UM36550S Datasheet, PDF (1/10 Pages) Union Semiconductor, Inc. – 300mA, Micropower, VLDO Linear Regulator

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
portable applications. Typical output noise is only 100μV_RMS and maximum dropout is just
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
z Bluetooth/802.11 Cards
z PDAs and Notebook Computers
z Portable Instruments and
Battery-Powered Systems
z Cellular Phones
Features
z Low Dropout: 200mV(max) at 100mA
z Maximum Input Voltage: 6.0V
z Low Noise:100μV_RMS (10Hz to 100kHz)
z ±2%Voltage Accuracy at 150mA
z Fast Transient Response
z 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
z Output Current Limit
z Stable with 1μF Output Capacitor
z Thermal Overload Protection
z Low Profile SOT23-3 Package
Pin Configurations
Top View
UM365XXS
M: Month Code
SOT23-3
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http://www.union-ic.com Rev.01 Nov.2010
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