Ambient Light Sensor IC Series Analog Current Output Type Ambient Light Sensor IC BH1621FVC No.12046EDT02 Descriptions BH1621FVC is an analog current output ambient light sensor. This IC 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 Features 1) Compact surface mount package 1.6 1.6 mm 2) Spectral sensitivity close to human eyes sensitivity. 3) Output current in proportion to brightness. 4) Supply voltage operates from 2.4V to 5.5V 5) Built-in shutdown function 6) 2 steps controllable output current gain. 7) 1.8V logic input interface 8) Low sensitivity variation (+/-15%) Applications Mobile phone, LCD TV, PDP TV, Laptop PC, Portable game console, Digital camera, Digital video camera, PDA, LCD display Absolute Maximum Ratings Parameter Symbol Ratings 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 Ratings Parameter Symbol Units Min. Typ. Max. VCC Voltage Vcc 2.4 3.0 5.5 V www.rohm.com 2012.02 - Rev.D 1/9 2012 ROHM Co., Ltd. All rights reserved. BH1621FVC Technical Note Electrical Characteristics ( VCC = 3.0V, Ta = 25, unless otherwise noted ) Limits Parameter Symbol Units Conditions Min. Typ. Max. Supply Current1 ( Operate ) Icc1 51 74 97 A Ev=100 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 Iout1 - - 0.2 A Ev=0 lx ( Dark Current ) IOUT Output Current2 Iout2 51 60 69 A Ev=100 lx ( H-Gain Mode ) Peak Wave Length p - 560 - nm Incandescent/Fluorescent rIF - 1.0 - timesEv=100 lx Light Current Ratio Ev=100 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 - 45 128 s Ev=100lx Gain Ratio rHL - 9.5 10 timesEv=100lx H-Gain Mode / L-Gain Mode White LED is used as optical source www.rohm.com 2012.02 - Rev.D 2/9 2012 ROHM Co., Ltd. All rights reserved.