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FAN5608 - Serial/Parallel LED Driver

General Description

The FAN5608 LED driver generates regulated output currents from a battery with input voltage varying between 2.7V to 5V.

An internal NMOS switch drives an external inductor, and a Schottky diode delivers the inductor’s stored energy to the load.

Key Features

  • Two Independent Channels Drive up to Six LEDs per Channel.
  • Adaptive Output Voltage Drive to Maximize Efficiency.
  • PWM/PFM Mode of Operation of the Boost Circuit.
  • Up to 85% Efficiency.
  • Up to 2 × 20mA Output.
  • Two Built-in DACs for Independent (Digital) Brightness Control for Both Channels.
  • LED’s Current Can be Duty-Cycle-Modulated between 0 to 20mA.
  • Digital, Analog, and PWM Brightness Control.
  • 2.7V to 5V Input Voltage R.

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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.

View original datasheet text
www.fairchildsemi.com FAN5608 Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter Features • Two Independent Channels Drive up to Six LEDs per Channel • Adaptive Output Voltage Drive to Maximize Efficiency • PWM/PFM Mode of Operation of the Boost Circuit • Up to 85% Efficiency • Up to 2 × 20mA Output • Two Built-in DACs for Independent (Digital) Brightness Control for Both Channels • LED’s Current Can be Duty-Cycle-Modulated between 0 to 20mA • Digital, Analog, and PWM Brightness Control • 2.7V to 5V Input Voltage Range • 0.5MHz Operating Frequency (8MHz internal clock) • Soft Start • Low Shutdown Current: ICC < 1µA • LED Short Circuit Protection • Minimal External Components Needed • Available in space saving 8-lead and 12-lead MLP Packages.