MPQ77240FS-AEC1

MPQ77240FS-AEC1

MPSafe^TM, ASIL-B, 16V, 180mΩ, 0.8A, Quad-Channel, High-Side Switch, AEC-Q100 Qualified

Description

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 (V_INx) range and two different input power rails due to its separated power supply design. Back-to-back MOSFET configuration enables short-to-battery protection up to 26V. With a small, 180mΩ on resistance (R_DS(ON)), 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 startup. 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 6 addresses, set via an external resistor.

With the help of an internal analog-to-digital converter (ADC), the channel currents, supply voltages, reference voltage (V_REF), and output voltages can be obtained without additional external circuitry. Full diagnostics and protection 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 and ASIL-B compliant, with well-developed monitoring and diagnostics via the ADC. Related safety documentation is also provided to aid functional safety design.

The MPQ77240FS-AEC1 is available in a tiny TQFN-17 (3mmx4mm) package.

Features & Benefits

Designed for Automotive Applications:
- 5V to 16V Input Voltage (V_INx) Range
- 26V Short-to-Battery Protection with Back-to-Back MOSFET
- Available in AEC-Q100 Grade 1
180mΩ On-State Channel Resistance (R_DS(ON)) for Cooler Thermals
Reduces Board Size:
- Available in a TQFN-17 (3mmx4mm) Package with Wettable Flanks
High-Accuracy Current Sense Capability: ±3% at 1A
5μA Low Standby Current Extends Vehicle Battery Life
Vast Flexibility:
- Separate Power Supply Design Supports Two Power Rails
- Supports Output with Parallel Channels
- Configurable Current Limit and Soft Start (SS)
Full Diagnostics and Protections:
- Fault Reporting via the FT Pin and I²C
- I²C Supports 6 Addresses
- Input Over-Voltage (OV)/Under-Voltage (UV) and Output OV Detection
- Open-Load and Short-to-Battery Detection
- Peak and Real-Time Current Sensing
- Channel Short-Circuit Protection (SCP) and Over-Temperature Protection (OTP)
- AEC-Q100-012 Test Grade 1 Compliant
Functional Safety:
- Integrated 8-Bit Analog-to-Digital Converter (ADC) to Report Channel Voltage and Current
- Built-In Self-Testing (BIST)
- ASIL-B Compliant
- ISO 26262 Functional Safety Certified