LT3746IUHH#TRPBF【PDF 28/28 页】IC LED DRIVER 32CHANNEL 56-QFN

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LT3746

TYPICAL APPLICATION

V IN

13V TO 42V

V IN

CAP

0.47μF

16V

4.7μF

50V

V CC

3V TO 5.5V

10μF

10V

EN

100k

EN/UVLO

V CC

SYNC

GATE

GND

M1 L1

22μH

D1

33m

80.6k

C1

2 × 47μF

11V MAXIMUM OUTPUT VOLTAGE

46.4k

10nF

RT

SS

LT3746

ISP

ISN

FB

10k

..

60.4k

2.048MHz CLOCK

32.4k

I SET

T SET

PWMCK

LED00

LED01

LED02

.

LED29

LED30

LED31

TTL/CMOS

SCKI

SDI

LDI

SCKO

SDO

LDO

TTL/CMOS

M1: VISHAY Si9407BDY

D1: DIODES DFLS160

L1: WüRTH ELECTRONIK 7447779122

C1: SANYO 16TQC47M

3746 TA03

Figure 8. 32-Channel LED Driver, 1MHz Buck, 3 LEDs 10mA to 30mA per Channel, 500Hz 12-Bit Dimming

RELATED PARTS

PART NUMBER DESCRIPTION

COMMENTS

LT3476

LT3486

LT3496

LT3595

LT3598

LT3599

LT3754

LT3755/

LT3755-1

LT3756/

LT3756-1

LT3760

Quad Output 1.5A, 2MHz High Current LED Driver with

1,000:1 Dimming

Dual 1.3A , 2MHz High Current LED Driver

Triple Output 750mA, 2.1 MHz High Current LED Driver

with 3,000:1 Dimming

45V, 2.5MHz 16-Channel Full Featured LED Driver

44V, 1.5A, 2.5MHz Boost 6-Channel 30mA LED Driver

44V, 2A, 2.5MHz Boost 4-Channel 120mA LED Driver

60V, 1MHz Boost 16-Channel 50mA LED Driver with True

Color 3,000:1 PWM Dimming and 2.8% Current Matching

High Side 40V, 1MHz LED Controller with True Color

3,000:1 PWM Dimming

High Side 100V, 1MHz LED Controller with True Color

3,000:1 PWM Dimming

60V, 1MHz Boost 8-Channel 100mA LED Driver with True

Color 3,000:1 PWM Dimming and 2.8% Current Matching

V IN : 2.8V to 16V, V OUT(MAX) = 36, True Color PWM Dimming = 1000:1,

I SD < 10μA, 5mm × 7mm QFN-10 Package

V IN : 2.5V to 24V, V OUT(MAX) = 36, True Color PWM Dimming = 1000:1,

I SD < 1μA, 5mm × 3mm DFN-16 TSSOP-16E Package

V IN : 3V to 30V, V OUT(MAX) = 60, True Color PWM Dimming = 3000:1,

I SD < 1μA, 4mm × 5mm QFN-28 Package

V IN : 4.5V to 45V, V OUT(MAX) = 45, True Color PWM Dimming = 5000:1,

I SD < 1μA, 5mm × 9mm QFN-56 Package

V IN : 3V to 40V, V OUT(MAX) = 44, True Color PWM Dimming = 1000:1,

I SD < 1μA, 4mm × 4mm QFN-24 Package

V IN : 3V to 40V, V OUT(MAX) = 44, True Color PWM Dimming = 1000:1,

I SD < 1μA, 4mm × 4mm QFN-24 Package

V IN : 4.5V to 40V, V OUT(MAX) = 60, True Color PWM Dimming = 3000:1,

I SD < 1μA, 5mm × 5mm QFN-32 Package

V IN : 4.5V to 40V, V OUT(MAX) = 60, True Color PWM Dimming = 3000:1,

I SD < 1μA, 3mm × 3mm QFN-16 MSOP-16E Package

V IN : 6V to 100V, V OUT(MAX) = 100, True Color PWM Dimming = 3000:1,

I SD < 1μA, 3mm × 3mm QFN-16 MSOP-16E Package

V IN : 4.5V to 40V, V OUT(MAX) = 60, True Color PWM Dimming = 3000:1,

I SD < 1μA, TSSOP-28E Package

28 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX : (408) 434-0507 www.linear.com/3746

●

For more information www.linear.com/3746

3746fa

LT 0413 REV A ? PRINTED IN USA

? LINEAR TECHNOLOGY CORPORATION 2011

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