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FAN5608

FAN5608 Description

Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter

FAN5608 Categories

DC/DC Converters

FAN5608 Manufacturer

Fairchild Semiconductor

FAN5608 Datasheet (PDF)

FAN5608 Datasheet

FAN5608 Price & Availability


Check FAN5608 Price & Availability at Canics

FAN5608 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 x 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 5.5V Input Voltage Range
  • 0.5MHz Operating Frequency (8MHz internal clock)
  • Soft Start
  • Low Shutdown Current: ICC < 1ľA
  • LED Short Circuit Protection
  • Minimal External Components Needed
  • Available in space saving 8-lead and 12-lead MLP Packages

FAN5608 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. Proprietary internal circuitry continuously monitors the currrent on both strings and automatically adjusts the generated output DC voltage to the lowest minimum value required by the LEDs string with the highest summarized forward voltage. This adaptive nature of the FAN5608 ensures operation at the highest possible efficiency. Soft start circuitry prevents excessive current drawn from the supply during power on. Any number of LEDs can be connected in series as long as the summed forward voltages do not exceed the specified operating output voltage range. Although it is not required to have an equal number of LEDs connected in series within each branch, the highest efficiency and best current regulation is always achieved when an equal number of LEDs are serially connected.

    FAN5608 Parameters

    Product statusFull production
    Package typeMLP
    Leads12
    Packing methodTAPE REEL
    Pricing*$0.92
    Select parameters and click to see components with these parameters.

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    Keywords
    FAN5608 Data Sheet FAN5608 Spec FAN5608 Application Notes FAN5608 Distributor
    FAN5608 Circuit FAN5608 Reference FAN5608 PDF FAN5608 RoHS