UM37550S Datasheet, PDF (1/12 Pages) Union Semiconductor, Inc. – 300mA, Micropower, VLDO Linear Regulator

UM375xx
300mA, Micropower, VLDO Linear Regulator
UM375xxS SOT23-5
UM375xxP SOT353
General Description
The UM375xx series are VLDO (very low dropout) linear regulators designed for low power
portable applications. Typical output noise is only 170μV_RMS(UM37512) 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, under voltage lockout, stability with ultra low
ESR ceramic capacitors as small as 1μF, thermal overload protection and output current limiting.
The UM375xx series are available in a low profile SOT23-5 and SOT353 package.
Applications
 Bluetooth/802.11 Cards
 PDAs and Notebook Computers
 Portable Instruments and
Battery-Powered Systems
 Cellular Phones
Features
 Input Voltage Range: 2.0V to 6.0V
 Very Low Dropout: 200mV(max) at 100mA
 Low Noise:170μV_RMS (UM37512，10Hz to
100kHz)
 ±2% Voltage Accuracy at 150mA
 Fixed Output Voltage:
1.2V to 5.0V with 100mV interval
 Output Current Limit
 Stable with 1μF Output Capacitor
 Thermal Overload Protection
 Low Profile SOT23-5 and SOT353 Package
Pin Configurations
Top View
5XX
UM375xxS
M: Month Code
SOT23-5
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http://www.union-ic.com Rev.05 Nov.2013
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