ROHM BH1621FVC Data Sheet User Guide
Summary
This is the technical note for the ROHM BH1621FVC ambient light sensor IC with analog current output. The sensor features a compact 1.6x1.6mm surface mount package, spectral sensitivity close to human eye response, and output current proportional to brightness. It operates from 2.4V to 5.5V supply with built-in shutdown function and two-step controllable output current gain. Applications include mobile phones, LCD TVs, laptop PCs, portable game consoles, digital cameras, and PDAs. Target users are electronics engineers designing backlight control and ambient light sensing solutions for battery-powered consumer devices.
Page 1 Text Content
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 m A
Power Dissipation Pd 165※ m W ※ 70mm × 70mm × 1.6mm glass epoxy board. Derating at 2.2 m W/℃ 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
© 2012 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM BH1621FVC Data Sheet User Guide
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 10 |
| File Size | 261.18 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What is the supply voltage range for the BH1621FVC?
The operating supply voltage ranges from 2.4V to 5.5V.
How is the sensor's gain mode controlled?
Gain mode is set via pins GC1 and GC2. Inputs 0,1 for H-Gain or 1,0 for L-Gain.
What is the typical wake-up time from shutdown?
The typical wake-up time from shutdown to H-Gain mode is 45 µs at 100 lx.
What applications is this sensor suitable for?
It is suitable for mobile phones, LCD TVs, laptops, digital cameras, and other LCD displays to adjust backlighting.