LP3992 Datasheet, PDF (1/9 Pages) National Semiconductor (TI) – Micropower 1.5V CMOS Voltage Regulator with Shutdown Control

December 2002
LP3992
Micropower 1.5V CMOS Voltage Regulator with
Shutdown Control
General Description
The LP3992 regulator is designed to meet the requirements
of portable, battery-powered systems providing an accurate
output voltage, low noise, and low quiescent current. Battery
life will be prolonged by the ability of the LP3992 to provide
a 1.5V output from the low input voltage of 1.9V. Additionally,
when switched to a shutdown mode via a logic signal at the
shutdown pin, the power consumption is reduced to virtually
zero. The LP3992 also features short-circuit and thermal-
shutdown protection.
The LP3992 is designed to be stable with space saving
ceramic capacitors as small as 1.0µF.
The device is available in an SOT23-5 package. Perfor-
mance is specified for a -40˚C to 125˚C temperature range.
For output voltages other than 1.5V and alternative package
options, please contact your local NSC sales office.
Key Specifications
n 1.9 to 5.2V input range
n Accurate 1.5V ± 0.09V output voltage
n Less than 1.5µA quiescent current in shutdown
n Stable with a 1µF output capacitor
n Guaranteed 30mA output current
n Low output voltage Noise; 300µV_RMS
Features
n Operation from a low input voltage; 1.9V
n Low quiescent current; 29µA typical
n Stable with a ceramic capacitor
n Logic controlled shutdown
n Fast turn ON and OFF
n Thermal-overload and short circuit protection
n 5 pin package, SOT23
n -40˚C to +125˚C junction temperature range
Typical Application Circuit
© 2002 National Semiconductor Corporation DS200412
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