LT3599(RevD) データシートの表示（PDF） - Linear Technology

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LT3599
(Rev.:RevD)

4-Channel 120mA LED Driver with ±1.5% Current Matching

Linear Technology 

LT3599

Typical Applications

12W LED Driver

1MHz Boost, 80mA per String, 10 LEDs per String

PVIN

8V TO 24V

L1

10µH

D1

R1

200k

R2

31.6k

R3

33.2k

C1

3.3µF

25V

VIN

3.1V TO 5.5V

VIN

VIN

R5

C3

1µF

R4

100k

6.3V

100k

PWM

R6

53.6k

R7

53.6k

R8

80.6k

VIN

SW

SHORTLED

OPENLED

SHDN/UVLO

PWM

SYNC

CTRL

LT3599

RT

VREF

TSET

DISABLE4

ISET SS GND

VOUT

VO_SW

FB

LED1

LED2

LED3

LED4

VC

R10

1M

R11

31.6k

80mA PER STRING

C1: MURATA GRM21BR71E335K

C2: MURATA GRM31CR71H475K

D1: DIODES INC. DFLS240

L1: VISHAY IHLP2020BZER100M01

R9

16.5k

C4

47nF

RC

10k

CC

2.2nF

100pF

3599 TA02a

C2

4.7µF

50V

s2

Efficiency

100

95

PVIN = 24V

90

85

PVIN = 12V

80

75

70

65

60

40

80 120 160 200 240 280 320

TOTAL LED CURRENT (mA)

3599 TA02b

PWM Dimming Range 1000:1

(10ms Period)

PWM

5V/DIV

ILED

TOTAL

200mA/DIV

10µs/DIV

3599 TA02c

3599fd

18

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