MPQ77240FSGLTE-AEC1

The MPQ77240FS-AEC1 is a quad-channel, smart, high-side power switch for nominal currents up to 0.8A load per channel. The device can support a 5V to 16V input voltage (VINx) range and two different input power rails using its separated power supply design. Back-to-back MOSFET configuration enables short-to-battery protection up to 26V. With a small, 180mΩ on resistance (RDS(ON)) in a tiny TQFN-17 (3mmx4mm) package, the MPQ77240FS-AEC1 provides a highly efficient, compact solution for camera load switch applications. The MPQ77240FS-AEC1 features a configurable, high-accuracy current limit via the I2C interface. This helps to clamp the inrush current under short-circuit conditions, which improves system reliability. A selectable start-up slew rate also helps to reduce the inrush current during start-up. In addition, fast-off functionality can quickly turn off the device if the channel current increases sharply. The MPQ77240FS-AEC1 communicates to the microcontroller unit (MCU) via the I2C interface. The device supports up to six addresses, set via an external resistor. With the help of an internal analog-to-digital converter (ADC), the channel currents, supply voltages, reference voltage (VREF), and output voltages (VOUT) can be obtained without additional external circuitry. Full diagnostics and protections are developed for the device, including input over-voltage (OV) and under-voltage (UV) detection, output OV for each channel, open-load and short-to-battery detection, over-current protection (OCP), fast-off short-circuit protection (SCP), and over-temperature (OT) shutdown. Average and peak current detection improves diagnostic reliability in driver monitoring systems (DMS). Fault statuses can be reported via both the FT pin and I2C interface. As a functional safety device, the MPQ77240FS-AEC1 is AEC-Q100 qualified, designed as an ASIL-B compliant part with well-developed monitoring features, and supports independent power rails. In addition, an 8-bit ADC is integrated to support the readout of real-time current and voltage of each output. With robust diagnostics via the internal 8-bit ADC, the safety coverage can be significantly increased to achieve ASIL-D compliance. Related safety documentation is also provided to aid functional safety design. The MPQ77240FS-AEC1 is available in a TQFN-17 (3mmx4mm) package with wettable flanks.