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LP3855-ADJ Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LP3855-ADJ
Description  1.5A Fast Response Ultra Low Dropout Linear Regulators
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LP3855-ADJ Datasheet(HTML) 1 Page - National Semiconductor (TI)

 
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LP3855-ADJ
1.5A Fast Response Ultra Low Dropout Linear
Regulators
General Description
The LP3855-ADJ fast ultra low-dropout linear regulators op-
erate from a +2.5V to +7.0V input supply. These ultra low
dropout linear regulators respond very quickly to step
changes in load, which makes them suitable for low voltage
microprocessor applications. The LP3855-ADJ is developed
on a CMOS process which allows low quiescent current
operation independent of output load current. This CMOS
process also allows the LP3855-ADJ to operate under ex-
tremely low dropout conditions.
Dropout Voltage: Ultra low dropout voltage; typically 24mV
at 150mA load current and 240mV at 1.5A load current.
Ground Pin Current: Typically 4mA at 1.5A load current.
Shutdown Mode: Typically 10nA quiescent current when
the shutdown pin is pulled low.
Adjustable Output Voltage: The output voltage may be
programmed via two external resistors.
Features
n
Ultra low dropout voltage
n
Stable with selected ceramic capacitors
n
Low ground pin current
n
Load regulation of 0.06%
n
10nA quiescent current in shutdown mode
n
Guaranteed output current of 1.5A DC
n
Available in TO-263, TO-220 and SOT-223 packages
n
Overtemperature/overcurrent protection
n
−40˚C to +125˚C junction temperature range
Applications
n
Microprocessor power supplies
n
GTL, GTL+, BTL, and SSTL bus terminators
n
Power supplies for DSPs
n
SCSI terminator
n
Post regulators
n
High efficiency linear regulators
n
Battery chargers
n
Other battery powered applications
Typical Application Circuit
20074334
**See Application Hints.
September 2006
© 2006 National Semiconductor Corporation
DS200743
www.national.com


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