BD1601MUV_11 Datasheet, PDF (1/13 Pages) Rohm – Backlight LED Driver for Small LCD Panels (Charge Pump Type)

LED Drivers for LCD Backlights
Backlight LED Driver
for Small LCD Panels (Charge Pump Type)
BD1601MUV
No.11040EBT22
●Description
The multi-level brightness control white LED driver not only ensures efficient boost by automatically changing the boost rate
but also works as a constant current driver in 64 steps, so that the driving current can be adjusted finely. This IC is best
suited to turn on white LEDs that require high-accuracy LED brightness control.
●Features
1) Built-in parallel LED driver for 4 to 6 lamps.
2) 64-step LED current adjust function.
3) Inter-LED relative current accuracy: 3% or less
4) Lighting/dimming control via a single-line digital control interface.
5) Automatic transition charge pump type DC/DC converter (×1,×1.5 and ×2).
6) High efficiency achieved (90% or more at maximum).
7) Various protection functions such as output voltage protection, over current limiter and thermal shutdown circuit are mounted.
8) Small QFN package.
●Applications
This driver is applicable for various fields such as mobile phones, portable game machines and white goods.
●Absolute Maximum Ratings
(Ta=25℃)
Parameter
Symbol
Ratings
Unit
Power supply voltage
VMAX
7
V
Operating temperature range
Topr
-30 ~ +85
℃
Storage temperature range
Tstg
-55 ~ +150
Power dissipation
Pd
700 ^(*1)
(*1) When a glass epoxy substrate (70mm × 70mm × 1.6mm) has been mounted,
this loss will decrease 5.6mW/℃ if Ta is higher than or equal to 25℃.
●Operating Conditions
(Ta = -30 ~ 85℃)
Parameter
Symbol
Ratings
℃
mW
Unit
Operating power supply voltage
VCC
2.7~5.5
V
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2011.06 - Rev.B