LP2967 Datasheet, PDF (1/17 Pages) National Semiconductor (TI) – Dual Micropower 150 mA Low-Dropout Regulator in micro SMD Package

April 2003
LP2967
Dual Micropower 150 mA Low-Dropout Regulator in
micro SMD Package
General Description
The LP2967 is a 150 mA, dual fixed-output voltage regulator
designed to provide ultra low-dropout and low noise in bat-
tery powered applications.
Using an optimized VIP (Vertically Integrated PNP) process,
the LP2967 delivers unequalled performance in all specifi-
cations critical to battery powered designs:
Dropout Voltage: Typically 240 mV at 150 mA load, and
6 mV at 1 mA load for each output.
Ground Pin Current: Typically 1 mA at 150 mA load, and
200 µA at 1 mA load for each output.
Enhanced Stability: The LP2967 is stable with output ca-
pacitor ESR as low as 5 mΩ, which allows the use of ceramic
capacitors on the output.
Sleep Mode: Less than 2 µA quiescent current when SD
pins are pulled low.
Smallest Possible Size: micro SMD package uses absolute
minimum board space.
Precision Output: 1.25% tolerance.
Low Noise: By adding a 100 nF bypass capacitor, output
noise can be reduced to 30 µV (typical).
Multiple voltage options, from 1.8V to 5.0V, are available.
Consult factory for custom voltages.
Features
n Ultra low drop-out voltage
n Guaranteed 150mA output current, 300 mA peak
n Smallest possible size (micro SMD package)
n Requires minimum external components
n Stable with 2.2 µF tantalum or ceramic capacitor
n Output voltage accuracy ±1%
n < 2 µA quiescent current when shut down
n Wide supply voltage range (16V max.)
n Low Z_OUT: 0.3Ω typical (10 Hz to 1 MHz)
n Over temperature/over current protection
n −40˚C to +125˚C junction temperature range
n Custom voltages available
Applications
n Cellular Phone
n Palmtop/Laptop Computer
n Personal Digital Assistance (PDA)
n Camcorder, Personal Stereo and Camera
Block Diagram
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