BH1772GLC Datasheet, PDF (1/31 Pages) Rohm – 1 Chip Optical Proximity Sensor + Ambient Light Sensor IC

Ambient Light Sensor ICs
1 Chip Optical Proximity Sensor +
Ambient Light Sensor IC
BH1772GLC
No.11046EBT12
●Descriptions
BH1772GLC is the IC into which optical proximity sensor and digital ambient light senor are unified. Proximity sensor part
detects the human or object approach by reflection of infrared LED(IrLED) light. Ambient light sensor part can detect the
wide range illuminance from the dark up to under direct sun light. The illuminant intensity of LCD display and keypad can be
adjusted, so lower current consumption or higher visibility are possible.
●Features
1) Correspond to I²C bus interface ( f/s mode & Hs mode support )
2) Low Current by power down function
3) Correspond to 1.8V logic interface
4) ALS spectral responsibility is approximately human eye response ( Peak wavelength : typ. 550nm )
5) Correspond to wide range of light intensity ( 1-65535 lx range )
6) Rejecting 50Hz/60Hz light noise (ALS function)
7) Detection range of proximity sensor is around 10 - 100mm (configurable by I²C bus)
8) Built in ambient light cancelation (Proximity sensor function)
9) Built in configurable IrLED current driver
●Applications
Mobile phone, DSC, Portable game, Camcoder, Car navigation, PDA, LCD display etc.
●Absolute Maximum Ratings ( Ta = 25℃ )
Parameter
Symbol
Ratings
VCC, Supply Voltage
SDA,SCL,GNDNC Terminal Voltage
LEDC,INT Terminal Voltage
Vccmax
4.5
VSDAmax, VSCLmax,
VGNDNCmax
4.5
VLEDCmax, VINTmax
7
Operating Temperature
Topr
-40～85
Storage Temperature
Tstg
-40～100
SDA, INT Sink Current
Imax
7
Power Dissipation
Pd
250^※
※ _{70mm × 70mm × 1.6mm glass epoxy board. Decreasing rate is 3.33mW/℃ for operating above Ta=25℃}
Units
V
V
V
℃
℃
mA
mW
●Operating Conditions
Parameter
VCC Voltage
LEDC Terminal Voltage
Symbol
Vcc
Vledc
Ratings
Min.
Typ. Max.
2.3
2.5
3.6
0.7
2.5
5.5
Units
V
V
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2011.06 - Rev.B