UNISONIC TECHNOLOGIES CO., LTD

LXXLD50

CMOS IC

www.unisonic.com.tw

1 of 11

Copyright © 2016 Unisonic Technologies Co., Ltd

QW-R502-474.D

0.8V REFERENCE ULTRA LOW

DROPOUT LINEAR REGULATOR

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DESCRIPTION

The UTC LXXLD50 is a 5A ultra low dropout linear regulator

providing designers with well supply voltage for applications of NB and

front-side-bus termination on motherboards.

A control voltage for the circuitry and a main supply voltage for

power conversion are needed as supply voltages to reduce power

dissipation and provide extremely low dropout.

The UTC LXXLD50 contains some function circuits. A Power-On-

Reset (POR) circuit monitors both supply voltages to prevent undesired

operations. A thermal shutdown and current limit circuits prevent this

device from being damaged due to thermal and current over-loads. A

POK indicates the output status with a pre-set time delay. It can control

other converter for power sequence. The UTC LXXLD50 can be

HSOP-8

enabled by other power system. Pulling and holding the EN pin below 0.3V shuts off the output.

The UTC LXXLD50 is ideal for applications,such as front side bus VTT (1.2V/5A), note book PC applications,

and motherboard applications.

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FEATURES

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Low ESR Output Capacitor

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High Output Accuracy : ±1.5% Over Line, Load and Temperature

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Fast Transient Response

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Protection function: Internal Soft-Start

Current-Limit Protection

Under-Voltage Protection

Thermal Shutdown with Hysteresis

Over-Voltage Protection

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Power-OK Output with a Delay Time

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Shutdown for Standby or Suspend Mode

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Lead Free Available (RoHS Compliant)

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ORDERING INFORMATION

Ordering Number

Package

Packing

LXXLD50G-SH2-R

HSOP-8

Tape Reel

Note: XX: Output Voltage, refer to Marking Information.