Recently, New Japan Wireless has developed the backlight LED driver NJW4605, which is most suitable for small and medium-sized LCD displays of automotive electronic devices such as car navigation monitors and car rear seat entertainment system displays.
The NJW4605 is a driver IC developed for high-efficiency driving of backlight LEDs. It consists of a 3-circuit constant current driver and a step-up switching regulator that can drive up to 24 LEDs. In addition, a microprocessor can be used to control LED driving and detection of abnormalities through the I2C bus.
The NJW4605's brightness adjustment has a minimum accuracy of 0.1% (1000:1) and is capable of demonstrating subtle changes in brightness. In addition, the LED current accuracy and current error between the channels have reached a high precision of ± 2% (max.), and there is no color unevenness caused by the difference in LED characteristics, and it is most suitable for LCD liquid crystals with special emphasis on color expression. board.
The product automatically adjusts the brightness function so that it does not burden the CPU, and achieves natural brightness adjustment; automatically adjusts the brightness to generate pulse adjustment signals in 1024 steps, without burdening the CPU, thus achieving natural softness. The brightness changes.
In addition, the external synchronization function can prevent radio waves from interference such as radios and mobile phones. The built-in switching regulator in the NJW4605 can work in synchronization with an external clock, and can input a frequency clock signal from a microprocessor such as a CPU, thus preventing radio and mobile phones, etc. Interference from radio waves. This feature of this product is most suitable for automotive electronic devices such as car navigation systems.
NJW4605 has a wide operating voltage range: (Wide Input Range *1): 6.0V ~ 30V; operating temperature range is -40 ° C ~ +105 ° C; switching frequency is 300 kHz ~ 1 MHz; also has PWM brightness adjustment function; NJW4605 uses SSOP32 (11.0 x 7.6 x 1.25mm) package.
The NJW4605 is a driver IC developed for high-efficiency driving of backlight LEDs. It consists of a 3-circuit constant current driver and a step-up switching regulator that can drive up to 24 LEDs. In addition, a microprocessor can be used to control LED driving and detection of abnormalities through the I2C bus.
The NJW4605's brightness adjustment has a minimum accuracy of 0.1% (1000:1) and is capable of demonstrating subtle changes in brightness. In addition, the LED current accuracy and current error between the channels have reached a high precision of ± 2% (max.), and there is no color unevenness caused by the difference in LED characteristics, and it is most suitable for LCD liquid crystals with special emphasis on color expression. board.
The product automatically adjusts the brightness function so that it does not burden the CPU, and achieves natural brightness adjustment; automatically adjusts the brightness to generate pulse adjustment signals in 1024 steps, without burdening the CPU, thus achieving natural softness. The brightness changes.
In addition, the external synchronization function can prevent radio waves from interference such as radios and mobile phones. The built-in switching regulator in the NJW4605 can work in synchronization with an external clock, and can input a frequency clock signal from a microprocessor such as a CPU, thus preventing radio and mobile phones, etc. Interference from radio waves. This feature of this product is most suitable for automotive electronic devices such as car navigation systems.
NJW4605 has a wide operating voltage range: (Wide Input Range *1): 6.0V ~ 30V; operating temperature range is -40 ° C ~ +105 ° C; switching frequency is 300 kHz ~ 1 MHz; also has PWM brightness adjustment function; NJW4605 uses SSOP32 (11.0 x 7.6 x 1.25mm) package.
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