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2012.02 - Rev.B
© 2012 ROHM Co., Ltd. All rights reserved.
Ambient Light Sensor ICs
Analog Current Output Type
Ambient Light Sensor IC
BH1680FVC
●Descriptions
BH1680FVC is an analog current output ambient light sensor. This IC can detect the illuminance from 0lx to 50000lx. It is the
most suitable to obtain the ambient light data for adjusting LCD and Keypad backlight of Mobile phone for power saving and
better visibility. It is suitable also for the use of optical window that the visible light transmission is low because of the high
sensitivity type.
●Features
1) Compact surface mount package 1.6 x 1.6 mm
2) Output current in proportion to brightness
3) Suitable for optical window that the visible light transmission is low (High sensitivity type)
4) The influence of infrared is very small by an infrared cut filter
5) Supply voltage operates from 2.4V to 5.5V
6) Built-in shutdown function
7) 3 steps controllable output current gain
8) 1.8V logic input interface
9) Low sensitivity variation (+/-15%)
●Applications
Mobile phone, LCD TV, PDP TV, Laptop PC, Portable game console, Digital camera, Digital video camera, LCD display
●Absolute Maximum Ratings
Parameter Symbol Limits Units
Supply Voltage Vmax
7 V
Operating Temperature Topr -40~85 ℃
Storage Temperature Tstg -40~100 ℃
Iout Current Ioutmax 7.5 mA
Power Dissipation Pd 165
※
mW
※ 70mm × 70mm × 1.6mm glass epoxy board. Derating at 2.2 mW/℃ for operating above Ta=25℃.
●Operating Conditions
Parameter Symbol Min. Typ. Max. Units
VCC Voltage Vcc 2.4 3.0 5.5 V
●Electrical Characteristics ( V
CC = 3.0V, Ta = 25℃, unless otherwise noted )
Parameter Symbol Min. Typ. Max. Units Conditions
Supply Current1 ( Operate ) Icc1 51.9 75 105 µA Ev=10 lx (H-Gain Mode)
※
Supply Current2 ( 0 lx ) Icc2 4.5 9 13.5 µA Ev=0 lx (H-Gain Mode)
Supply Current3 ( Shutdown ) Icc3sd - 0.2 0.4 µA V
GC1
=V
GC2
=0 No Input Light
IOUT Output Current1(Dark Current) Iout1 - - 0.2 µA Ev=0 lx
IOUT Output Current2 Iout2 51.9 61 70.1 µA Ev=10 lx (H-Gain Mode)
※
Peak Wave Length λp - 530 - nm
Saturated Output Voltage V
OMAX
2.6 2.9 3.0 V
Ev=10 lx, RL=220kΩ
(H-Gain Mode)
※
GC1,GC2 Input ‘L’ Voltage V
IL
0 - 0.4 V
GC1,GC2 Input ‘H’ Voltage1 V
IH1
1.4 - Vcc V 2.4V ≦ VCC ≦ 3.6V
GC1,GC2 Input ‘H’ Voltage2 V
IH2
2.0 - Vcc V 3.6V ＜ VCC ≦ 5.5V
Wake-up Time twu - 13 52 µs
Shutdown → H-Gain Mode
Ev=100lx
※
Gain Ratio
H-Gain Mode/M-Gain Mode
rHM 8 10 12 times Ev=10lx
※
Gain Ratio
M-Gain Mode/L-Gain Mode
rML 8 10 12 times Ev=10lx
※
※ White LED is used as optical source
No.12046EBT14
