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UM153xx/UM154xx

Ultra Low Quiescent Current Linear Regulator

UM153xxS SOT23-3

UM153xxY SOT89-3

UM153xxDA DFN4 1.8×1.2

UM154xxS SOT23-5

UM154xxY SOT89-5

UM154xxDA DFN6 2.0×2.0

General Description

The UM153xx/UM154xx series are ultra low quiescent current low dropout linear regulators

designed for low power portable applications. The range of output voltage is from 1.3V to 5.0V

while operated from 2.2V to 5.5V input. The EN function of UM154xx can disable the entire

circuit by inputting low level signal.

The UM153xx/UM154xx series offer high output voltage accuracy, excellent transient response,

stability with ultra low ESR ceramic capacitors as small as 1μF, thermal overload protection and

output current limiting. The UM153xx is available in a low profile SOT23-3, SOT89-3 or DFN4

1.8×1.2 package. The UM154xx is available in a low profile SOT23-5, SOT89-5 or DFN6

2.0×2.0 package.

Applications

Features



Battery-Powered Systems



Reference Voltage Sources



Portable AV Systems



Portable Games



Cellular Phones



Utility Meters



Toys



Maximum Input Voltage: 5.5V



±2.0% Voltage Accuracy at 30mA



Fast Transient Response



Output Current Limit



Stable with 1μF Output Capacitor



Thermal Overload Protection



Low Profile SOT23-3, SOT89-3 or DFN4

1.8×1.2 Package(UM153xx)

Low Profile SOT23-5, SOT89-5 or DFN6

2.0×2.0 Package(UM154xx)

UM153xx Series Pin Configurations & Top View

GND

VOUT

VIN

1

2

3

1

2

3

XXX

M: Month Code

UM153xxS

SOT23-3