UM165415 Datasheet, PDF (1/7 Pages) Union Semiconductor, Inc. – 300mA, Micropower, VLDO Linear Regulator

UM165XX
300mA, Micropower, VLDO Linear Regulator
UM165XX SOT23-3
General Description
The UM165XX series are VLDO (very low dropout) linear regulators designed for low power
portable applications. Typical output noise is only 75μV_RMS and maximum dropout is just 90mV at
the load current of 150mA.The internal P-channel MOSFET pass transistor requires no base
current, allowing the device to draw only 100μA 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, reverse-battery protection,
short-circuit and thermal overload protection and output current limiting.
The UM165XX 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 Very Low Dropout: 90mV(max) at 150mA
z Maximum Input Voltage: 6.0V
z Low Noise:75μV_RMS (10Hz to 100kHz)
z ±2%Voltage Accuracy at 150mA
z Fast Transient Response
z Under Voltage Lockout
z Fixed Output Voltage:
3.3V/3.0V/2.8V/2.7V/2.5V/1.8V/1.5V/1.3V/
1.2V
z Output Current Limit
z Reverse-Battery Protection
z No Protection Diodes Needed
z Stable with 1μF Output Capacitor
z Short-Circuit and Thermal Overload
Protection
z Low Profile SOT23-3 Package
Pin Configurations
Top View
UM165XX
M: Monthly Code
SOT23-3
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http://www.union-ic.com Rev.04 Feb.2012
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