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LT1500

Adaptive-Frequency Current Mode Switching Regulators

Linear Technology 

LT1500/LT1501

TYPICAL APPLICATION

2 EACH

NiCd OR

ALKALINE

CELLS

Typical LT1500 (14-Pin) Application, 2-Cell to 5V Converter

33µH MBR0520L

5V

249k

IN

ON(HI)

OFF (LO)

SHDN

LBI

+

5V

ISENSE

SW

OUT

+ 220µF

10V

LT1500-3.3/LT1501-5

470k

LBO

TO

SYSTEM

SYNC

SS

SELECT

GND PGND COMP

402k

1nF

1M

0.22µF

100k

1000pF

LT1500/01 • TA02

RELATED PARTS

PART NUMBER

LTC®1163

LTC1174

LT1302

LT1304

LTC1440/1/2

LTC1516

LT1521

DESCRIPTION

Triple High Side Driver for 2-Cell Inputs

Micropower Step-Down DC/DC Converter

High Output Current Micropower DC/DC Converter

2-Cell Micropower DC/DC Converter

Ultralow Power Single/Dual Comparator with Reference

2-Cell to 5V Regulated Charge Pump

Micropower Low Dropout Linear Regulator

COMMENTS

1.8V Minimum Input, Drives N-Channel MOSFETs

94% Efficiency, 130µA IQ, 9V to 5V at 300mA

5V/600mA from 2V, 2A Internal Switch, 200µA IQ

Low-Battery Detector Active in Shutdown

2.8µA IQ, Adjustable Hysteresis

12µA IQ, No Inductors, 5V at 50mA from 3V Input

500mV Dropout, 300mA Current, 12µA IQ

16 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977

LT/GP 0896 7K • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 1996

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