BD6142AMUV Datasheet, PDF (1/28 Pages) Rohm – White Backlight LED Driver for Medium to Large LCD Panels (Switching Regulator Type)

LED Drivers for LCD Backlights
White Backlight LED Driver
for Medium to Large LCD Panels
(Switching Regulator Type)
BD6142AMUV
No.11040EAT11
●Description
This IC is white LED driver IC with PWM step-up DC/DC converter that can boost max 41V and current driver that can drive
max 30mA. The wide and precision brightness can be controlled by external PWM pulse. This IC has very accurate current
drivers, and it has few current errors between each strings. So, it will be helpful to reduce brightness spots on the LCD
panel. Small package is suited for saving space.
●Features
1) High efficiency PWM step-up DC/DC converter (fsw=typ 1.25MHz, 0.60MHz ~ 1.6MHz)
2) High accuracy & good matching current drivers 8ch (MAX30mA/ch)
3) Integrated 50V power Nch MOSFET
4) Soft Start function
5) Drive up to 11 LEDs in series, 8 strings in parallel
6) Wide input voltage range (4.2V ~ 27V)
7) Rich safety functions
・Over-voltage protection
・External SBD open detect / Output Short protection
・Over current limit
・CH Terminal open / GND short protect
・CH over voltage protect / LED short protect
・hermal shutdown
・UVLO
8) Analog Brightness Control
9) Small & thin package (VQFN024V4040) 4.0 × 4.0 × 1.0mm
●Applications
All medium sized LCD equipments, Backlight of Notebook PC, net book, monitor, light,
Portable DVD player, light source etc.
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
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2011.07 - Rev.A