FL7760 Datasheet (ON Semiconductor) - High-Side Sensing Constant Current Buck Controller

FL7760, High-Side Sensing Constant Current Buck Controller

Pin Pin Name Function 1 VIN IC Input 2 GND Ground 3 DIM Analog / PWM / Hybrid / Dimming 4 DRV 5 VCC 6 SEN Driver Output IC Supply Current Sense Description Connect to the high voltage input line and supply current to the IC.

Ground of IC.

DIM voltage determines LED current regula

High-Side Sensing Constant Current Buck Controller for High Switching Frequency LED Driver FL7760 The FL7760 is a constant current step down CCM controller for wide output power LED lighting applications.

The FL7760 adapts hysteretic reference architecture that accurately regulates LED current by sensing voltage across an external high side sense resistor.

This control scheme can stabilize LED current against input voltage and output load transient condition and implement optimal PWM and

FL7760 Features

* Wide Input Range (8 VDC~70 VDC)

* Continuous Conduction Mode Operation

* Hysteretic LED Current Control

* Wide analog dimming range down to 5%

* Wide PWM dimming duty range to 0.2% at 2 kHz PWM freq.

* High switching frequency up to 1 MHz

* H