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LP38502TJ-ADJ Datasheet

  • LP38502TJ-ADJ

  • 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V I...

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LP38500/2-ADJ, LP38500A/2A-ADJ 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V
Inputs
May 19, 2008
LP38500/2-ADJ, LP38500A/2A-ADJ
1.5A FlexCap Low Dropout Linear Regulator for 2.7V to
5.5V Inputs
General Description
National's FlexCap LDO's feature unique compensation that
allows the use of any type of output capacitor with no limits
on minimum or maximum ESR. The LP38500/2 series of low-
dropout linear regulators operates from a +2.7V to +5.5V 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. Developed on a
CMOS process, (utilizing a PMOS pass transistor), the
LP38500/2 has low quiescent current that changes little with
load current.
Ground Pin Current:
Typically 2 mA at 1.5A load current.
Disable Mode:
Typically 25 nA quiescent current when the
Enable pin is pulled low.
Simplified Compensation:
Stable with any type of output
capacitor, regardless of ESR.
Precision Output:
"A" grade versions available with 1.5%
V
ADJ
tolerance (25擄C) and 3% over line, load and tempera-
ture.
Features
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FlexCap: Stable with ceramic, tantalum, or aluminum
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capacitors
Stable with 10 碌F input/output capacitor
Adjustable output voltage from 0.6V to 5V
Low ground pin current
25 nA quiescent current in shutdown mode
Guaranteed output current of 1.5A
Available in TO-263, TO-263 THIN, and LLP-8 packages
Guaranteed V
ADJ
accuracy of 鹵1.5% @ 25擄C (A Grade)
Guaranteed accuracy of 鹵3.5% @ 25擄C (STD)
Over-Temperature and Over-Current protection
鈭?0擄C to +125擄C operating T
J
range
Enable pin (LP38502)
Applications
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ASIC Power Supplies In:
Printers, Graphics Cards, DVD Players
Set Top Boxes, Copiers, Routers
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DSP and FPGA Power Supplies
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SMPS Regulator
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Conversion from 3.3V or 5V Rail
Typical Application Circuit
30036119
漏 2008 National Semiconductor Corporation
300361
www.national.com

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