Texas Instruments LP2980-N Handleiding

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LP2980-N Micropower, 50mA, Ultra-Low Dropout Regulator in SOT-23 Package

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:

–±0.5% for A-grade legacy chip

–±1% for standard-grade legacy chip

–±0.5% for new chip (A grade and standard

grade)

•Output accuracy over load, and temperature: ±1%

(new chip)

•Output current: Up to 50mA

•Low I

Q

(new chip): 69μA at I

LOAD

= 0mA

•Low I

Q

(new chip): 380μA at I

LOAD

= 50mA

•Shutdown current over temperature:

–0.01μA (typ) for legacy chip

–1.12μA (typ) for new chip

•Output current limiting and thermal protection

•Stable with 2.2µF ceramic capacitors (new chip)

•High PSRR (new chip):

–75dB at 1kHz, 45dB at 1MHz

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

•Package: 5-pin SOT-23 (DBV)

2 Applications

•Residential breakers

•Solid state drives (SSD)

•Electricity meters

•Appliances

•Building automation

3 Description

The LP2980-N is a fixed-output, wide-input, low-

dropout (LDO) voltage regulator supporting an input

voltage range from 2.5V to 16V and up to 50mA of

load current. The LP2980-N supports an output range

of 1.2V to 5.0V (new chip).

Additionally, the LP2980-N (new chip) has a 1%

output accuracy across load and temperature that

can meet the needs of low-voltage microcontrollers

(MCUs) and processors.

In the new chip, wide bandwidth PSRR performance

is 75dB at 1kHz and 45dB at 1MHz to 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 LP2980-N is available in a 5-pin, 2.9mm × 1.6mm

SOT-23 (DBV) package.

Package Information

PART NUMBERPACKAGE

(1)

PACKAGE SIZE

(2)

LP2980-NDBV (SOT-23, 5)2.9mm × 2.8mm

(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.

INOUT

ON/

OFF

LP2980-N

GND

C

IN

GND

GND

C

OUT

GND

V

IN

V

OUT

Typical Application Circuit

Temperature(°C)

Dropout(mV)

-75-50-250255075100125150

0

50

100

150

200

250

1mA10mA50mA

Dropout Voltage vs Temperature (New Chip)

LP2980-N

SNOS733R – APRIL 2000 – 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