AAT2880IMK-T1

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The AAT2880IMK-T1 is a highly integrated, multi-channel LED driver device that is capable of driving up to six independent strings of LEDs with high efficiency and low system cost. It offers a novel combination of features, such as programmable flash rate and brightness control, with no external components required. The device is targeted at applications such as automotive dashboard, LCD backlight modules and industrial LED displays.

The AAT2880IMK-T1 operates off a single +3.3 volt supply and provides a 6-bit resolution PWM output on each channel. It consists of a programmable voltage reference, low-side switching stages, oscillator and other logic circuits. It is able to operate from a supply voltage between 4.0 volts and 6.5 volts. The device is able to regulate up to 35mA driving current on each channel for end LED current adjustment. The PWM outputs can be programmed with a wide range of flash rates and brightness levels for each individual channel.

The AAT2880IMK-T1 is equipped with adjustable current limiting protection to prevent damage to the external LEDs due to over-current. This device has over-voltage protection and reverse current protection, preventing damage to the external LEDs due to reverse voltage. With the presence of these protection features, the device can operate safely in the most demanding automotive and LED display environments.

The working principle of the AAT2880IMK-T1 is that the device continuously regulates the current through the LED string in order to achieve the desired brightness level. This is done by adjusting the voltage reference voltage and/or the switching frequency of the low-side switching stage. The user can program the PWM output to provide different rates and levels of intensity, allowing for finer control of the LEDs. The device is designed to be highly efficient and consumes very low amounts of power.

In conclusion, the AAT2880IMK-T1 is an innovative and highly efficient multi-channel LED driver device which provides a cost effective solution for a wide range of automotive, LCD backlight module and industrial LED display applications. It has advanced protection features and is capable of driving up to six independent strings of LEDs with high efficiency and low system cost. With adjustable current limiting protection, over-voltage protection and reverse current protection, the device is able to operate safely in the most demanding automotive and LED display environments.

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