FAN5340: LED Driver, Synchronous Boost, with PWM Dimming Interface

Description: The FAN5340 is a synchronous constant-current LED ...
  • The FAN5340 is a synchronous constant-current LED driver capable of efficiently delivering up to 500mW to a string of up to four LEDs in series. Optimized for small form-factor applications, the 1.2MHz fixed switching frequency allows the use of chip inductors and capacitors.
    For safety, the device features integrated short-circuit detection plus over-voltage and thermal shutdown protections. In addition, input under-voltage lockout protection is triggered if the battery voltage is low.
    Brightness (dimming) control is implemented by applying a PWM signal of 300Hz to 1kHz on the EN pin. During shutdown, the FAN5340 disconnects the LED anodes from the output of the boost regulator, which holds the boost regulator’s voltage on COUT, reducing audible noise from the PWM dimming, and removing power from the LED string.
  • Features
  • Synchronous Current-Mode Boost Converter
  • Up to 500 mW Output Power
  • Supports 2, 3, or 4 LEDs in Series
  • 2.7 V to 4.8 V Input Voltage Range
  • 1.2 MHz Fixed Switching Frequency
  • 1 mA Maximum Quiescent Current
  • Soft-Start Capability
  • Input Under-Voltage Lockout (UVLO)
  • Output Over-Voltage Protection (OVP)
  • Short-Circuit Detection
  • Thermal Shutdown (TSD) Protection
  • Applications
  • TBA
  • Technical Documentation & Design Resources
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: LED Driver, Synchronous Boost, with PWM Dimming Interface
  • Package Type: WLCSP-8
  • Package Case Outline: 567PZ
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Specifications
  • VI Max (V): 4.8 
  • IO Max (mA): 40 
  • LEDs in Series, Max #:
  • LEDs in Parallel, Max #:
  • Package Type: WLCSP-8 
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