UNISONIC TECHNOLOGIES CO., LTD

LXXLD30

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 7

Copyright © 2011 Unisonic Technologies Co., Ltd

QW-R502-330.b

0.8V REFERENCE ULTRA LOW

DROPOUT LINEAR REGULATOR

DESCRIPTION

The UTC LXXLD30 is a typical LDO with the features of very low

dropout voltage as low as 0.2V at output current 3A.

For normal operation, two supply voltages are necessary. One

called control voltage from other equipment can shutdown the output

voltage and it should pull and hold the voltage of EN pin less than

0.3V. Another one is the main supply voltage whose purpose is for

main power conversion, to keep the power dissipation low, and to

make the dropout voltage lower.

Internally, in the UTC LXXLD30, there’re many functions which

can be seen in the block figure to prevent the IC from being

damaged. Internal Power-On-Reset (POR) circuit can control the two

supply voltages to prevent fault operations of the circuit; the thermal

shutdown circuit is able to protect the device from over thermal

operation, and a current limit function will keep the device work safely

under current over-loads.

The UTC LXXLD30 can be used as an ideal to provide well

supply voltage in the applications, such as front-side-bus termination

note book PC applications.

FEATURES

* Low ESR Output Capacitor

* ±1.5% over Line, Load and Temperature Output Accuracy

* Fast Transient Response

* Output Voltage Adjustable through External Resistors

* With internal Soft-Start

* Internal Current Limit Protection

* Internal Under Voltage Protection

* Hysteretic Thermal Shutdown

* With Power-OK Output (with a Delay Time)

* For Standby or Suspend Mode: Shutdown

HSOP-8

ORDERING INFORMATION

Ordering Number

Lead Free

Halogen Free

Package

Packing

LXXLD30L-SH2-R

LXXLD30G-SH2-R

HSOP-8

Tape Reel

xx: Output Voltage, refer to Marking Information.