FAN5345: LED Driver, Series Boost, with Single-wire Digital Interface

Description: The FAN5345 is an asynchronous constant-current LE...
  • The FAN5345 is an asynchronous constant-current LED driver that drives LEDs in series to ensure equal brightness for all the LEDs. FAN5345S20X has an output voltage of 20 V and can drive up to 5 LEDs in series. FAN5345S30X has an output voltage of 30 V and drive up to 8 LEDs in series. Optimized for small form-factor applications, the 1.2 MHz fixed switching frequency allows the use of small inductors and capacitors.
    The FAN5345 uses a simple 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, over-current, short-circuit detection, and thermal-shutdown protection. In addition, input under-voltage lockout protection is triggered if the battery voltage is too low.
  • Features
  • ■ Asynchronous Boost Converter
    ■ Drives LEDs in Series:
  • FAN5345S20X: 20 V Output
  • FAN5345S30X: 30 V Output
    ■ 2.5 V to 5.5 V Input Voltage Range
    ■ Single-Wire Digital Control Interface to Set LED Brightness Levels
  • 32 Linear Steps
    ■ 1.2 MHz Fixed Switching Frequency
    ■ Soft-Start Capability
    ■ Input Under-Voltage Lockout (UVLO)
    ■ Output Over-Voltage Protection (OVP)
    ■ Short-Circuit Detection
    ■ Thermal Shutdown (TSD) Protection
  • Technical Documentation & Design Resources
    Availability and Samples
    FAN5345S20X
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: LED Driver, Series Boost, with Single-wire Digital Interface
  • Package Type: TSOT-23-6
  • Package Case Outline: 419AG
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):13 to 16
  • Arrow:0
  • Mouser:>1K
  • FAN5345S30X
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: LED Driver, Series Boost, with Single-wire Digital Interface
  • Package Type: TSOT-23-6
  • Package Case Outline: 419AG
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Inventory

  • Market Leadtime (weeks):4 to 8
  • Arrow:0
  • Digikey:>1K
  • Specifications
  • VI Max (V): 5.5 
  • IO Max (mA): 25 
  • LEDs in Series, Max #:
  • LEDs in Parallel, Max #:
  • Package Type: TSOT-23-6 
  • ON Semiconductor Full Web Site