UM1430 Datasheet, PDF (1/19 Pages) Union Semiconductor, Inc. – 18V Input, 100mA Current Limited, Micropower Linear Regulator

UM1430/1440
18V Input, 100mA Current Limited, Micropower
Linear Regulator
UM1430S-xx SOT23-3
UM1430S5-xx/UM1440S-xx SOT23-5
UM1430Y-xx/UM1430B-xx SOT89-3
UM1440Y-xx SOT89-5
General Description
The UM1430/1440 series are high input voltage low quiescent current regulators implemented in
CMOS technology. It can accept input voltage as high as 18V with 100mA output current limit.
The output voltages are selectable in 100mV step within a range of 2.0V to 6.0V. 100mA output
current limiting is built in to provide protection for the regulators against fault conditions. CMOS
technology ensures low voltage drop and low quiescent current.
With a chip enable control pin, the UM1440 can turn off the output and greatly reduce the power
consumption by setting the enable pin low.
The UM1430 is available in SOT23-3, SOT23-5 and SOT89-3 packages. The UM1440 is
available in SOT23-5 and SOT89-5 packages.
Applications
Features
 Communication Equipment
 Audio/Video Equipment
 Input Voltage Range: 3.6V to 18V
 30mA Guaranteed Output Current
 ±3% Voltage Accuracy at 30mA
 Low Dropout Voltage:
250mV (Typical) at 30mA
 Low Quiescent Current:
4.8μA@V_IN=18V (Typical)
 Available Fixed Output Voltage from 2.0V to
6.0V with 0.1V Step
 With Enable Control (UM1440S-xx,
UM1440Y-xx)
 Output Current Limit
 UM1430: Low Profile SOT23-3, SOT23-5
and SOT89-3 Packages
UM1440: Low Profile SOT23-5 and
SOT89-5 Packages
Typical Application Circuit
VIN
VIN
VOUT
1µ F
UM1430
GND
VOUT
10µ F
VIN
VIN
VOUT
1µ F
UM1440
Chip Enable
EN
GND
VOUT
10µ F
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