FAN5343: LED Driver, Series Boost, with Integrated Schottky Diode and Single-wire Digital Interface

Description: The FAN5343 is an asynchronous constant-current LE...
  • The FAN5343 is an asynchronous constant-current LED driver capable of efficiently delivering up to 500mW to a string of six (6) LEDs in series. Optimized for small form factor applications, the 1.2MHz fixed switching frequency allows the use of small chip inductors and capacitors. The FAN5343 uses a single-wire digital control interface to program the brightness levels of the LEDs in 32 linear steps by applying digital pulses. For safety, the device features integrated over-voltage, overcurrent, short circuit detection, and thermal shutdown protection. In addition, input under-voltage lockout protection is triggered if the battery voltage is too low. The FAN5343 is available in a very low profile, small form factor 2mm x 2mm x 0.55mm 6-lead UMLP package that is green and RoHS compliant.
  • Features
  • Asynchronous Boost Converter
  • VOUT up to 24 V
  • Internal Schottky Diode
  • Up to 500 mW Output Power
  • 2.7 V to 5.5 V Input Voltage Range
  • Single-Wire Digital Control Interface to Set LED Brightness Levels
  • 32 Linear Steps
  • Fixed Switching Frequency: 1.2 MHz
  • Soft-Start Capability
  • Input Under-Voltage Lockout (UVLO)
  • Output Over-Voltage Protection (OVP)
  • Short-Circuit Detection
  • Thermal Shutdown Protection (TSD)
  • Applications
  • TBA
  • Technical Documentation & Design Resources
    Availability and Samples
    FAN5343UMPX
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: LED Driver, Series Boost, with Integrated Schottky Diode and Single-wire Digital Interface
  • Package Type: UDFN-6
  • Package Case Outline: 517DS
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):4 to 8
  • Arrow:0
  • Digikey:>1K
  • Mouser:>1K
  • Specifications
  • VI Max (V): 5.5 
  • IO Max (mA): 500 
  • LEDs in Series, Max #:
  • LEDs in Parallel, Max #:
  • Package Type: UDFN-6 
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