OUT

IN

GND

LP38511-ADJ

EN

10 PF

Ceramic

10 PF

Ceramic

GND

GND

ON

OFF

ADJ

R1

R2

LP38511-ADJ

www.ti.com

SNVS545D – JANUARY 2009 – REVISED APRIL 2013

LP38511-ADJ 800mA Fast-Transient Response Adjustable Low-Dropout Linear Voltage

Regulator

Check for Samples: LP38511-ADJ

1

FEATURES

APPLICATIONS

2

•

2.25V to 5.5V Input Voltage Range

•

Digital Core ASICs, FPGAs, and DSPs

•

Adjustable Output Voltage Range of 0.5V to

•

Servers

3.3V

•

Routers and Switches

•

800mA Output Load Current

•

Base Stations

•

±2.0% Accuracy over Line, Load, and Full-

•

Storage Area Networks

Temperature Range from -40°C to +125°C

•

DDR2 Memory

•

Stable with Tiny 10 uF Ceramic Capacitors

DESCRIPTION

•

Enable Pin

The LP38511-ADJ Fast-Transient Response Low-

Dropout

Voltage

Regulator

offers

the

highest-

•

Typically Less than 1uA of Ground Pin Current

performance in meeting AC and DC accuracy

with Enable Pin Low

requirements

for

powering

Digital

Cores.

The

•

25dB of PSRR at 100 kHz

LP38511-ADJ uses a proprietary control loop that

•

Over-Temperature and Over-Current

enables extremely fast response to change in line

Protection

conditions and load demands. Output Voltage DC

accuracy is specified at 2.5% over line, load and full

•

8-Pin SO PowerPad and 5-Pin PFM Surface

temperature range from -40°C to +125°C. The

Mount Packages

LP38511-ADJ is designed for inputs from the 2.5V,

3.3V, and 5.0V rail, is stable with 10 uF ceramic

capacitors, and has an adjustable output voltage. The

LP38511-ADJ

provides

excellent

transient

performance

to

meet

the

demand

of

high

performance digital core ASICs, DSPs, and FPGAs

found in highly-intensive applications such as servers,

routers/switches, and base stations.

Typical Application Circuit

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

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

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009–2013, 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.