LP2989IM-2.5 National Semiconductor, LP2989IM-2.5 Datasheet
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LP2989IM-2.5
Manufacturer Part Number
LP2989IM-2.5
Description
IC,VOLT REGULATOR,FIXED,+2.5V,BIPOLAR,SOP,8PIN,PLASTIC
Manufacturer
National Semiconductor
Datasheets
1.LP2989IM-2.5.pdf
(17 pages)
2.LP2989IM-2.5.pdf
(19 pages)
3.LP2989IM-2.5.pdf
(12 pages)
Specifications of LP2989IM-2.5
Rohs Compliant
NO
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© 2005 National Semiconductor Corporation
LP2989
Micropower/Low Noise, 500 mA Ultra Low-Dropout
Regulator
For Use with Ceramic Output Capacitors
General Description
The LP2989 is a fixed-output 500 mA precision LDO regu-
lator designed for use with ceramic output capacitors.
Output noise can be reduced to 18µV (typical) by connecting
an external 10 nF capacitor to the bypass pin.
Using an optimized VIP
cess, the LP2989 delivers superior performance:
Dropout Voltage: Typically 310 mV
mV
Ground Pin Current: Typically 3 mA
110 µA
Sleep Mode: The LP2989 draws less than 0.8 µA quiescent
current when shutdown pin is pulled low.
Error Flag: The built-in error flag goes low when the output
drops approximately 5% below nominal.
Precision Output: Guaranteed output voltage accuracy is
0.75% (“A” grade) and 1.25% (standard grade) at room
temperature.
For output voltages
Block Diagram
VIP
™
@
is a trademark of National Semiconductor Corporation.
100 µA load.
@
100 µA load.
<
2V, see LP2989LV datasheet.
™
(Vertically Integrated PNP) pro-
@
@
500 mA load, and 1
DS101339
500 mA load, and
Features
n Ultra low dropout voltage
n Guaranteed 500 mA continuous output current
n Very low output noise with external capacitor
n SO-8, Mini SO-8, 8 Lead LLP surface mount packages
n
n Low ground pin current at all loads
n 0.75% output voltage accuracy (“A” grade)
n High peak current capability (800 mA typical)
n Wide supply voltage range (16V max)
n Overtemperature/overcurrent protection
n −40˚C to +125˚C junction temperature range
Applications
n Notebook/Desktop PC
n PDA/Palmtop Computer
n Wireless Communication Terminals
n SMPS Post-Regulator
<
0.8 µA quiescent current when shutdown
10133901
February 2005
www.national.com