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LP2952-N, LP2952A, LP2953, LP2953A

SNVS095F – MAY 2004 – REVISED MARCH 2015

LP295x Adjustable Micropower Low-Dropout Voltage Regulators

1 Features

3 Description

The LP2952 and LP2953 are micropower voltage

1

•

2.3-V to 30-V Input Voltage Range

regulators with very low quiescent current (130

μA

•

Output Voltage Adjusts from 1.23 V to 29 V

typical at 1-mA load) and very low dropout voltage

•

250-mA Output Current

(typically 60 mV at light load and 470 mV at 250-mA

load current). They are ideally suited for battery-

•

Extremely Low Quiescent Current

powered systems. Furthermore, the quiescent current

•

Low Dropout Voltage

increases only slightly at dropout, which prolongs

•

Extremely Tight Line and Load Regulation

battery life.

•

Very Low Temperature Coefficient

The LP2952 and LP2953 retain all the desirable

•

Current and Thermal Limiting

characteristics of the LP2951, but offer increased

output current, additional features, and an improved

•

Reverse Battery-Input Protection

shutdown function.

•

50-mA (Typical) Automatic Output Discharge

The automatic output discharge pulls the output down

•

LP2953 Versions Only

quickly when the shutdown is activated.

–

Auxiliary Comparator Included With CMOS-

and TTL-Compatible Output Levels. Can Be

The error flag goes low if the output voltage drops out

of regulation.

Used for Fault Detection, Low-Input Line

Detection, and so on.

Reverse battery-input protection is provided.

The internal voltage reference is made available for

2 Applications

external use, providing a low temperature coefficient

•

High-Efficiency Linear Regulator

(20 ppm/°C) reference with very good line (0.03%)

and load (0.04%) regulation.

•

Regulator With Undervoltage Shutdown

•

Low-Dropout Battery-Powered Regulator

Device Information(1)

•

Snap-ON/Snap-OFF Regulator

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LP2952x

SOIC (16)

9.90 mm × 3.91 mm

SOIC (16)

9.90 mm × 3.91 mm

LP2953x

PDIP (16)

21.755 mm × 6.35 mm

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

the end of the data sheet.

Typical Application Schematic

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.