AL8861MP-13 Integrated Circuits (ICs)

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The AL8861MP-13 is power management integrated circuit (PMIC) used mainly as a LED driver. It is developed using the latest CMOS technologies and provides over-voltage, over-current, and short-circuit protection. It is capable of driving three independent LEDs with a peak current up to 100mA. This device provides high accuracy current control and is suitable for automotive and industrial LED applications.

The AL8861MP-13 features two high-side power switches and three low-side current source outputs. The low-side outputs have dedicated pulse-width modulation (PWM) control pins which allow the LED current regulation to be adjusted externally. These outputs are protected against short-circuits, over-temperature, and over-current. The external PWM control can be used to dim the LED current down to 0%. The high-side switching outputs have overvoltage protection that prevents the LED voltage and current peaks from exceeding the absolute maximum ratings of the device.

The AL8861MP-13 is designed with a low power consumption operational mode. When it is powered off, the LED current is turned off, minimizing the possibility of LED failure. The device has a low dropout voltage of 0.8V, which reduces power dissipation at high-current levels. It also features low quiescent current, providing outstanding power efficiency for automotive and industrial LED applications.

The input voltage range of the AL8861MP-13 is between 3V and 28V, allowing for power supplies with a wide range of voltages. The device includes integrated protection features, such as thermal shutdown, current limit, and undervoltage lockouts. The built-in switching regulators reduce the amount of external components, helping to minimize the bill of materials cost.

The working principle of the AL8861MP-13 is fairly simple. The input voltage is supplied to the power switches, and the PWM signal is applied to the gate node of the power switch. This allows the device to regulate the LED current in accordance with the PWM duty cycle. The internal circuitry of the device then monitors the voltage and current at the output, providing safe operation at all times.

The AL8861MP-13 is an excellent choice for automotive and industrial LED applications thanks to its high accuracy current control, low voltage dropout, and low power consumption. The integrated protection features ensure safe operation and the reduction of external components helps to reduce the bill of materials cost. With the ability to drive up to three independent LEDs, the AL8861MP-13 is the ideal LED driver for automotive and industrial LED applications.

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