Ambient Light Sensor ICs
Digital 16bit Serial Output Type
Ambient Light Sensor IC
No.11046ECT08
BH1780GLI
●Descriptions
2
BH1780GLI is a digital Ambient Light Sensor IC for I C bus interface. This IC is the most suitable to obtain the ambient light
data for adjusting LCD and Keypad backlight power of Mobile phone. It is possible to detect wide range at High resolution.
( 1 - 65535 lx ).
●Features
2
1) I C bus Interface （ f/s mode support, Slave address : "0101001" ）
2) Spectral responsibility is approximately human eye response
3) Illuminance to Digital Converter
4) Wide range and High resolution. （ 1 – 65535 lx ）
5) Low Current by power down function
6) 50Hz / 60Hz Light noise reject-function
7) 1.8V Logic input interface
8) No need any external parts
9) Light source dependency is little.
( ex. Incandescent Lamp. Fluorescent Lamp. Halogen Lamp. White LED. Sun Light )
10) Small measurement variation (+/- 20%)
11) The influence of infrared is very small.
●Applications
Mobile phone, LCD TV, NOTE PC, Portable game machine, Digital camera, Digital video camera, PDA,
LCD display
●Absolute Maximum Ratings
Parameter
Symbol
Limits
Units
Supply Voltage
Vmax
4.5
V
Operating Temperature
Topr
-40～85
℃
Storage Temperature
Tstg
-40～100
℃
SDA Sink Current
Imax
7
mA
Power Dissipation
Pd
120※
mW
※ 70mm × 70mm × 1.6mm glass epoxy board. Decreasing rate is 1.6mW/℃ for operating above Ta=25℃.
●Operating Conditions
Parameter
VCC Voltage
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
Symbol
Vcc
Ratings
Min.
Typ.
Max.
2.3
2.5
3.0
1/12
Units
V
2012.06 - Rev.C
