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FAN5343 - 6-LED Series Boost LED Driver

Description

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.

Features

  • Asynchronous Boost Converter.
  • VOUT up to 24V.
  • Internal Schottky Diode.
  • Up to 500mW Output Power.
  • 2.7V to 5.5V Input Voltage Range.
  • Single-Wire Digital Control Interface to Set LED Brightness Levels.
  • 32 Linear Steps.
  • Fixed Switching Frequency: 1.2MHz.
  • Soft-Start Capability.
  • Input Under-Voltage Lockout (UVLO).
  • Output Over-Voltage Protection (OVP).
  • Short-Circuit Detection.
  • Thermal Shutdown Protection (TSD).
  • Small 6-Lead.

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Full PDF Text Transcription

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FAN5343 — 6-LED Series Boost LED Driver with Integrated Schottky Diode and Single-Wire Digital Interface August 2010 FAN5343 6-LED Series Boost LED Driver with Integrated Schottky Diode and Single-Wire Digital Interface Features ƒ Asynchronous Boost Converter − VOUT up to 24V ƒ Internal Schottky Diode ƒ Up to 500mW Output Power ƒ 2.7V to 5.5V Input Voltage Range ƒ Single-Wire Digital Control Interface to Set LED Brightness Levels − 32 Linear Steps ƒ Fixed Switching Frequency: 1.2MHz ƒ Soft-Start Capability ƒ Input Under-Voltage Lockout (UVLO) ƒ Output Over-Voltage Protection (OVP) ƒ Short-Circuit Detection ƒ Thermal Shutdown Protection (TSD) ƒ Small 6-Lead 2.0 x 2.0 x 0.
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