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LP38500-ADJ, LP38502-ADJ

SNVS539H – NOVEMBER 2007 – REVISED SEPTEMBER 2015

LP3850x-ADJ, LP3850xA-ADJ 1.5-A Flexcap Low-Dropout Linear Regulator

for 2.7-V to 5.5-V Inputs

1 Features

3 Description

TI's FlexCap low-dropout (LDO) linear regulators

1

•

Input Voltage: 2.7 V to 5.5 V

feature unique compensation that allow use of any

•

Adjustable Output Voltage: 0.6 V to 5 V

type of output capacitor with no limits on minimum or

•

FlexCap: Stable with Ceramic, Tantalum, or

maximum equivalent series resistance (ESR). The

Aluminum Capacitors

LP38500 and LP38502 series of LDOs operates from

a 2.7-V to 5.5-V input supply. These ultra-low-dropout

•

Stable with 10-µF Input and Output Capacitors

linear

regulators

respond

very

quickly

to

step

•

Low Ground-Pin Current

changes in load, making them suitable for low-voltage

•

25-nA Quiescent Current in Shutdown Mode

microprocessor applications. Developed on a CMOS

process (utilizing a PMOS pass transistor) the

•

Ensured Output Current of 1.5 A

LP38500-ADJ and LP38502-ADJ have low quiescent

•

Ensured VADJ Accuracy of ±1.5% at 25°C (A

currents that changes little with load current.

Grade)

•

GND Pin Current: Typically 2 mA at 1.5-A load

•

Ensured Accuracy of ±3.5% at 25°C (STD)

current.

•

Overtemperature and Overcurrent Protection

•

Disable Mode: Typically 25-nA quiescent current

•

ENABLE Pin (LP38502)

when the EN pin is pulled low. (LP38502-ADJ)

•

Simplified Compensation: Stable with any type of

2 Applications

output capacitor, regardless of ESR.

•

Precision Output: A grade versions available with

•

ASIC Power Supplies In:

1.5% VADJ tolerance (25°C) and 3% over line,

–

Printers, Graphics Cards, DVD Players

load, and temperature.

–

Set Top Boxes, Copiers, Routers

Device Information(1)

•

DSP and FPGA Power Supplies

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

SMPS Regulator

DDPAK/TO-263 (5)

10.16 mm x 8.42 mm

•

Conversion from 3.3-V or 5-V Rail

LP38500

TO-263 (5)

10.16 mm x 9.85 mm

LP38502

WSON (8)

3.00 mm x 2.50 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Typical Circuit (LP38500)

Typical Circuit (LP38502)

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.