LT3492IUFD-TRPBF 查看數據表（PDF） - Linear Technology

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LT3492IUFD-TRPBF

Triple Output LED Driver with 3000:1 PWM Dimming

Linear Technology 

LT3492

TYPICAL APPLICATION

Triple Buck-Boost Mode 100mA × 4 LED Driver

PVIN

10V TO 16V

C1

2.2μF

L1

22μH

100mA

4 LEDs

L2

22μH

100mA

4 LEDs

L3

22μH

100mA

4 LEDs

TG1

M1

TG2

M2

TG3

M3

ISN1

1Ω

ISP1

D1

3.9M

OVP1

100k

ISN2

1Ω

ISP2

D2

3.9M

OVP2

100k

ISN3

1Ω

ISP3

D3

3.9M

OVP3

100k

C2

0.1μF

C3

1μF

PVIN

C4

0.1μF

C5

1μF

PVIN

C6

0.1μF

C7

1μF

PVIN

VIN

5V TO 16V

C8

1μF

SW1

ISP1-3

ISN1-3

VIN

PWM1-3

SHDN

SW2

LT3492

GND

SW3 TG1-3

OVP1-3

VC1-3

VREF

CTRL1-3

FADJ

150k

18.2k

2.2nF

3492 TA06

C1: MURATA GRM31MR71E225KA93

C2, C4, C6: MURATA GRM21BR71H104KA01B

C3, C5, C7: MURATA GRM31MR71H105KA88

C8: MURATA GRM31MR71E105KA93

D1-D3: ROHM RB160M-60

L1-L3: TDK VLF5014AT-220MR62

M1-M3: ZETEX ZXMP6A13F

49.9k

1.3MHz

3000:1 PWM Dimming at 100Hz

PWM

5V/DIV

ILED

0.1A/DIV

IL

0.5A/DIV

1μs/DIV

3492 TA06b

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COMMENTS

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3492f

20 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

LT 1109 • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 2009

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