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FL7760 - High-Side Sensing Constant Current Buck Controller

General Description

Connect to the high voltage input line and supply current to the IC.

Ground of IC.

Key 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.
  • High source / sink current of 1.5 A / 2.5 A.
  • Cycle.
  • by.
  • Cycle Peak Current Limit.
  • Low Operating Current (300 uA).
  • Low Stand.
  • by Current (240 uA) Typical.

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Datasheet Details

Part number FL7760
Manufacturer onsemi
File Size 256.40 KB
Description High-Side Sensing Constant Current Buck Controller
Datasheet download datasheet FL7760 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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 analog dimming control. Time delay control method widens analog dimming range down to less than 5%. FL7760 has low 200 mV reference voltage to maximize system efficiency and high frequency driving capability so that system profile can be minimized in wide scale power ranges.