VIN

VOUT

GND

TPS7A65xx

0.01

0.1

1

10

100 300

0.01

0.1

1

10

V

= 14V

C

= 10 F, 47 F

T = 27°C

V

= 5V, 3.3V

IN

OUT

A

OUT

µ

µ

Stable Operation

Over Entire Region

I

(mA)

OUT

TPS7A6533-Q1

TPS7A6550-Q1

www.ti.com

SLVSA98C – MAY 2010 – REVISED JULY 2012

300-mA 40-V LOW-DROPOUT REGULATOR WITH 25-µA QUIESCENT CURRENT

Check for Samples: TPS7A6533-Q1, TPS7A6550-Q1

1

FEATURES

DESCRIPTION

The TPS7A65xx-Q1 is a family of low-dropout linear

•

Low Dropout Voltage

voltage

regulators

designed

for

low

power

–

consumption and quiescent current less than 25 µA in

•

4-V to 40-V Wide Input Voltage Range

light-load

applications.

These

devices

feature

With up to 45-V Transients

integrated overcurrent protection and a design to

achieve stable operation even with low-ESR ceramic

•

300-mA Maximum Output Current

output capacitors. A low-voltage tracking feature

•

25-µA (Typ) Ultralow Quiescent Current at

allows for a smaller input capacitor and can possibly

Light Loads

eliminate the need of using a boost converter during

•

3.3-V and 5-V Fixed Output Voltage With ±2%

cold crank conditions. Because of these features,

these devices are well-suited in power supplies for

Tolerance

various automotive applications.

•

Low-ESR Ceramic Output Stability Capacitor

•

Integrated Fault Protection

TYPICAL REGULATOR STABILITY

–

Short-Circuit and Overcurrent Protection

–

Thermal Shutdown

•

Low Input-Voltage Tracking

•

Thermally Enhanced Power Package

–

3-Pin TO-252 (KVU /DPAK)

APPLICATIONS

•

Qualified for Automotive Applications

•

Infotainment Systems With Sleep Mode

•

Body Control Modules

•

Always-On Battery Applications

–

Gateway Applications

–

Remote Keyless Entry Systems

–

Immobilizers

Figure 1. ESR versus Load Current for

TPS7A6550-Q1

TYPICAL APPLICATION SCHEMATIC

Figure 2. Application Schematic

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2010–2012, 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.