Frequency (Hz)

10 20

100

1000

10000

100000 1000000

1E+7

-100

-80

-60

-40

-20

0

D014

OUT

PG

2.5 V

EN

LP5922

1.8 V

IN

GND

FB

SS/NR

IN

OUT

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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.

LP5922

SNVSAG0 – NOVEMBER 2016

LP5922 2-A Low-Noise, Adjustable LDO With Low Input- and Output-Voltage Capability

1

1 Features

1

•

Wide Input Voltage Range: 1.3 V to 6 V

•

•

Adjustable Output Voltage: 0.5 V to 5 V

•

Low Dropout: 200 mV at 2-A Load

•

•

Output Current: 2 A

•

–40

˚C to +125°C Operating Junction Temperature

•

Programmable Soft Start Limits Inrush Current

•

3-mm × 3-mm × 0.75-mm 10-Pin WSON Package

•

Thermal-Overload and Short-Circuit Protection

•

Output Voltage Tolerance: ±1.5%

•

Shutdown Supply Current : 0.1 μA

•

PSRR: 70 dB at 1 kHz

•

Power Good Output

2 Applications

•

Space-Constrained Applications

•

Noise- and Ripple-Sensitive High Current Analog

or RF Systems

•

Target Sectors

–

Medical, Test and Measurement Equipment

–

Portable and Consumer electronics

–

Telecom and Networking Cards

–

Wireless Infrastructure

–

Industrial Applications

•

Typical Systems

–

Radio Transceivers, Power Amplifiers,

PLL/Synthesizer, Clocking, VCO, GPRS, 3G

Modules, FPGAs, DSP, GPUs, and others

3 Description

The LP5922 is 2-A low dropout (LDO) linear regulator

with 200-mV typical dropout voltage at maximum

current levels. The LP5922 device can operate from a

voltage rail down to 1.3 V without additional bias

supply. System efficiency is maximized and power

capability. The device also features low quiescent

current and very low shutdown current.

The LP5922 device was designed to have high PSRR

and low output noise to support sensitive analog

applications without additional filtering. The output

noise can be reduced even further by implementing a

small capacitor on the SS/NR pin.

The output voltage is adjustable from 0.5 V to 5 V by

an external resistor divider. Enable pin, adjustable

soft start and optional Power Good features help with

system

power

sequencing.

Inrush

current

is

controlled with the soft start and the device has short

circuit and thermal protections.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LP5922

WSON (10)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

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Simplified Schematic

PSRR