16

LTC3726

3726fb

RELATED PARTS

©LINEAR TECHNOLOGY CORPORATION 2006

LT 0207 REV B • PRINTED IN THE USA

PART NUMBER

DESCRIPTION

COMMENTS

LT1534

Ultralow Noise 2A Switching Regulator

Reduces Conducted and Radiated EMI, Low Switching Harmonics,

20kHz to 250kHz Switching Frequency

LT1619

Low Voltage Current Mode Controller

1.9V

LT1681/LT3781

Dual Transistor Synchronous Forward Controller

Operation Up to 72V Maximum

LT1725

General Purpose Isolated Flyback Controller

No Optoisolator Required, Accurate Regulation Without User Trims,

50kHz to 250kHz Switching Frequency, SSOP-16 Package

LTC1871

Operation as Low as 2.5V Input, Boost, Flyback, SEPIC

LT1910

Protected High Side MOSFET Driver

8V to 48V Supply Range, Protected –15V to 60V Supply Transient

LT1952

Single Switch Forward Controller

25W to 500W; Synchronous Controller

LTC3440

Micropower Buck-Boost DC/DC Converter

Synchronous, Single Inductor, No Schottky Diode Required

LTC3704

Positive-to-Negative DC/DC Controller

2.5V

Excellent Transient Response

LTC3705

Two-Switch Forward Converter Gate Driver and Controller

Use with LTC3726, Isolated Power Supplies, High Speed Gate Drivers

LT3706

PolyPhase Secondary Side Controller

Scalable Output Power; Self-Starting Architecture

LTC3722

Full Bridge Controller

Synchronous; ZVS Operation; 24-Pin SSOP

LTC3725

Two-Switch Forward Controller

On-Chip Gate-Driver; Fast Startup

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

NDRV

GND

PGND VSLMT

UVLO

BOOST

LTC3705

BAS21

FQT7N10

0.22

µF

2.2nF

250V

1nF

100V

1nF

100V

10

µF

25V

2.2

µF

16V

CMPSH1-4

1.2

Ω

5K

7.5V

L2 1.2

µH

10

Ω

0.25W

10

Ω

0.25W

TG TS BG IS

T2

1

µF

162k

L1: VISHAY IHLP-2525CZ-01

L2: COILCRAFT SER2010-122

T1: PULSE PA0807

T2: PULSE PA0297

33nF

30m

Ω

1W

2m

Ω

2W

Si7336ADP

Si7336ADP

×2

T1

2:1

9:2

•

•

MURS120

MURS120

33nF

1nF

15k

1%

365k

1%

100k

2.2

µF

25V

SS/FLT

–

+

L1 1

µH

330

µF

6.3V

×3

1

µF

470pF

680pF

FG

SW SG

CZT3019

GND

PGND

SLP

MODE

+

–

RUN/SS

LTC3726

ITH

22.6k

1%

100k

20k

680pF

102k

1%

–

3726 F05

+

FB/PHASE

FS/SYNC

0.1

µF

5k

1nF

•

•

1

µF

100V

1

µF

100V

x3

100

Ω

100

Ω

100

Ω

100

Ω

Si7852DP

Si7852DP

FZT690B

TYPICAL APPLICATIO

Figure 5. 36V-72V to 3.3V/20A Isolated Forward Converter

(See Typical Performance Characteristics)