LP2982 Datasheet, PDF (1/17 Pages) National Semiconductor (TI) – Micropower 50 mA Ultra Low-Dropout Regulator

March 2000
LP2982
Micropower 50 mA Ultra Low-Dropout Regulator
General Description
The LP2982 is a 50 mA, fixed-output voltage regulator de-
signed to provide ultra low dropout and lower noise in battery
powered applications.
Using an optimized VIP™ (Vertically Integrated PNP) pro-
cess, the LP2982 delivers unequaled performance in all
specifications critical to battery-powered designs:
Dropout Voltage: Typically 120 mV @ 50 mA load, and 7 mV
@ 1 mA load.
Ground Pin Current: Typically 375 µA @ 50 mA load, and
80 µA @ 1 mA load.
Sleep Mode: Less than 1 µA quiescent current when on/off
pin is pulled low.
Smallest Possible Size: SOT-23 and micro SMD packages
use absolute minimum board space.
Precision Output: 1.0% tolerance output voltages available
(A grade).
Low Noise: By adding an external bypass capacitor, output
noise can be reduced to 30 µV (typical).
Ten output voltage versions, from 2.5V to 5.0V, are available
as standard products.
Features
n Ultra low dropout voltage
n Guaranteed 50 mA output current
n Typical dropout voltage 180 mV @ 80 mA
n Smallest possible size (SOT-23, micro SMD package)
n Requires minimum external components
n < 1 µA quiescent current when shutdown
n Low ground pin current at all loads
n Output voltage accuracy 1.0% (A Grade)
n High peak current capability (150 mA typical)
n Wide supply voltage range (16V max)
n Low Z_OUT 0.3Ω typical (10 Hz to 1 MHz)
n Overtemperature/overcurrent 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 Assistant (PDA)
n Camcorder, Personal Stereo, Camera
Block Diagram
DS012679-1
VIP™ is a trademark of National Semiconductor Corporation.
© 2000 National Semiconductor Corporation DS012679
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