1

2

3

4

5

(C3)

(C1)

(A1)

(A3)

LP3988-Q1

1 F

1 F

POWER

GOOD

(B2)

LP3988-Q1

www.ti.com

SLAS928A – MARCH 2013 – REVISED JULY 2013

Micropower, 150-mA Ultralow-Dropout CMOS Voltage Regulator With Power Good

Check for Samples: LP3988-Q1

1

FEATURES

DESCRIPTION

The LP3988-Q1 is a 150-mA low-dropout regulator

2

•

Qualified for Automotive Applications

designed specially to meet requirements of portable

•

AEC-Q100 Test Guidance With the Following

battery applications. The LP3988-Q1 works with a

Results:

space-saving, 1-µF ceramic capacitor. The LP3988-

–

Device Temperature Grade 1: –40°C to

Q1 features an error flag-output that indicates a faulty

output condition.

125°C Ambient Operating Temperature

Range

The LP3988-Q1 has performance optimized for

–

Device HBM ESD Classification Level H2

battery-powered

systems

to

deliver

low

noise,

extremely low dropout voltage, and low quiescent

–

Device CDM ESD Classification Level C4B

current. Regulator ground current increases only

•

SOT-23-5 Package

slightly in dropout, further prolonging the battery life.

•

Power-Good Flag Output

Power-supply rejection is better than 60 dB at low

•

Logic-Controlled Enable

frequencies and starts to roll off at 10 kHz. The

•

Stable With Ceramic and High Quality

device maintains high power-supply rejection down to

Tantalum Capacitors

lower

input

voltage

levels

common

to

battery-

operated circuits.

•

Fast Turnon

The device is ideal for mobile phone and similar

•

Thermal Shutdown and Short-Circuit Current

battery-powered wireless applications. It provides up

Limit

to 150 mA, from a 2.5-V to 6-V input, consuming less

than 1 µA in disable mode, and has fast turnon time

APPLICATIONS

less than 200 µs.

•

Automotive

The LP3988-Q1 is available in a 5-pin SOT-23

•

CDMA Cellular Handsets

package, has performance specified for the

−40°C to

•

Wideband CDMA Cellular Handsets

125°C temperature range, and is available in 2.85-V

output voltages. Note: For other voltage options,

•

GSM Cellular Handsets

please contact TI sales.

•

Portable Information Appliances

•

Tiny 3.3-V ± 5% to 2.85-V, 150-mA Converter

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 © 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.