AL8807QMP-13 Integrated Circuits (ICs)

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The AL8807QMP-13 is a Powerful, single-channel pulse width modulation (PWM) current-controlled, switch-mode driver especially suitable for switching or dimming high-power LEDs. This device can be used in a variety of applications, from the lighting of displays to the construction of backlighting systems. It offers high efficiency, leading to low light output being maintained even in low voltages, making it ideal for very small systems. With its high switching frequency, it can be used in applications where standard PWM chip controllers would struggle due to limited switching speeds.

The AL8807QMP-13 has 3 basic operating modes: manually triggered, automatic, and programmable. In the manual mode the LED(s) are switched ON/OFF or pulsed with constant current. In the automatic mode, the LED(s) can be switched ON/OFF according to a defined voltage threshold in the I/O line. Finally, in the programmable mode, the LED(s) can be driven directly by up to 8 independent internal channels.

The AL8807QMP-13 works by regulating its output current based on the value of an external current sensing resistor. The device has two control inputs, called ISet and VSense, which adjust the output current according to their settings. ISet provides the reference voltage used to adjust the current and VSense sets the current level. A linear feedback loop is used to ensure accurate current regulation and high output accuracy.

The AL8807QMP-13 includes a thermal shutdown circuit that shuts down the device in case of over-temperature. It also features over-voltage, under-voltage, and over-current protection to ensure that the device is not damaged in case of these common power issues. Another useful feature is the Digital Closed Loop feedback control, which helps the device adjust to various load conditions and improves output accuracy.

The high switching frequency and wide dimming range of the AL8807QMP-13 make it an ideal solution for LED-based applications such as display backlighting, automotive lighting, general lighting, television/monitor backlighting and industrial applications. Its low power consumption and high efficiency make it suitable for cost-effective designs in regulated and low-power designs. Additionally, its easy and fast integration into systems makes it suitable for applications that require a fast implementation or an integration into pre-existing designs.

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