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http://www.union-ic.com

Rev.01 Nov.2010

1/10

UM365XX

300mA, Micropower, VLDO Linear Regulator

UM365XXS SOT23-3

General Description

The UM365XXS series are VLDO (very low dropout) linear regulators designed for low power

200mV at the load current of 100mA.The internal P-channel MOSFET pass transistor requires no

base current, allowing the device to draw only 90μA during normal operation at the maximum

load current of 300mA.

Other features include high output voltage accuracy, excellent transient response, under voltage

lockout, stability with ultralow ESR ceramic capacitors as small as 1μF, thermal overload

protection and output current limiting.

The UM365XXS series are available in a low profile SOT23-3 package.

Applications

Features

Bluetooth/802.11 Cards

PDAs and Notebook Computers

Portable Instruments and

Battery-Powered Systems

Cellular Phones

Low Dropout: 200mV(max) at 100mA

Maximum Input Voltage: 6.0V

±2%Voltage Accuracy at 150mA

Fast Transient Response

Fixed Output Voltage:

5.0V/4.8V/4.7V/4.5V/4.3V/4.2V/4.0V/3.8V/

3.6V/3.5V/3.3V/3.0V/2.8V/2.7V/2.5V/1.8V/

1.5V/1.3V/1.2V

Output Current Limit

Stable with 1μF Output Capacitor

Thermal Overload Protection

Low Profile SOT23-3 Package

Pin Configurations

Top View

UM365XXS

M: Month Code

SOT23-3