LDO REGULATOR. LR1143 Datasheet

LR1143 REGULATOR. Datasheet pdf. Equivalent

Part LR1143
Description 400mA ADJUSTABLE LDO REGULATOR
Feature UNISONIC TECHNOLOGIES CO., LTD LR1143 LINEAR INTEGRATED CIRCUIT HIGH PSRR, LOW DROPOUT, 400mA ADJ.
Manufacture UTC
Datasheet
Download LR1143 Datasheet

UNISONIC TECHNOLOGIES CO., LTD LR1143 LINEAR INTEGRATED CI LR1143 Datasheet
Recommendation Recommendation Datasheet LR1143 Datasheet





LR1143
UNISONIC TECHNOLOGIES CO., LTD
LR1143
LINEAR INTEGRATED CIRCUIT
HIGH PSRR, LOW DROPOUT,
400mA ADJUSTABLE LDO
REGULATOR
DESCRIPTION
The UTC LR1143 is a CMOS-based 400mA voltage regulator
with low supply current, low dropout, adjustable output voltage,
The device offering high PSRR and low dropout. The quiescent
current is as low as 35μA, further prolonging the battery life. The
UTC LR1143 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in handheld wireless devices.
The UTC LR1143 consumes typical 0.7μA in shutdown mode.
The other features include low dropout voltage, high output
accuracy, current limit protection, and enable/shutdown control.
FEATURES
* Wide operating voltage range : 3.0V~5.5V
* Adjustable output voltage
* Enable/shutdown control
* Low-noise for RF application
* Ultra-Fast response in line/load transient
* Current limit protection
* Output only 1μF capacitor required for stability
* High power supply rejection ratio
ORDERING INFORMATION
Ordering Number
LR1143G-xx-AF5-R
Note: xx: Output Voltage, refer to Marking Information.
Package
SOT-25
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 4
QW-R102-056.E



LR1143
LR1143
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
SOT-25
AD: ADJ
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
MARKING
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
PIN NAME
VIN
GND
EN
FB
VOUT
Voltage Input.
Ground.
Chip Enable (Active High).
Output Voltage Feedback.
Voltage Output.
BLOCK DIAGRAM
DESCRIPTION
EN
POR
OTP
VREF
-
FB +
Current
Limit
MOSFET
Driver
VIN
VOUT
GND
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 4
QW-R102-056.E





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