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LT3476
TYPICAL APPLICATION
Quad Boost 200mA × 8LED Driver
PV IN
14V TO
18V
L1
47μH
L2
47μH
2.2μF
L3
47μH
L4
47μH
Boost Efficiency vs LED Current
D1
CAP1
CAP2
D2
D3
CAP3
CAP4
D4
100
2.2μF
0.25
LED1
0.25
LED2
2.2μF
2.2μF
0.25
LED3
0.25
LED4
2.2μF
96
6 LEDS
92
8 LEDS
UP TO
8 LEDS
200mA
200mA
200mA
200mA
88
V IN
3.3V
PWM1-4
SHDN
2.2μF
SW1
SW1
V IN
PWM1-4
SHDN
REF
SW2
SW2
LT3476
SW3
SW3
SW4
CAP1-4
LED1-4
VC1-4
SW4
4.99k
10pF
SW1-4
84
80
0
100
V IN = 3.3V
PV IN = 14V
WHITE LEDS
V F = 3.6V AT 1A
200 300 400 500
LED CURRENT (mA)
3476 TA04b
110k
VADJ1-4
GND
RT
2.2nF
100k
L1 TO L4: COILCRAFT MSS1038-473
D1 TO D4: NXP PMEG4010EJ
44.2k
600kHz
3476 TA04
RELATED PARTS
PART NUMBER
LT3496
LT3492
LT3754
DESCRIPTION
40V, Triple Output 750mA, 2.1MHz High Current LED Driver
with 3000:1 Dimming with PMOS Disconnect FET Drivers
60V, Triple Output 750mA, 1MHz High Current LED Driver
with 3000:1 Dimming with PMOS Disconnect FET Drivers
60V, 1MHz Boost 16-Channel 40mA LED Driver with True
Color 3000:1 PWM Dimming and 2% Current Matching
COMMENTS
V IN : 3V to 30V, V OUT(MAX) = 40V, 3000:1 True Color PWM Dimming,
I SD < 1μA, 4mm × 5mm QFN-28 Package
V IN : 3V to 30V, V OUT(MAX) = 60V, 3000:1 True Color PWM Dimming,
I SD < 1μA, TSSOP-28 and 4mm × 5mm QFN-28 Packages
V IN : 4.5V to 40V, V OUT(MAX) = 60V, True Color PWM Dimming = 3000:1,
I SD < 1μA, 5mm × 5mm QFN-32 Package
LT3755/LT3755-1/ High Side 40V, 1MHz LED Controller with True Color 3000:1
LT3755-2 PWM Dimming
V IN : 4.5V to 40V, V OUT(MAX) = 75V, 3000:1 True Color PWM Dimming
I SD < 1μA, 3mm × 3mm QFN-16 and MSOP-16E Packages
LT3598
LT3599
44V, 1.5A, 2.5MHz Boost 6-Channel 20mA LED Driver
44V, 2A, 2.5MHz Boost 4-Channel 100mA LED Driver
V IN : 3V to 30V (40V MAX ), V OUT(MAX) = 44V, 1000:1 True Color PWM
Dimming, I SD < 1μA, 4mm × 4mm QFN-24 Package
V IN : 3V to 30V (40V MAX ), V OUT(MAX) = 44V, 1000:1 True Color PWM
Dimming, I SD < 1μA, 4mm × 4mm QFN-24 Package
LT3518
2.3A, 2.5MHz High Current LED Driver with 3000:1 Dimming V IN : 3V to 30V, V OUT(MAX) = 45V, 3000:1 True Color PWM Dimming,
with PMOS Disconnect FET Driver I SD < 1μA, 4mm × 4mm QFN-16 and TSSOP-16E Packages
LT3486
LT3478/LT3478-1
LT3956
Dual 1.3A, 2MHz High Current LED Driver
4.5A, 2MHz High Current LED Driver with 3000:1 Dimming
High Side 80V, 3.5A, 1MHz LED Driver with True Color
3,000:1 PWM Dimming
V IN : 2.5V to 24V, V OUT(MAX) = 36V, 1000:1 True Color PWM Dimming,
I SD < 1μA, 4mm × 4mm QFN-16 and TSSOP-16E Packages
V IN : 2.8V to 36V, V OUT(MAX) = 40V, 3000:1 True Color PWM Dimming,
I SD < 1μA, TSSOP-16E Package
V IN : 6V to 80V, V OUT(MAX) = 80V, True Color PWM Dimming = 3000:1,
I SD < 1μA, 5mm × 6mm QFN-36 Package
3476fb
Linear Technology Corporation
(408) 432-1900 ● FAX : (408) 434-0507 www.linear.com
14
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
LT 1111 REV B ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2006
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相关代理商/技术参数
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