General Description

　　The G2546B is a high-efficiency 4-channel WLED

　　driver. It is designed for LCD panel which employs a

　　WLED array as the lighting source. The G2546B has

　　a wide input voltage range from 2.5V to 24V with an

　　integrated boost converter. It drives 4 strings in parallel

　　and supports up to 12 pieces of LEDs per string.

　　The current of each string is adjustable from 6mA to

　　30mA. In addition, G2546B is integrated with

　　43V/2.0A 0.25Ω power MOSFET, and the boost driver

　　automatically adjusts its output voltage to optimize the

　　WLED forward voltage for better efficiency. Moreover,

　　the internal sink current between each channel can

　　reach a typical of ±1.5% current mismatching for excellent

　　brightness uniformity.

　　G2546B supports 3 dimming methods including DCmode,

　　Mixed-mode and Direct PWM-mode that have

　　been widely adopted in nowadays NB display application.

　　The G2546B is available in a TQFN3X3-16 package.