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.
The BH1621FVC is an analog current‑output ambient light sensor designed for mobile phones, LCD TVs, laptops, digital cameras and other devices that need to adjust backlight based on ambient illumination. It converts light intensity to a proportional output current, enabling power‑saving and visibility improvements.
The note details the sensor's compact 1.6 × 1.6 mm package, supply voltage range of 2.4 V to 5.5 V, output current up to 7.5 mA, and two selectable gain modes (H‑Gain and L‑Gain) set via pins GC1 and GC2. Electrical characteristics, block diagram, terminal descriptions, recommended external components, and cautions for handling are also included.
| Supply voltage range | 2.4 V – 5.5 V |
|---|---|
| Maximum output current | 7.5 mA |
| Power dissipation | 165 mW |
| Peak wavelength | 560 nm |
| Gain ratio (H‑Gain / L‑Gain) | 9.5 – 10 times |
| Absolute maximum supply voltage | 7 V |
The device operates with a supply voltage between 2.4 V and 5.5 V.
Gain mode is set by the logic levels on pins GC1 and GC2: 0‑0 = Shutdown, 0‑1 = H‑Gain, 1‑0 = L‑Gain, 1‑1 = Shutdown.
The maximum output current is 7.5 mA.