LP38853

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SNVS335D – DECEMBER 2006 – REVISED APRIL 2013

LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable

and Soft-Start

Check for Samples: LP38853

1

FEATURES

DESCRIPTION

The LP38853-ADJ is a high current, fast response

2

•

regulator

which

can

maintain

output

voltage

•

regulation with extremely low input to output voltage

5.5V

drop. Fabricated on a CMOS process, the device

•

Stable with 10µF Ceramic Capacitors

voltage to drive the gate of the N-MOS power

•

Dropout Voltage of 240 mV (typical) at 3A Load

Current

supplies power to the load. The use of an external

•

Conditions:

voltages.

Unlike

bipolar

regulators,

the

CMOS

architecture

consumes

extremely

low

quiescent

–

current at any output load current. The use of an N-

–

MOS power transistor results in wide bandwidth, yet

–

minimum external capacitance is required to maintain

•

Over-Temperature and Over-Current

loop stability.

Protection

The fast transient response of this device makes it

•

Available in 8 Lead SO PowerPAD, 7 Lead PFM

suitable for use in powering DSP, Microcontroller

and 7 Lead DDPAK Packages

Core voltages and Switch Mode Power Supply post

regulators. The part is available in SO PowerPAD

•

−40°C to +125°C Operating Junction

8–pin, PFM 7–pin, and DDPAK 7-pin packages.

Temperature Range

Dropout Voltage: 240 mV (typical) at 3A load

APPLICATIONS

current.

•

ASIC Power Supplies in:

Low Ground Pin Current: 10 mA (typical) at 3A load

current.

–

Desktops, Notebooks, and Graphics Cards,

Servers

Soft-Start: Programmable Soft-Start time.

–

Gaming Set Top Boxes, Printers and

Copiers

±2.0% for 0°C

•

Server Core and I/O Supplies

conditions

•

DSP and FPGA Power Supplies

•

SMPS Post-Regulator

1

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.