LT3782AIUFD datasheet(20/20 Pages) LINER

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LT3782A

3782af

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

LT 1208 • PRINTED IN USA

RELATED PARTS

PART NUMBER

DESCRIPTION

COMMENTS

LT®1619

Current Mode PWM Controller

300kHz Fixed Frequency, Boost, SEPIC, Flyback Topology

LTC1624

Current Mode DC/DC Controller

SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design; VIN Up to 36V

LTC1696

Overvoltage Protection Controller

0.8V ≤ VIN ≤ 24V, ±2% Overvoltage Threshold Accuracy, ThinSOT™ Package

LTC1700

No RSENSE™ Synchronous Step-Up Controller

Up to 95% Efﬁciency, Operation as Low as 0.9V Input

LTC1871/LTC1871-7

Wide Input Range Controller

No RSENSE, 7V Gate Drive, Current Mode Control

LT1930

1.2MHz, SOT-23 Boost Converter

Up to 34V Output, 2.6V ≤ VIN ≤ 16V, Miniature Design

LT1952

Single Switch Synchronous Forward Controller

High Efﬁciency, 25W to 500W, Wide Input Range, Adaptive Duty Cycle Clamp

LTC3425

5A, 8MHz 4-Phase Monolithic Step-Up DC/DC

Converter

0.5V ≤ VIN ≤ 4.5V, 2.4V ≤ VOUT ≤ 5.25V, Very Low Output Ripple

LTC3703/LTC3703-5

100V and 60V, Step-Down and Step-Up DC/DC

Synchronous Controller

High Efﬁciency Synchronous Operation, High Voltage Operation,

No Transformer Required

LTC3729L-6

20A to 200A, 250kHz to 550kHz PolyPhase®

Synchronous Controller

Expandable from 2-Phase to 12-Phase, Uses All Surface Mount Components,

VIN Up to 30V

LTC3731

3-Phase to 12-Phase Synchronous Controller

60A to 240A Output Current, 0.6V ≤ VOUT ≤ 6V, 4.5V ≤ VIN ≤ 32V

LT3782

2-Phase Step-Up DC/DC Controller

Pin Compatible with LT3782A

LTC3803

SOT-23 Flyback Controller

Adjustable Slope Compensation, Internal Soft-Start

LTC3806

Synchronous Flyback Controller

High Efﬁciency, Improves Cross Regulation in Multiple Output Designs,

Current Mode, 3mm × 4mm 12-Pin DFN Package

LTC3850

Dual, 250kHz to 750kHz, 2-Phase Synchronous

Step-Down Controller

VIN: 4V to 30V, 99% Duty Cycle, 4mm × 4mm QFN, 4mm × 5mm QFN and

SSOP-28 Packages

LTC3862/LTC3862-1

Multiphase High Power Current Mode Step-Up

Controller

4V ≤ VIN ≤ 36V Expandable from 2-Phase to 12-Phase

28V Output Base Station Power Converter with Redundant Input

PolyPhase is a registered trademark of Linear Technology Corporation. ThinSOT and No RSENSE are trademarks of Linear Technology Corporation.

TYPICAL APPLICATION

10Ω

CS2

COUT2

330μF, 35V, ×2

BAS516

10Ω

CS1

59k

82k

274k

825k

2R2

24.9k

261k

RC1

15k

10nF

CINA

22μF

CINB

22μF

4.7nF

CC2

100pF

CC1

4.7nF

2.2μF

COUT1

10μF, 50V, ×4

10nF

BAS516

1μF

3782A TA03

VINB

0V TO 28V*

VINA

0V TO 28V*

PH4840S

OUTPUT

28V

4A (8A**)

NOTE:

*INPUT VOLTAGE RANGE FOR VINA AND VINB IS 0V TO 28V.

AT LEAST ONE OF THE INPUTS MUST BE 12V OR HIGHER.

L1, L2: PULSE PB2020-103

ALL CERAMIC CAPACITORS ARE X7R, TDK

**OUTPUT CURRENT WITH BOTH INPUTS 12V OR HIGHER

10μH

UPS840

10μH

UPS840

CS1

CS2

0.004Ω

LT3782A

VCC

VEE1

BGATE1

GBIAS1

GBIAS2

BGATE2

VEE2

RUN

GBIAS

SGATE1

GND

SYNC

DELAY

DCL

SENSE1+

SENSE1–

SLOPE

RSET

SENSE2–

SENSE2+

SGATE2

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