MPQ5864-AEC1

MPQ5864-AEC1

16V, 0.8A, 180mΩ R_DS(ON), Quad-Channel High-Side Switch, AEC-Q100 Qualified

Description

The MPQ5864-AEC1 is a quad-channel, smart high-side power switch for a nominal current up to 0.8A per channel. The device covers a 5V to 16V input voltage (V_INx, where x = A or B) range. With a separate power supply design, the device supports two different input power rails. A back-to-back MOSFET configuration achieves up to 26V for short-to-battery protection.

With a small 180mΩ on resistance (R_DS(ON)), the MPQ5864-AEC1 provides a highly efficient and compact solution for camera load switch applications.

The MPQ5864-AEC1 supports a configurable, high-accuracy current limit via the I²C 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, a fast-off function can quickly turn off the device if the channel current increases sharply.

The MPQ5864-AEC1 communicates to the microcontroller (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, and output voltages can be obtained without additional external circuitry. Full diagnostics and protections are developed for the device, including input over-voltage (OV)/under-voltage (UV), output OV for each channel, open-load and short-to-battery detection, over-current protection (OCP), short-circuit protection (SCP) (fast off) and over-temperature (OT) shutdown. The average/peak current detection improves diagnostic reliability in the driver monitoring system (DMS). The fault status can be reported via the FT pin and I²C interface.

The MPQ5864-AEC1 provides well-developed monitoring and diagnostics with an internal ADC. Related safety documentation is also provided to aid functional safety design.

The MPQ5864-AEC1 is available in a tiny TQFN-17 (3mmx4mm) package, and it is available in AEC-Q100 Grade 1.

Features & Benefits

Designed for Automotive Applications:
- 5V to 16V Input Voltage (V_INx, where x = A or B) Range
- 26V Short-to-Battery Protection with Back-to-Back MOSFET
- Available in AEC-Q100 Grade 1
Cooler Thermals:
- 180mΩ On Resistance (R_DS(ON)) for Channels
Reduced Board Size:
- Available in a TQFN-17 (3mmx4mm) Package
- Available with Wettable Flanks
High-Accuracy Current-Sense Capabilities:
- ±3% at 1A
Extended Vehicle Battery Life:
- 5μA Low Standby Current

Vast Flexibility:

Separate Power Supply Design to Support Two Power Rails
Supports Output with Parallel Channels (A1, A2, B1, and B2)
Configurable Current Limit and Soft-Start Time (t_SS)

Full Diagnostics and Protection with Digital Interface:

Fault Reporting via the FT Pin and I²C Interface
I²C Supports 6 Addresses
V_INx Over-Voltage (OV)/Under-Voltage (UV) Detection
Output Voltage (V_OA1, V_OA2, V_OB1, and V_OB2) OV Detection
Open Load and Short-to-Battery Detection
Peak and Real-Time Current Sensing
Short-Circuit Protection (SCP) and Over-Temperature Protection (OTP) for Each Channel
Compliant with AEC-Q100-012 Test Grade 1