BD60910GU_11 Datasheet, PDF (1/31 Pages) Rohm – White backlight LED Drivers for Small to Medium LCD Panels (Switching Regulator Type)

LED Drivers for LCD Backlights
White backlight LED Drivers
for Small to Medium LCD Panels
(Switching Regulator Type)
BD60910GU
No.11040EBT30
●Description
BD60910GU is maximum 8LED(minimum 4LED) serial LED driver with ALC (Auto Luminous Control) function.
Best match for mobile application that needs long battery life.
●Features
1) Boost DC/DC for LED back lighting
Drives maximum 8 to minimum 4 serial LEDs.
Integrated high voltage switching transistor
Soft start function.
Over voltage protection (Detect voltage is controllable)
Over current protection (2nd side)
VOUT short to GND protection
VOUT open protection.
2) Constant current driver for LED back lighting
Current step can be set in 7bit(0.2mA 128steps), and 8bit(0.1mA 256steps) in sloping.
Rise and fall time of sloping are set independently.
Iout max = 25.6mA
PWM brightness control by external input.
3) Auto Luminous Control (ALC)
Periodic ambient detection reduces sensor consumption current.
LED brightness can be controlled by 16steps ambient brightness level.
LED current for each ambient level is freely customizable.
SBIAS for sensor bias is integrated. (3.0V or 2.6V)
Photo Diode, Photo Transistor, Photo IC(Linear/ Logarithm) can be connected.
Automatic gain control built-in, so BH1600FVC can be connected directly.
4) Thermal shutdown (Auto-return type)
5) I²C BUS FS mode（max 400kHz）Write/Read
6) VCSP85H3(3.00mm x 3.00mm) Small Size CSP package
●Absolute Maximum Ratings (Ta=25 ℃)
Parameter
Symbol
Ratings
Unit
Pins
Maximum voltage 1
VMAX1
7
V except for VLED VOUT, SW
Maximum voltage 2
VMAX2
15
V VLED
Maximum voltage 3
Power Dissipation
VMAX3
Pd
40
1250 ^*1
V VOUT, SW
mW
Operating Temperature Range
Topr
-40 ~ +85
℃
Storage Temperature Range
Tstg
-55 ~ +150
℃
*1) Power dissipation deleting is 10mW/ ℃, when it’s used in over 25 ℃. It’s deleting is on the board that is ROHM’s standard.
Dissipation by LSI should not exceed tolerance level of Pd.
●Operating conditions (VBAT≥VIO, Ta=-40~85 ℃)
Parameter
Symbol
Ratings
Unit
VBAT input voltage
VIO pin voltage
VBAT
2.7~5.5
V
VIO
1.65~3.3
V
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2011.07 - Rev.B