LP38500ASD-ADJ NSC [National Semiconductor], LP38500ASD-ADJ Datasheet

LP38500ASD-ADJ

Manufacturer Part Number

LP38500ASD-ADJ

Description

1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs

Manufacturer

NSC [National Semiconductor]

Datasheet

1.LP38500ASD-ADJ.pdf (16 pages)

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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%

ture.

Typical Application Circuit

ADJ

tolerance (25°C) and 3% over line, load and tempera-

300361

Features

■

Applications

■

FlexCap: Stable with ceramic, tantalum, or aluminum

capacitors

Stable with 10 µF 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

Guaranteed accuracy of ±3.5% @ 25°C (STD)

Over-Temperature and Over-Current protection

−40°C to +125°C operating T

Enable pin (LP38502)

ASIC Power Supplies In:

DSP and FPGA Power Supplies

SMPS Regulator

Conversion from 3.3V or 5V Rail

Printers, Graphics Cards, DVD Players

Set Top Boxes, Copiers, Routers

ADJ

accuracy of ±1.5% @ 25°C (A Grade)

30036119

range

www.national.com

May 19, 2008

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