LTC1735CS datasheet(32/32 Pages) LINER

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LTC1735

1735fc

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com

©LINEAR TECHNOLOGY CORPORATION 1998

LT/TP 0104 REV C 1K • PRINTED IN USA

TYPICAL APPLICATIO

3.3V to 2.5V/5A Converter with External Clock Synchronization Operating at 500kHz

COSC

RUN/SS

ITH

FCB

SGND

VOSENSE

SENSE–

SENSE+

BOOST

VIN

INTVCC

PGND

EXTVCC

LTC1735

CSS

0.1

µF

0.1

µF

0.1

µF

CC2

51pF

47pF

330pF

33k

RSENSE

0.01

Ω

VOUT

2.5V

1000pF

COSC

20pF

4.7

µF

COUT

100

µF

10V

AVX

×3

Si4410DY

47pF

1735 TA06

CIN

100

µF

10V

OS-CON

CMDSH-3

43.2k

CIN: SANYO OS-CON 10SL100M

COUT: AVX TPSD107M010R0065

L1: COILCRAFT DO3316P-152

RSENSE: IRC LR2010-01-R010-F

20k

MBRS140T3

VIN

3.3V

1.5

µH

SGND

EXT

CLOCK

500kHz

PART NUMBER

DESCRIPTION

COMMENTS

LTC1530

High Power Step-Down Synchronous DC/DC Controller

High Efficiency 5V to 3.3V Conversion at Up to 15A

in SO-8

LTC1628/LTC3728

2-Phase, Dual Output Synchronous Step-Down

Reduces CIN and COUT, Power Good Output Signal, Synchronizable,

DC/DC Controllers

3.5V

≤ VIN ≤ 36V, IOUT up to 20A, 0.8V ≤ VOUT ≤ 5V

LTC1629/LTC3729

20A to 200A PolyPhase Synchronous Controllers

Expandable from 2-Phase to 12-Phase, Uses All

Surface Mount Components, No Heat Sink, VIN up to 36V

LTC1702

No RSENSE

TM 2-Phase Dual Synchronous Step-Down

550kHz, No Sense Resistor

Controller

LTC1708-PG

2-Phase, Dual Synchronous Controller with Mobile VID

3.5V

≤ VIN ≤ 36V, VID Sets VOUT1, PGOOD

LTC1736

High Efficiency Synchronous Controller with 5-Bit Mobile Output Fault Protection, 24-Pin SSOP,

VID Control

3.5V

≤ VIN ≤ 36V

LTC1778

No RSENSE Current Mode Synchronous Step-Down

Up to 97% Efficiency, 4V

≤ VIN ≤ 36V, 0.8V ≤ VOUT ≤ (0.9)(VIN),

Controller

IOUT up to 20A

LTC1929/

2-Phase Synchronous Controllers

Up to 42A, Uses All Surface Mount Components,

LTC1929-PG

No Heat Sinks, 3.5V

≤ VIN ≤ 36V

LTC3711

No RSENSE Current Mode Synchronous Step-Down

Up to 97% Efficiency, Ideal for Pentium

® III Processors,

Controller with Digital 5-Bit Interface

0.925V

≤ VOUT ≤ 2V, 4V ≤ VIN ≤ 36V, IOUT up to 20A

LTC3729

20A to 200A, 550kHz PolyPhase Synchronous Controller

Expandable from 2-Phase to 12-Phase, Uses all Surface Mount

Components, VIN up to 36V

LTC3730

IMVP III 3-Phase Synchronous Controller

IOUT Up to 60A, 0.6V ≤ VOUT ≤ 1.75V, Integrated MOSFET Drivers

LTC3732

VRM 9.0/9.1 3-Phase DC/DC Synchronous Step-Down

1.1V

≤ VOUT ≤ 1.85V, 4.5V ≤ VIN ≤ 32V, SSOP-36

Controller

LTC3778

Optional RSENSE Current Mode Synchronous Step-Down

≤ VIN ≤ 36V, Adjustable Frequency Up to 1.2MHz, TSSOP-20

Controller

LTC3832

Low VIN High Power Synchronous Controller

VOUT ≥ 0.6V, IOUT ≤ 20A, 3V ≤ VIN ≤ 8V

LTC4008

4A Multichemistry Multicell Battery Charger

NiCd, NiMH, Lead Acid, Li-Ion Batteries; 6V

≤ VIN ≤ 28V;

1.19V

≤ VOUT ≤ 28V

No RSENSE is a trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.

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