G2546BR41U 低成本4-CH LED驱动器
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.
