LT3476
14
3476fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2006
LT 1111 REV B • PRINTED IN USA
Quad Boost 200mA × 8LED Driver
2.2µF
2.2nF
4.99k
44.2k
600kHz
CAP1-4
SW4SW1
CAP1
SW2 SW3
SW2 SW3 SW4SW1
VC1-4 SW1-4
LED1-4
V
IN
PWM1-4
PWM1-4
RT
V
IN
3.3V
IN
14V TO
18V
GND
SHDN
LT3476
3476 TA04
SHDN
2.2µF
LED1
0.25Ω 0.25Ω 0.25Ω 0.25Ω
200mA
CAP2
2.2µF
LED2
200mA
UP TO
8 LEDS
CAP3
2.2µF
LED3
200mA
CAP4
L4
47µH
2.2µF
LED4
200mA
10pF
2.2µF
L3
47µH
L1
47µH
L2
47µH
D1 D2 D3 D4
REF
VADJ1-4
100k
110k
L1 TO L4: COILCRAFT MSS1038-473
D1 TO D4: NXP PMEG4010EJ
relAteD pArts
typicAl ApplicAtion
LED CURRENT (mA)
0
EFFICIENCY (%)
88
92
500300
3476 TA04b
84
80
100 200 400
96
8 LEDS
6 LEDS
V
IN
= 3.3V
PV
IN
= 14V
WHITE LEDS
V
F
= 3.6V AT 1A
Boost Efficiency vs LED Current
PART NUMBER DESCRIPTION COMMENTS
LT3496 40V, Triple Output 750mA, 2.1MHz High Current LED Driver
with 3000:1 Dimming with PMOS Disconnect FET Drivers
V
IN
: 3V to 30V, V
OUT(MAX)
= 40V, 3000:1 True Color PWM Dimming,
I
SD
< 1μA, 4mm × 5mm QFN-28 Package
LT3492 60V, Triple Output 750mA, 1MHz High Current LED Driver
with 3000:1 Dimming with PMOS Disconnect FET Drivers
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
LT3754 60V, 1MHz Boost 16-Channel 40mA LED Driver with True
Color 3000:1 PWM Dimming and 2% Current Matching
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/
LT3755-2
High Side 40V, 1MHz LED Controller with True Color 3000:1
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 44V, 1.5A, 2.5MHz Boost 6-Channel 20mA 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
LT3599 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
LT3518 2.3A, 2.5MHz High Current LED Driver with 3000:1 Dimming
with PMOS Disconnect FET Driver
V
IN
: 3V to 30V, V
OUT(MAX)
= 45V, 3000:1 True Color PWM Dimming,
I
SD
< 1μA, 4mm × 4mm QFN-16 and TSSOP-16E Packages
LT3486 Dual 1.3A, 2MHz High Current LED Driver 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
LT3478/LT3478-1 4.5A, 2MHz High Current LED Driver with 3000:1 Dimming V
IN
: 2.8V to 36V, V
OUT(MAX)
= 40V, 3000:1 True Color PWM Dimming,
I
SD
< 1μA, TSSOP-16E Package
LT3956 High Side 80V, 3.5A, 1MHz LED Driver with True Color
3,000:1 PWM Dimming
V
IN
: 6V to 80V, V
OUT(MAX)
= 80V, True Color PWM Dimming = 3000:1,
I
SD
< 1μA, 5mm × 6mm QFN-36 Package
