LP295102BM Micrel Semiconductor, LP295102BM Datasheet

LP295102BM

Manufacturer Part Number

LP295102BM

Description

SOP8

Manufacturer

Micrel Semiconductor

Datasheet

1.LP295102BM.pdf (14 pages)

Specifications of LP295102BM

Date_code

05+

Current page: 1 of 14
Download datasheet (136Kb)

LP2950/2951

General Description

The LP2950 and LP2951 are micropower voltage regulators

with very low dropout voltage (typically 40mV at light loads

and 380mV at 100mA), and very low quiescent current (75 A

typical).

increases only slightly in dropout, thus prolonging battery life.

This feature, among others, makes the LP2950 and LP2951

ideally suited for use in battery-powered systems.

Available in a 3-Pin TO-92 package, the LP2950 is pin-

compatible with the older 5V regulators. Additional system

functions, such as programmable output voltage and logic-

controlled shutdown, are available in the 8-pin DIP and 8-pin

SOIC versions of the LP2951.

Applications

•

Block Diagram and Pin Configurations

February 1999

See MIC2950 for a part with 1) higher output (150 mA), 2) transient protection (60V), and 3) reverse input protection to –20V)

Automotive Electronics

Voltage Reference

Avionics

The quiescent current of the LP2950/LP2951

TO-92 Plastic Package Bottom View

OR TTL

OUTPUT

FROM

CMOS

GROUND

3 2 1

UNREGULATED DC

(BZ)

DOWN

SHUT-

INPUT

FEEDBACK

1.23 V

REF.

60 mV

LP2950 and LP2951 Block Diagram

(Pin Numbers Refer to LP2951)

INPUT

–

COMPARATOR

AMPLIFIER

3-35

DETECTION

ERROR

Features

•

LP2951 Versions Only

•

High accuracy 5V, guaranteed 100 mA output

Extremely low quiescent current

Low-dropout voltage

Extremely tight load and line regulation

Very low temperature coefficient

Use as regulator or reference

Needs only 1 F for stability

Current and thermal limiting

Error flag warns of output dropout

Logic-controlled electronic shutdown

Output programmable from 1.24 to 29V

100mA Low-Dropout Voltage Regulator

OUTPUT

SHUTDOWN

182

GROUND

OUTPUT

SENSE

GROUND

DIP and SO Packages

ERROR

LP2950/2951

SENSE

5V TAP

(BN and BM)

1.5 µF

150 mA

MAX.

INPUT

FEEDBACK

5V TAP

ERROR

330

TO CMOS

OR TTL

Micrel

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