
2
1.5
0.35
UNIT
V
V
%
mV
µA
mV
%/V
mA
mA
dB
(V
IN
=V
OUT
+1V,C
IN
=C
OUT
=1μF ,T
A
=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Input Voltage
V
in
Output Voltage
V
OUT
DC Output Accuracy
I
OUT
=1mA
Dropout Voltage
V
DIF
I
OUT
=100mA, V
OUT
=1.8V
Supply Current
I
SS
I
OUT
=0mA
Load Regulation
∆V
OUT
1mA
≤I
OUT
≤100mA
∆V
OUT
I
OUT
=10mA
Line Regulation
V
OUT
+1V≤V
IN
≤8V
V
OUT*
∆V
IN
Output Current Limit
I
LIM
V
OUT
=0.5* V
OUT
(normal), V
IN
=5V
Short Current
I
SC
V
OUT
=0V
Power Supply
100Hz
PSRR
I
OUT
=50mA
Rejection Ratio
1kHz
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LR9282
Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUIT
V
OUT
IN
V
IN
UTC
LR9282
V
OUT
C
IN
1uF
Ceramic
C
OUT
1uF
Ceramic
Vss
V
IN
V
IN
UTC
LR9282
EN
Vss
V
OUT
V
OUT
C
IN
1uF
Ceramic
C
OUT
1uF
Ceramic
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. UTC reserves the right to
make changes to information published in this document, including without limitation specifications and
product descriptions, at any time and without notice. This document supersedes and replaces all
information supplied prior to the publication hereof.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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