LT1317B 查看數據表（PDF） - Linear Technology

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LT1317B

Micropower, 600kHz PWM DC/DC Converters

Linear Technology 

LT1317/LT1317B

TYPICAL APPLICATION

Digital Camera Power Supply

10k

4 AA

CELLS

(3.2V TO

6.5V)

SHUTDOWN

24V

+ C1

22µF

10V

T1 7

LC

8

5

LB

6

LPRI:15µH 2

3

LA

1

4

D3

D2

D1

+

18V

+ C5

3mA

10µF

35V

+ C4

22µF

10V

5V

20mA

C2

100µF

6V

3.3V

150mA

C3

1µF, 16V

VIN

SW

LT1317

1M

SHDN

FB

VC

GND

10k

604k

3300pF

1317 TA10

C1, C4: AVX TPSC226M016

C2: AVX TPSC106M006

C3: CERAMIC (i.e. AVX, MANY OTHERS)

C5: SANYO 35CV10GX

D1, D2: MBR0520LT1 (MOTOROLA) OR EQUIVALENT

D3: MMBD914LT1 (MOTOROLA) OR EQUIVALENT

T1: COILTRONICS CTX02-14272-X1

RELATED PARTS

PART NUMBER

LTC®1163

LTC1174

LT1302

LT1304

LT1307

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

Single Cell Micropower 600kHz PWM DC/DC Converter

Ultralow Power Single/Dual Comparators 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

3.3V at 75mA from 1 Cell, MSOP Package

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 www.linear-tech.com

13177bf LT/TP 1198 4K • PRINTED IN THE USA

© LINEAR TECHNOLOGY CORPORATION 1998

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