LT3791EFE#PBF

LT3791 is a synchronous 4-switch buck-boost LED driver controller. This controller can regulate LED current upto 52V of LED string with input voltages above, below, or equal to the output voltage. The constant-frequency, forced-continuous current mode architecture allows its frequency to be adjusted or synchronized from 200KHz to 700KHz. No top MOSFET refresh switching cycle is needed in buck or boost operation. With 60V input, 60V output capability and seamless transitions between operating regions, this device is ideal for LED driver applications in automotive, industrial, and even battery-powered systems. It is used in application such as automotive head lamps/running lamps, general purpose lighting etc.

• Synchronous switching upto 98.5% efficiency
• Wide VIN range is 4.7V to 60V
• ±6% LED current accuracy: 0V ≤ VLED <lt/> 52V
• True colour PWM™ and analogue dimming
• LED and input current regulation with current monitor outputs
• No top MOSFET refresh in buck or boost
• VOUT disconnected from VIN during shutdown, open or shorted LED fault protection
• Capable of 100W or greater per IC, VIN shutdown is 1µA maximum
• Operating temperature is -40°C to 125°C
• Package style is 38-lead plastic TSSOP

บันทึก

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