Backlight chip 3353 is a common optical sensor chip, mainly used for power management and light sensing detection of backlit displays. The following is the function and voltage of each pin:
1. VCC power input: The pin is connected to the positive terminal of the power supply of the backlight display to provide a stable working voltage for the backlight chip. The voltage range is typically 3.3V to 5V, depending on the power requirements of the backlit display.
2. GND ground wire: The foot is connected to the ground wire of the backlit display, which stabilizes the potential of the chip at 0V.
3. AOUT output: The foot is the output end of the backlight chip, which converts the detected optical signal into a digital signal output. The voltage range is usually from 0V to 3V, depending on the output requirements of the backlit display.
4. DOUT data output: The foot is connected to the data output of the backlight display, which is used to transmit the optical signal data detected by the backlight chip.
5. CSI Serial communication: The pin is connected to the serial communication interface of the backlit display for data interaction with the backlit controller. The voltage and data transmission format must be selected according to the specific application.
6. SHD serial clock: The pin is connected to the serial clock signal of the backlit display for synchronizing data transmission between the backlit chip and the backlit display. 7. STB clock: The foot is connected to the clock signal of the backlit display, which is used to control the working mode and data reading and writing of the backlit chip.
8.DLED: The foot is connected to the backlit display's DLED drive, which is used to control the brightness of the backlight.
9. Panasonic battery positive: The pin is connected to the Panasonic battery positive terminal of the backlit display to provide a stable operating voltage for the backlit chip. The voltage range is typically 3.7V to 5V, depending on the power requirements of the backlit display.