LP38693

SNS

**

GND

1 PF

*

1 PF

*

LP38691

SNS

**

GND

1 PF

*

1 PF

*

LP38691, LP38693

www.ti.com

SNVS321K – JANUARY 2005 – REVISED APRIL 2013

LP38691

LP38693 500mA Low Dropout CMOS Linear Regulators

Stable with Ceramic Output Capacitors

Check for Samples: LP38691, LP38693

1

FEATURES

DESCRIPTION

The LP38691/3 low dropout CMOS linear regulators

2

•

All WSON Options are Available as AEC-Q100

provide

tight

output

tolerance

(2.0%

typical),

Grade 1

extremely low dropout voltage (250 mV @ 500mA

•

2.0% Output Accuracy (25°C)

load

current,

•

Low Dropout Voltage: 250 mV @ 500mA (typ,

performance utilizing ultra low ESR ceramic output

capacitors.

5V out)

•

Wide Input Voltage Range (2.7V to 10V)

The low thermal resistance of the WSON, SOT-223

and PFM packages allow the full operating current to

•

Precision (Trimmed) Bandgap Reference

be

used

even

in

high

ambient

temperature

•

Ensured Specs for -40°C to +125°C

environments.

•

1µA Off-State Quiescent Current

The use of a PMOS power transistor means that no

•

Thermal Overload Protection

DC base drive current is required to bias it allowing

•

Foldback Current Limiting

ground

pin

current

to

remain

below

100

µA

regardless of load current, input voltage, or operating

•

PFM, SOT-223 and 6-Lead WSON Packages

temperature.

•

Enable Pin (LP38693)

Dropout Voltage: 250 mV (typ) @ 500mA (typ. 5V

out).

APPLICATIONS

•

Hard Disk Drives

Ground Pin Current: 55 µA (typ) at full load.

•

Notebook Computers

Precision Output Voltage: 2.0% (25°C) accuracy.

•

Battery Powered Devices

•

Portable Instrumentation

Typical Application Circuits

* Minimum value required for stability.

**WSON package devices only.

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 © 2005–2013, 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.