MP38116DQ-LF-Z

The MP38116DQ-LF-Z is a power management integrated circuit (PMIC), specifically a DC DC switching regulator, designed to convert an input voltage of a motor vehicle system into one output voltage. This device is designed for automotive applications, offering protection features tailored for the specific requirements of onboard automobile power systems.

The MP38116DQ-LF-Z operates by regulating the current flow to the output by modulating the duty cycle of the switching transistor on and off. This allows it to maintain the voltage at a steady level, despite any input voltage or load variations. It also provides a variety of protection features including over voltage, current limiting, thermal protection, and short circuit protection.

This device is designed to be used in applications where efficient power supply regulation is desired. Typical applications include automotive chargers, computer peripheral power sources, and reverse polarity protection. The output voltage and current capabilities of the device are adjustable, making it easily applicable to different power requirements.

This particular device includes an on-chip over voltage protection (OVP) circuit, allowing the device to sustain an output current up to the OVP limit without damage. It includes an adjustable programmable current limit of 1.2A to 4A, and a programmable under-voltage lockout (UVLO) of 4.5V to 7V. An external resistor is used to program the switching frequency of the part, as well as other parameters such as the minimum duty cycle and avalanche protection.

The thermal features of the device are designed to protect its integrated components from permanent damage due to excessive operating temperature. If the internal temperature of the device exceeds 125°C, the device will enter a thermal protection mode which will reduce the current consumption of the device. This mode will also cause an intermittent shutdown of the switching transistor until the temperature returns to an acceptable level.

The MP38116DQ-LF-Z is an efficient, versatile, and reliable power management device specifically designed for automotive applications. With its adjustable output current limit, on-chip thermal protection, and integrated protection features, the device is an ideal choice for reliable power management in a variety of automotive applications.