MAX8751 Overview
Key Specifications
Mount Type: Surface Mount
Pins: 32
Max Voltage (typical range): 28 V
Max Operating Temp: 85 °C
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.
Key Features
- ensures reliable striking under all conditions and reduces the transformer stress
- The MAX8751 can drive large power MOSFETs typically used in applications where one power stage drives four or more CCFL lamps in parallel
- An internal 5.35V linear regulator powers the MOSFET drivers and most of the internal circuitry
- The controller operates over a wide input-voltage range (6V to 28V) with high power to light efficiency
- The MAX8751 achieves a 10:1 dimming range by “chopping” the lamp current on and off using the digital pulsewidth modulation (DPWM) method
