Texas Instruments LP2992 Handleiding

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LP2992 Micropower, 250mA, Low-Noise, Ultra-Low-Dropout Regulator in SOT-23 and

WSON Packages Designed for Use With Very Low-ESR Output Capacitors

1 Features

•V

IN

range (new chip): 2.5V to 16V

•V

OUT

range (new chip):

–1.2V to 5.0V (fixed, 100mV steps)

•V

OUT

accuracy:

–±1% for A-grade legacy chip

–±1.5% for standard-grade legacy chip

–±0.5% for new chip

•±1% output accuracy over load, and temperature

(new chip)

•Output current: Up to 250mA

•Low I

Q

(new chip): 69μA at I

LOAD

= 0mA

•Low I

Q

(new chip): 875μA at I

LOAD

= 250mA

•Shutdown current:

–0.01μA (typ, legacy chip)

–1.12μA (typ, new chip)

•Low noise: 30μV

RMS

with 10nF bypass capacitor

•Output current limiting and thermal protection

•Stable with 2.2µF ceramic capacitors

•High PSRR: 70dB at 1kHz, 40dB at 1MHz

•Operating junction temperature: –40°C to +125°C

•Package: 5-pin SOT-23 (DBV)

2 Applications

•Washers and dryers

•Land mobile radios

•Active antenna system mMIMO

•Cordless power tools

•Motor drives and control boards

3 Description

The LP2992 is a fixed-output, wide-input, low-noise,

low-dropout voltage regulator supporting an input

voltage range from 2.5V to 16V and up to 250mA of

load current. The LP2992 supports an output range of

1.2V to 5.0V (new chip).

Additionally, the LP2992 (new chip) has a 1% output

accuracy across load, and temperature that can meet

the needs of low-voltage microcontrollers (MCUs) and

processors.

Low output noise of 30µV

RMS

(with 10nF bypass

capacitors) and wide bandwidth PSRR performance

of greater than 70dB at 1kHz and 40dB at 1MHz

help attenuate the switching frequency of an upstream

DC/DC converter and minimize post regulator filtering.

The internal soft-start time and current limit protection

reduce inrush current during start up, thus minimizing

input capacitance. Standard protection features, such

as overcurrent and overtemperature protection, are

included.

The LP2992 is available in a 5-pin 2.9mm × 2.8mm

SOT-23 (DBV) package.

Package Information

PART NUMBERPACKAGE

(1)

PACKAGE SIZE

(2)

LP2992

DBV (SOT-23, 5)2.9mm × 2.8mm

NGD (WSON, 6)2.92mm × 3.29mm

(1)For more information, see the Mechanical, Packaging, and

Orderable Information.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

TEMPERATURE(C)

V

DROP

(mV)

-75-50-250255075100125150

0

50

100

150

200

250

300

350

1mA

50mA

150mA

250mA

Dropout Voltage vs Temperature for New Chip

INOUT

ON/

OFF

LP2992

GND

C

IN

GND

GND

C

OUT

GND

V

IN

V

OUT

BYPASS

GND

C

BYPASS

Typical Application Circuit

LP2992

SNVS171L – NOVEMBER 2001 – REVISED FEBRUARY 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Product specificaties