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FAN5340 - Synchronous Constant-Current Series Boost LED Driver

Description

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.

Features

  • Synchronous Current-Mode Boost Converter.
  • Up to 500mW Output Power.
  • Supports 2, 3, or 4 LEDs in Series.
  • 2.7V to 4.8V Input Voltage Range.
  • 1.2MHz Fixed Switching Frequency.
  • 1mA Maximum Quiescent Current.
  • Soft-Start Capability.
  • Input Under-Voltage Lockout (UVLO).
  • Output Over-Voltage Protection (OVP).
  • Short-Circuit Detection.
  • Thermal Shutdown (TSD) Protection.
  • 8-Lead 3.00 x 3.00mm MLP.
  • 8-Bump 1.57 x 1.57mm WLCSP.

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Full PDF Text Transcription

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FAN5340 — Synchronous Constant-Current Boost Series LED Driver with PWM Brightness Control L1 April 2010 FAN5340 Synchronous Constant-Current Series Boost LED Driver with PWM Brightness Control and Integrated Load Disconnect Features ƒ Synchronous Current-Mode Boost Converter ƒ Up to 500mW Output Power ƒ Supports 2, 3, or 4 LEDs in Series ƒ 2.7V to 4.8V Input Voltage Range ƒ 1.2MHz Fixed Switching Frequency ƒ 1mA Maximum Quiescent Current ƒ Soft-Start Capability ƒ Input Under-Voltage Lockout (UVLO) ƒ Output Over-Voltage Protection (OVP) ƒ Short-Circuit Detection ƒ Thermal Shutdown (TSD) Protection ƒ 8-Lead 3.00 x 3.00mm MLP ƒ 8-Bump 1.57 x 1.
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