2.2 PF

SHDN

GND

IN

OUT

FAULT

100

k

Ÿ

2.2 PF

CERAMIC

CC

33 nF

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Design

LP3982

SNVS185E – FEBRUARY 2002 – REVISED OCTOBER 2015

LP3982 Micropower, Ultra-Low-Dropout, Low-Noise, 300-mA CMOS Regulator

1 Features

3 Description

The

LP3982

low-dropout

(LDO)

CMOS

linear

1

•

2.5-V to 6-V Input Range

regulator is available in 1.8-V, 2.5-V, 2.82-V, 3-V,

•

MAX8860 Pin, Package, and Specification

3.3-V, and adjustable versions. They deliver 300 mA

Compatible

of output current. Packaged in an 8-pin VSSOP, the

•

300-mA Output Current

LP3982 is pin- and package-compatible with Maxim's

MAX8860. The LM3982 is also available in the small

•

120-mV Typical Dropout at 300 mA

footprint WSON package.

•

90-

μA Typical Quiescent Current

The

LP3982

suits

battery-powered

applications

•

1-nA Typical Shutdown Mode

because of its shutdown mode (1 nA typical), low

•

60-dB Typical PSRR

quiescent current (90

μA typical), and LDO voltage

•

120-

μs Typical Turnon Time

(120 mV typical). The low dropout voltage allows for

more utilization of a battery’s available energy by

•

Stable with Small Ceramic Output Capacitors

operating closer to its end-of-life voltage. The LP3982

•

37-

device's PMOS output transistor consumes relatively

(10 Hz to 100 kHz)

no drive current compared to PNP LDO regulators.

•

Overtemperature/Overcurrent Protection

This PMOS regulator is stable with small ceramic

•

±2% Output Voltage Tolerance

capacitive loads (2.2

μF typical).

These devices also include regulation fault detection,

2 Applications

a

bandgap

voltage

reference,

constant

current

•

Wireless Handsets

limiting, and thermal-overload protection.

•

DSP Core Power

Device Information(1)

•

Battery Powered Electronics

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Portable Information Appliances

WSON (8)

2.50 mm × 3.00 mm

LP3982

VSSOP (8)

3.00 mm × 3.00 mm

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

the end of the data sheet.

1

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.