BD6142AMUV
BD6142AMUV is 8-Channel White LED Driver manufactured by ROHM.
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 30m A. 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
High accuracy & good matching current drivers 8ch (MAX30m A/ch) Integrated 50V power Nch MOSFET Soft Start function Drive up to 11 LEDs in series, 8 strings in parallel 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
- Thermal shutdown
- UVLO Analog Brightness Control
- Key Specifications
Operating power supply voltage range: 4.2V to 27.0V
LED maximum current:
30m A (Max.)
Quiescent Current:
1.6µA (Typ.)
Switching frequency:
1.25MHz(Typ.)
Operating temperature range:
-40℃ to +85℃
- Package W(Typ.) x D (Typ.) x H(Max.)
VQFN024V4040
4.00mm x 4.00mm x 1.00mm
VQFN024V4040
Figure 1. Package
- Applications All medium sized LCD equipments, Backlight of Notebook PC, net book, monitor, light, Portable DVD player, light source etc.
- Typical Application Circuit (8 Parallel)
10µF
7V to27V 10µH
2.2µ F/50V
2.2µF
VOUT
10 serial x 8 parallel (80pcs)
2.1V to VIN
RESET
LX LX ENAB LE
FAULT
VDC OV...
