(China (Mainland))
Product Summary
The LT3476EUHF is a quad output DC/DC converter designed to operate as a constant-current source for driving high current LEDs. A fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages. A frequency adjust pin allows the user to program switching frequency between 200kHz and 2MHz to optimize efficiency and external component size. The applications of the LT3476EUHF include RGGB Lighting, Automotive and Avionic Lighting, TFT LCD Backlighting and Constant-Current Sources.
Parametrics
LT3476EUHF absolute maximum ratings: (1)VIN: 16V; (2)PWM1-4, SHDN: 16V; (3)SW1-4, LED1-4, CAP1-4: 36V; (4)REF, RT , VADJ1-4, VC1-4: 2V; (5)Operating Temperature Range: –40 to 85℃; (6)Maximum Junction Temperature: 125℃; (7)Storage Temperature Range: –65 to 125℃; (8)Lead Temperature: 300℃.
Features
LT3476EUHF features: (1)True Color PWMTM Dimming Delivers Up to 5000:1 Dimming Ratio; (2)LED Current Regulation with High-Side Sense; (3)VADJ Pin Accurately Sets LED Current Sense Threshold Over Range 10mV to 120mV; (4)Four Independent Driver Channels with 1.5A, 36V Internal NPN Switches; (5)Frequency Adjust Pin: 200kHz to 2MHz; (6)High Efficiency Conversion = Up to 96%; (7)Open LED Protection; (8)Low Quiescent Current; (9)Wide VIN Range: 2.8V to 16V; (10)Thermally Enhanced, 38-Lead, 5mm × 7mm QFN Package.
Diagrams
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 LT3476EUHF#PBF |
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IC LED DRVR HP CONST CURR 38-QFN |
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LT3476EUHF#TRPBF |
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IC LED DRVR HP CONST CURR 38-QFN |
Data Sheet |
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