
Maxim Integrated
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