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www.rohm.com
2009.04- Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
Ambient Light Sensor IC Series
Digital 16bit Serial Output Type
Ambient Light Sensor IC
BH1750FVI
●Descriptions
BH1750FVI is an digital Ambient Light Sensor IC for I
2
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
1) I
2
C bus Interface ( f / s Mode Support )
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) It is possible to select 2 type of I
2
C slave-address.
11) Adjustable measurement result for influence of optical window
( It is possible to detect min. 0.11 lx, max. 100000 lx by using this function. )
12) Small measurement variation (+/- 20%)
13) The influence of infrared is very small.
●Applications
Mobile phone, LCD TV, NOTE PC, Portable game machine, Digital camera, Digital video camera, Car navigation, 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 260
※
mW
※ 70mm × 70mm × 1.6mm glass epoxy board. Derating in done at 3.47mW/℃ for operating above Ta=25℃.
●Operating Conditions
Parameter Symbol Min. Typ. Max. Units
VCC Voltage Vcc 2.4 3.0 3.6 V
I
2
C Reference Voltage VDVI 1.65 - VCC V
No.09046EBT01
