BD1604MUV_11 Datasheet, PDF (1/11 Pages) Rohm – Backlight LED Drivers for Small LCD Panels (Charge Pump Type)

LED Drivers for LCD Backlights
Backlight LED Drivers
for Small LCD Panels (Charge Pump Type)
BD1604MUV, BD1604MVV
No.11040EBT23
●Description
This LSI is a 4 white LED driver for small LCD backlight. At the charge pump type, the number of external devices is
minimized.
●Features
1) 4 parallel LED driver is mounted.
2) The LED current can be controlled via an external resistance.
3) Maximum current is 120mA (30mA × 4).
4) LED1 to LED4 can be turned on or off via an external control pin.
5) The relative current accuracy among LEDs (LED1 to LED4) is 3%.
6) Automatically transition to each mode (×1.0, ×1.5, ×2.0).
7) High efficiency (90% or more at maximum) is achieved.
8) Various protection functions such as output voltage protection function, current overload limiter and thermal shutdown
circuit are mounted.
●Applications
This driver provides for:
- Backlight using white LED
- Auxiliary lights for mobile phone cameras and simplified flash
●Lineup
Parameter
BD1604MUV
BD1604MVV
Number of LED channels
4ch
4ch
Maximum current
Package
120mA
VQFN016V3030
3.00mm×3.00mm
120mA
SQFN016V4040
4.00mm×4.00mm
●Absolute Maximum Rating (Ta=25℃)
Parameter
Symbol
Ratings
Unit
Power supply voltage
Vmax
7
V
BD1604MUV
Allowable loss
Pd
BD1604MVV
700 *¹
mW
780 *²
Operating temperature range
Topr
－30~85
℃
Storage temperature range
Tstr
－55~150
℃
*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℃.
*2 When a glass epoxy substrate (70mm×70mm×1.6mm) has been mounted, this loss will decrease 6.24mW/℃ if Ta is higher than or equal to 25℃.
●Recommended Operation Range
Parameter
Symbol
Limits
Unit
Condition
Operating supply voltage
VBAT
2.7～5.5
V VBAT voltage
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2011.06 - Rev.B