BD6086GU_11 ROHM [Rohm], BD6086GU_11 Datasheet - Page 66

• Manufacturer Part Number: BD6086GU_11
• Description: 13LEDs ALC* Flash and Illumination
• Manufacturer: ROHM [Rohm]

● The explanation of Auto Lighting Control
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com
BD6086GU
Dimming of LCD backlight and ON/OFF control of key backlight, are possible in the basis of the data detected by external
ambient light a sensor.
1. Auto Lighting Control ON/OFF
2. Sensor I/F
sensor
・ ince it has the bias adjustment function for sensors, ADC with an average filter, a gain offset adjustment function, and a
・ mbient light is changed into brightness data by digital processing. The external output of data is possible at I
・ onversion on LED current can choose a built-in initial table and a built-in user setting table.
・ n LED driver is with a current value change slope function, and Auto Luminous control without sense of incongruity is
・ N/ off of the key back light can be controlled automatically by the brightness.
・ It is independent of a back light / key back light section, and effective / non-effect can be set up and use only by reading
・ It is possible to supply bias voltage to a sensor using SBIAS.
・ The external resistance for I/V conversion is adjusted
LOG conversion function, an Ambient light can be broadly chosen from Photo Diode, Photo Transistor, Photo IC (a
linear output / LOG output), etc.
possible for it.
of illuminance information is possible.
Output voltage (VoS) can be adjusted by register setup.
according to the property of a sensor.
Bit ： ALCEN
Bit ： VSB
SBIAS
SSENS
GC1
GC2
Output voltage control
Gain control ON/OFF
Gain control
SBIAS
ADC
Sensor offset adjust
Sensor Gain adjust
-value adjust
Measured
processing LOG
Equalization
conversion
LIN/LOG
Brightness data
66/80
Conversion table
Current value
conversion
ON/OFF control
Detect Hysteresis
Detect threshold
Change time setup
Mode change
processing
Slope
： Effective also in ALC functional the case of not using it
Current control data
PWM Permission
Periodic
Current value
Slope time
MAX DUTY
Slope time
Current value
processing
adjustment
PWM
setup
Ambient light
WPWMIN
OSYNC
WLED
KBLT
Technical Note
2011.04 - Rev.A
Back light
Back light
LCD
key
2
C.