LINEAR REGULATOR. LR1812 Datasheet

LR1812 REGULATOR. Datasheet pdf. Equivalent


UTC LR1812
UNISONIC TECHNOLOGIES CO., LTD
LR1812
1.0A FAST ULTRA LOW
DROPOUT LINEAR
REGULATOR WITH REVERSE
CURRENT PROTECTION
DESCRIPTION
The UTC LR1812 operate from a +1.5V ~ +6V input supply as
fast ultra low-dropout linear regulators. Wide output voltage range
options are available. The fast response characteristic to make
UTC LR1812 suitable for low voltage microprocessor application.
The low quiescent current operation and low dropout quality
caused by the CMOS process.
The UTC LR1812 has low dropout voltage. The ground pin
current is typically 60uA.
Output Voltage Precision: Multiple output voltage options are
available and ranging from 1.2V ~ 5.0V at room temperature with a
guaranteed accuracy of ±1.5%, and ±3.0% when varying line and
load.
With the reverse current protection function of a driver
transistor, the reverse current flow is prohibited when VOUT
voltage is higher than VIN voltage. For an example, when a battery
is connected to the VOUT pin, battery current will not flow back to
the UTC LR1812
The output voltage types of UTC LR1812-xx are fixed one in
the IC.
FEATURES
* Low Dropout Voltage
* The Guaranteed Output Current is 1A DC
* Output Voltage Accuracy ± 1.5%
* Over temperature Protection And Over current Protection
* Reverse Current Protection
ORDERING INFORMATION
Note:
Ordering Number
LR1812G-xx-AF5-R
LR1812G-xx-SH2-R
xx: Output Voltage, refer to Marking Information.
Package
SOT-25
HSOP-8
CMOS IC
Packing
Tape Ree
Tape Reel
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
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LR1812 Datasheet
Recommendation LR1812 Datasheet
Part LR1812
Description 1.0A FAST ULTRA LOW DROPOUT LINEAR REGULATOR
Feature LR1812; UNISONIC TECHNOLOGIES CO., LTD LR1812 1.0A FAST ULTRA LOW DROPOUT LINEAR REGULATOR WITH REVERSE CURR.
Manufacture UTC
Datasheet
Download LR1812 Datasheet




UTC LR1812
LR1812
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
SOT-25
HSOP-8
12: 1.2V
15: 1.5V
18: 1.8V
25: 2.5V
33: 3.3V
MARKING
CMOS IC
PIN CONFIGURATION
VOUT 1
ON/ OFF 2
NC 3
GND
8 VIN
7 NC
6 NC
VOUT
5
NC
4
GND 4
5 NC
HSOP-8
1 23
VIN GND ON/OFF
SOT-25
PIN DESCRIPTION
PIN NO.
HSOP-8
(Fixed)
SOT-25
PIN NAME
PIN DESCRIPTION
1
5
VOUT
Output voltage
2
3
ON/OFF
ON/OFF select pin, when connected to the ground the chip in
operating normally.
3, 5,6,7
4
NC No connection
4
2
GND
GND
8 1 VIN Input voltage
Note: The NC pin is electrically open.
The NC pin can be connected to VIN or GND.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R102-079.a



UTC LR1812
LR1812
BLOCK DIAGRAM
Fixed Output Voltage
VIN
ON/OFF
Reverse
Current
Protection
Current Limit
&
Thermal Shutdown
Erro+r
Amp-
ON/OFF
Control
each
circuit
VREF
CMOS IC
VOUT
R1
R2
GND
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 6
QW-R102-079.a







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