LP2985LV
Micropower 150 mA Low-Noise Low-Dropout Regulator
in SOT-23 and micro SMD packages for Applications
with Output Voltages ≤ 2.3V
Designed for Use with Very Low ESR Output Capacitors
General Description
The LP2985LV is a 150 mA, fixed-output voltage regulator
designed to providehigh performance and low noise in ap-
plications requiring output voltages
<
2.3V.
Using an optimized VIP
™
(Vertically Integrated PNP) pro-
cess, the LP2985LV delivers unequalled performance in all
specifications critical to battery-powered designs:
Ground Pin Current: Typically 825 µA
@
150 mA load, and
75 µA
@
1 mA load.
Enhanced Stability: The LP2985LV is stable with output
capacitor ESR as low as 5 mΩ, which allows the use of
ceramic capacitors on the output.
Sleep Mode: Less than 1 µA quiescent current when ON/
OFF pin is pulled low.
Smallest Possible Size: micro SMD package uses absolute
minimum board space.
Precision Output: 1% tolerance output voltages available
(A grade).
Low Noise: By adding a 10 nF bypass capacitor, output
noise can be reduced to 30 µV (typical).
Features
n Guaranteed 150 mA output current
n Smallest possible size (micro SMD)
n Requires minimum external components
n Stable with low-ESR output capacitor
n
<
1 µA quiescent current when shut down
n Low ground pin current at all loads
n Output voltage accuracy 1% (A Grade)
n High peak current capability
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
10129501
VIP
™
is a trademark of National Semiconductor Corporation.
June 2004
LP2985LV Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and micro SMD
packages for Applications with Output Voltages ≤ 2.3V
© 2005 National Semiconductor Corporation DS101295 www.national.com
