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LP2987AIMMX-3.8 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LP2987AIMMX-3.8
Description  Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988)
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LP2987AIMMX-3.8 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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LP2987/LP2988
Micropower, 200 mA Ultra Low-Dropout Voltage
Regulator with Programmable Power-On Reset Delay;
Low Noise Version Available (LP2988)
General Description
The LP2987/8 are fixed-output 200 mA precision LDO volt-
age regulators with power-ON reset delay which can be
implemented using a single external capacitor.
The LP2988 is specifically designed for noise-critical appli-
cations. A single external capacitor connected to the Bypass
pin reduces regulator output noise.
Using an optimized VIP(Vertically Integrated PNP) pro-
cess, these regulators deliver superior performance:
Dropout Voltage: 180 mV @ 200 mA load, and 1 mV @ 1mA
load (typical).
Ground Pin Current: 1mA @ 200 mA load, and 200 µA @
10 mA load (typical).
Sleep Mode: The LP2987/8 draws less than 2 µA quiescent
current when shutdown pin is held low.
Error Flag/Reset: The error flag goes low when the output
drops approximately 5% below nominal. This pin also pro-
vides a power-ON reset signal if a capacitor is connected to
the DELAY pin.
Precision Output: Standard product versions of the LP2987
and LP2988 are available with output voltages of 5.0V, 3.8V,
3.3V, 3.2V, 3.0V, or 2.8V, with guaranteed accuracy of 0.5%
(“A” grade) and 1% (standard grade) at room temperature.
Features
n
Ultra low dropout voltage
n
Power-ON reset delay requires only one component
n
Bypass pin for reduced output noise (LP2988)
n
Guaranteed continuous output current 200 mA
n
Guaranteed peak output current > 250 mA
n
SO-8 and mini SO-8 surface mount packages
n <
2 µA quiescent current when shutdown
n
Low ground pin current at all loads
n
0.5% output voltage accuracy (“A” grade)
n
Wide supply voltage range (16V max)
n
Overtemperature/overcurrent protection
n
−40˚C to +125˚C junction temperature range
Applications
n
Cellular Phone
n
Palmtop/Laptop Computer
n
Camcorder, Personal Stereo, Camera
Block Diagrams
10001701
10001702
VIPis a trademark of National Semiconductor Corporation.
February 2002
© 2002 National Semiconductor Corporation
DS100017
www.national.com


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