AL8860MP-13 Integrated Circuits (ICs)

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The AL8860MP-13 is a PMIC (Power Management Integrated Circuit) LED driver specifically designed to drive a single high-power LED up to 1A. This driver provides a Constant-Current Power (CCP) solution for driving a single high-power LED with high efficiency and reduced component count. The integrated output stage, consisting of a low-dropout regulator (LDO) and an over-temperature protection circuit, allows efficient and reliable operation. This device has a wide operating temperature range, from -40°C to +140°C, making it suitable for commercial applications.

AL8860MP-13 Application Field

The AL8860MP-13 is designed for commercial LED applications such as automotive headlights and daytime running light (DRL) systems. It is also suitable for a variety of other applications and can be used to drive a variety of low- and high-power LEDs, as well as off-road lamps, security and emergency lightings, and decorative lighting. Moreover, the AL8860MP-13 integrates the RSENSE function and pulse-by-pulse current limitation, so it is an ideal choice for both present and future LED applications.

AL8860MP-13 Working Principle

The AL8860MP-13 operates by regulating the output current of the LED driver. The operating principle is simple and straightforward. The device consists of two parts: a constant current regulator and a PWM oscillator. The constant current regulator regulates the output current of the LED driver as a function of the voltage provided to it. The PWM oscillator creates the Duty Cycle and Frequency modulation of the LED driver. The Duty Cycle and Frequency are then used to control the brightness and color of the LED, respectively.

The AL8860MP-13 controls the LED current in three different modes: DC Mode, Constant-Current Mode, and Dynamic Mode. In DC Mode, the LED current is controlled by a fixed DC voltage, while in Constant-Current Mode, the LED current is controlled by an internal current reference. In Dynamic Mode, the LED current is controlled by a pulse-width modulation (PWM) signal, enabling brightness and color modulation.

The AL8860MP-13 also has an over-temperature protection circuit, which is designed to shut down the output current when the device temperature reaches a predetermined limit, thus protecting both the LED driver and LED from thermal damage. Additionally, the device has an auto-recovery feature, which allows it to automatically resume operation when the device temperature returns to a normal range.

Conclusion

The AL8860MP-13 is a PMIC LED driver specifically designed to drive a single high-power LED up to 1A. It provides an efficient and reliable Constant-Current Power (CCP) solution and it is suitable for a variety of applications, including automotive headlights and daytime running lights (DRL) systems. It operates by regulating the output current of the LED driver, with three different modes: DC Mode, Constant-Current Mode, and Dynamic Mode. Furthermore, it has an over-temperature protection circuit and an auto-recovery feature, making it an ideal choice for both present and future LED applications.

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