Datasheet LT3476 (Analog Devices) - 14

LT3476
typicAl ApplicAtion Quad Boost 200mA × 8LED Driver
PVIN 14V TO 18V L1 L2 L3 L4 2.2µF 47µH 47µH 47µH 47µH
Boost Efficiency vs LED Current
D1 D2 D3 D4 100 CAP1 CAP2 CAP3 CAP4 0.25Ω 0.25Ω 0.25Ω 0.25Ω 2.2µF 2.2µF 2.2µF 2.2µF 96 LED1 LED2 LED3 LED4 6 LEDS 92 8 LEDS UP TO 200mA 200mA 200mA 200mA 8 LEDS 88 EFFICIENCY (%) V SW1 SW2 SW3 SW4 84 IN = 3.3V PVIN = 14V SW1 SW2 SW3 SW4 V WHITE LEDS IN 3.3V V V IN CAP1-4 F = 3.6V AT 1A 80 PWM1-4 PWM1-4 LED1-4 10pF LT3476 0 100 200 300 400 500 SHDN SHDN VC1-4 SW1-4 LED CURRENT (mA) 2.2µF REF 4.99k 3476 TA04b VADJ1-4 GND RT 110k 2.2nF 44.2k 3476 TA04 600kHz 100k L1 TO L4: COILCRAFT MSS1038-473 D1 TO D4: NXP PMEG4010EJ
relAteD pArts PART NUMBER DESCRIPTION COMMENTS
LT3496 40V, Triple Output 750mA, 2.1MHz High Current LED Driver VIN: 3V to 30V, VOUT(MAX) = 40V, 3000:1 True Color PWM Dimming, with 3000:1 Dimming with PMOS Disconnect FET Drivers ISD < 1μA, 4mm × 5mm QFN-28 Package LT3492 60V, Triple Output 750mA, 1MHz High Current LED Driver VIN: 3V to 30V, VOUT(MAX) = 60V, 3000:1 True Color PWM Dimming, with 3000:1 Dimming with PMOS Disconnect FET Drivers ISD < 1μA, TSSOP-28 and 4mm × 5mm QFN-28 Packages LT3754 60V, 1MHz Boost 16-Channel 40mA LED Driver with True VIN: 4.5V to 40V, VOUT(MAX) = 60V, True Color PWM Dimming = 3000:1, Color 3000:1 PWM Dimming and 2% Current Matching ISD < 1μA, 5mm × 5mm QFN-32 Package LT3755/LT3755-1/ High Side 40V, 1MHz LED Controller with True Color 3000:1 VIN: 4.5V to 40V, VOUT(MAX) = 75V, 3000:1 True Color PWM Dimming LT3755-2 PWM Dimming ISD < 1μA, 3mm × 3mm QFN-16 and MSOP-16E Packages LT3598 44V, 1.5A, 2.5MHz Boost 6-Channel 20mA LED Driver VIN: 3V to 30V (40VMAX), VOUT(MAX) = 44V, 1000:1 True Color PWM Dimming, ISD < 1μA, 4mm × 4mm QFN-24 Package LT3599 44V, 2A, 2.5MHz Boost 4-Channel 100mA LED Driver VIN: 3V to 30V (40VMAX), VOUT(MAX) = 44V, 1000:1 True Color PWM Dimming, ISD < 1μA, 4mm × 4mm QFN-24 Package LT3518 2.3A, 2.5MHz High Current LED Driver with 3000:1 Dimming VIN: 3V to 30V, VOUT(MAX) = 45V, 3000:1 True Color PWM Dimming, with PMOS Disconnect FET Driver ISD < 1μA, 4mm × 4mm QFN-16 and TSSOP-16E Packages LT3486 Dual 1.3A, 2MHz High Current LED Driver VIN: 2.5V to 24V, VOUT(MAX) = 36V, 1000:1 True Color PWM Dimming, ISD < 1μA, 4mm × 4mm QFN-16 and TSSOP-16E Packages LT3478/LT3478-1 4.5A, 2MHz High Current LED Driver with 3000:1 Dimming VIN: 2.8V to 36V, VOUT(MAX) = 40V, 3000:1 True Color PWM Dimming, ISD < 1μA, TSSOP-16E Package LT3956 High Side 80V, 3.5A, 1MHz LED Driver with True Color VIN: 6V to 80V, VOUT(MAX) = 80V, True Color PWM Dimming = 3000:1, 3,000:1 PWM Dimming ISD < 1μA, 5mm × 6mm QFN-36 Package 3476fb 14 Linear Technology Corporation LT 1111 REV B • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2006 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts