General Description

The MAX8751 cold-cathode-fluorescent lamp (CCFL) inverter controller is designed to drive multiple CCFLs using the fixed-frequency, full-bridge inverter topology. The MAX8751 operates in resonant mode during striking and switches over to constant-frequency operation after all the lamps are lit. This unique feature ensures reliable striking under all conditions and reduces the transformer stress.

Features

♦ All n-Type MOSFET Low-Cost, Full-Bridge, Fixed-Frequency Inverter Topology for Highest Efficiency

♦ Resonant-Mode Striking Ensures Startup

♦ Strong Gate Drivers Can Easily Drive Large

  External MOSFETs for Multilamp Applications

♦ Adjustable DPWM Frequency with Sync and Phase-Shift Capability

♦ 10:1 Dimming Range with Accurate Analog Interface

♦ Lamp-Out Detection with Adjustable Timeout

♦ Secondary Current Limit with Adjustable Timeout

♦ Adjustable Secondary Voltage Limiting

♦ Adjustable DPWM Rise and Fall Time

♦ Wide Input Voltage Range (6V to 28V)

♦ 32-Pin TQFN Package

Applications

  LCD TVs

  LCD Monitors

  Notebook Computers

  Automotive Infotainment