LT3761AEMSE#PBF

LT3761A is a DC/DC controller designed to operate as a constant-current source and constant-voltage regulator. It features a programmable internal PWM dimming signal. It is ideally suited for driving high current LEDs, but also has features to make it suitable for charging batteries and supercapacitors. The fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages. A voltage feedback pin serves as the input for several LED protection features, and also makes it possible for the converter to operate as a constant-voltage source. A frequency adjust pin allows the user to program the frequency from 100KHz to 1MHz to optimize efficiency, performance or external component size. It is widely used in application such as high voltage LED strings <gt/>100V with ground referred current sense, grounded anode LEDs, battery and supercap chargers, accurate current limited voltage regulators etc.

• 3000:1 True Colour PWM™ dimming for LEDs
• Wide VIN range is 4.5V to 60V, programmable PWM dimming signal generator
• Rail-to-rail current sense range is 0V to 80V
• Analog dimming, output short-circuit protected boost
• Open LED protection and reporting
• Programmable VIN UVLO with hysteresis
• C/10 indication for battery chargers
• Low shutdown current is 1µA maximum at (EN/UVLO = 0V, PWM = 0V, TA = 25°C)
• Operating temperature is -40°C to 125°C
• Package style is 16-lead plastic MSOP

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