LP3875-ADJ

ADJ

GND

10 PF

10 PF

Tantalum

INPUT

OUTPUT

1.5A

R1*

R2*

*

*

R1

R2

)

SD

SD

LP3875-ADJ

www.ti.com

SNVS247D – SEPTEMBER 2003 – REVISED APRIL 2013

LP3875-ADJ 1.5A Fast Ultra Low Dropout Linear Regulators

Check for Samples: LP3875-ADJ

1

FEATURES

DESCRIPTION

The

LP3875-ADJ

fast

ultra

low-dropout

linear

2

•

Ultra Low Dropout Voltage

regulators operate from a +2.5V to +7.0V input

•

Low Ground Pin Current

supply. These ultra low dropout linear regulators

•

Load Regulation of 0.06%

respond very quickly to step changes in load, which

makes them suitable for low voltage microprocessor

•

10nA Quiescent Current in Shutdown Mode

applications. The LP3875-ADJ is developed on a

•

Specified Output Current of 1.5A DC

CMOS process which allows low quiescent current

•

Available in DDPAK/TO-263, TO-220 and SOT-

operation independent of output load current. This

223 Packages

CMOS process also allows the LP3875-ADJ to

operate under extremely low dropout conditions.

•

Minimum Output Capacitor Requirements

•

Overtemperature/Overcurrent Protection

Dropout Voltage: Ultra low dropout voltage; typically

38mV at 150mA load current and 380mV at 1.5A load

•

−40°C to +125°C Junction Temperature Range

current.

APPLICATIONS

Ground Pin Current: Typically 6mA at 1.5A load

current.

•

Microprocessor Power Supplies

Shutdown Mode: Typically 10nA quiescent current

•

GTL, GTL+, BTL, and SSTL Bus Terminators

when the shutdown pin is pulled low.

•

Power Supplies for DSPs

Adjustable Output Voltage: The output voltage may

•

SCSI Terminator

be programmed via two external resistors.

•

Post Regulators

•

High Efficiency Linear Regulators

•

Battery Chargers

•

Other Battery Powered Applications

TYPICAL APPLICATION CIRCUIT

*See Application Hints

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 © 2003–2013, 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.