Ambient Light Sensor ICs Analog Current Output Type Ambient Light Sensor IC BH1680FVC No.12046EBT14 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 SymbolMin. Typ. Max. Units VCC Voltage Vcc 2.4 3.0 5.5 V Electrical Characteristics ( VCC = 3.0V, Ta = 25, unless otherwise noted ) Parameter SymbolMin. Typ. Max. Units Conditions Supply Current1 ( Operate ) Icc1 51.9 75 105 A Ev=10 lx (H-Gain Mode) Supply Current2 ( 0 lx ) Icc2 4.5 9 13.5 A Ev=0 lx (H-Gain Mode) Supply Current3 ( Shutdown ) Icc3sd - 0.2 0.4 A V =V =0 No Input Light GC1 GC2 IOUT Output Current1(Dark Current) Iout1 - - 0.2 A Ev=0 lx IOUT Output Current2 Iout2 51.9 61 70.1 A Ev=10 lx (H-Gain Mode) Peak Wave Length p - 530 - nm Ev=10 lx, RL=220k Saturated Output Voltage V 2.6 2.9 3.0 V OMAX (H-Gain Mode) GC1,GC2 Input L Voltage V 0 - 0.4 V IL GC1,GC2 Input H Voltage1 V 1.4 - Vcc V 2.4V VCC 3.6V IH1 GC1,GC2 Input H Voltage2 V 2.0 - Vcc V 3.6V VCC 5.5V IH2 Shutdown H-Gain Mode Wake-up Time twu - 13 52 s Ev=100lx Gain Ratio rHM 8 10 12 times Ev=10lx H-Gain Mode/M-Gain Mode Gain Ratio rML 8 10 12 times Ev=10lx M-Gain Mode/L-Gain Mode White LED is used as optical source www.rohm.com 2012.02 - Rev.B 1/8 2012 ROHM Co., Ltd. All rights reserved. BH1680FVC Technical Note Reference Data H-Gain Fluorescent M-Gain 10000 Light 1.2 1000 Incandescent 1.0 L-Gain Light 100 0.8 Halogen Light 10 0.6 1 Kripton Light 0.4 0.1 Artifical Sun Light 0.2 0.01 White LED 0.001 0.0 0.01 10 1,000 100,000 400 500 600 700 800 900 1000 1100 00.511.5 2 Wavelength nm Illuminance lx Ratio Fig.2 Light Source Dependency Fig.3 Illuminance IOUT Fig.1 Spectral Response Characteristics ( Fluorescent Light is set to 1 ) 1.2 1.2 1 1.0 1.0 1pin 0.8 0.8 - + 0.1 + 0.6 0.6 H-Gain 1pin - 0.4 0.4 0.01 - + M-Gain 0.2 0.2 + L-Gain + 0.001 0.0 0.0 SD -40 -20 0 2040 6080 100 -90 -60 -30 0 30 60 90 -90 -60 -30 0 30 60 90 Ta Angle deg Angle deg Fig.4 Directional Characteristics 1 Fig.5 Directional Characteristics 2 Fig.6 Ta IOUT ( 0 lx ) 1.4 1.4 100 1.2 1.2 H-Gain 10 M-Gain 1 1 L-Gain 1 0.8 0.8 0.6 0.6 SD 0.1 0.4 0.4 0.01 0.2 0.2 0 0.001 0 -40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100 2 2.5 3 3.5 4 4.5 5 5.5 6 Ta Ta VCC V Fig.7 Ta ICC ( 0 lx ) Fig.8 IOUT Temperature dependency Fig.9 IOUT VCC dependency ( 10 lx ) 1000 100 L-Gain 10 M-Gain H-Gain 1 10 100 1000 Illuminance lx Fig.10 Illuminance Wake up Time www.rohm.com 2012.02 - Rev.B 2/8 2012 ROHM Co., Ltd. All rights reserved. Ratio Ratio ICC uA Wake up Time us Ratio Ratio Ratio IOUT uA IOUT uA