The EVQ5864-LT-00A evaluation board is designed to demonstrate the capabilities of the MPQ5864-AEC1, a quad-channel, high-side power switch that can provide a nominal 0.8A load per channel from a 5V to 16V input voltage (V_INx, where x = A or B) range.

The MPQ5864-AEC1 supports both an internal current limit and a configurable, high-accuracy current limit via the I²C interface. This helps clamp the inrush current under short-circuit conditions, which improves system reliability. A selectable start-up slew rate also helps reduce the inrush current during start-up. In addition, a fast-off function can quickly turn off the device if the channel current increases sharply.

The MPQ5864-AEC1 communicates to the microcontroller unit (MCU) via the I²C interface. The device supports up to 6 addresses set by an external resistor.

With the help of an internal analog-to-digital converter (ADC), the channel currents, supply voltages, reference voltage, and output voltages can be obtained without additional external circuitry. Full diagnostic and protection features are integrated, including input over-voltage (OV) and under-voltage (UV), output OV for each channel, open-load and short-to-battery detection, over-current protection (OCP), short-circuit protection (SCP) with fast-off, and over-temperature shutdown.

Average/peak current detection improves diagnostic reliability in driver monitoring systems (DMS). The fault status can be reported via both the FT pin and the I²C.

The MPQ5864-AEC1 is available in a TQFN-17 (3mmx4mm) package. It is available in AEC-Q100 Grade 1 and compliant with AEC-Q100-012 Test Grade A.