LP3992 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 1.0碌F.
The device is available in an SOT23-5 package. Perfor-
mance is specified for a -40藲C to 125藲C temperature range.
For output voltages other than 1.5V and alternative package
options, please contact your local NSC sales office.
Key Specifications
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1.9 to 5.2V input range
Accurate 1.5V
鹵
0.09V output voltage
Less than 1.5碌A(chǔ) quiescent current in shutdown
Stable with a 1碌F output capacitor
Guaranteed 30mA output current
Low output voltage Noise; 300碌V
RMS
Features
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Operation from a low input voltage; 1.9V
Low quiescent current; 29碌A(chǔ) typical
Stable with a ceramic capacitor
Logic controlled shutdown
Fast turn ON and OFF
Thermal-overload and short circuit protection
5 pin package, SOT23
-40藲C to +125藲C junction temperature range
Typical Application Circuit
20041201
漏 2002 National Semiconductor Corporation
DS200412
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