Monolithic Power Systems (MPS) MPQ5873-AEC1 Smart High-Side Load Switch
Monolithic Power Systems (MPS) MPQ5873-AEC1 Smart High-Side Load Switch is designed for nominal 3A loads. The device supports a wide 3.5V to 36V input voltage (VIN) range. With a small on-resistance [RDS(ON)], the MPQ5873-AEC1 provides a highly efficient, compact solution. The device supports both an internal and configurable, high-accuracy external current limit. This feature helps clamp the inrush current under short-circuit conditions, improving overall system reliability. An adjustable start-up slew rate also helps to reduce inrush current during start-up.
The FT/CS pin provides high-accuracy current sensing, which achieves accurate real-time diagnostics without additional calibration. The FT/CS pin (VCS) voltage represents 1/KCS of the load current (ILOAD), where KCS is a constant value across the temperature and supply voltage ranges. The FT/CS pin can report faults by pulling up its voltage. The MPQ5873-AEC1 features full diagnostics during both on and off states. By pulling the DIAG_EN pin up or down, off-state open-load and short-to-battery detection can be enabled or disabled. If off-state diagnostics are not required in the system, the function can be disabled to reduce the standby current by connecting the DIAG_EN and GND pins.
The Monolithic Power Systems (MPS) MPQ5873-AEC1 is available in a QFN-8 (2mm x 2.5mm) package. It is available in AEC-Q100 Grade 1 and complies with AEC-Q100-012 Test Grade A.
Features
- Built to handle tough automotive transients and AEC-Q100 requirements
- Load dump up to 42V
- Cold crank down to 3.5V
- Available in AEC-Q100 Grade 1
- Cooler thermals with integrated 60mΩ MOSFET
- Extends vehicle battery life with extremely low standby current of 0.5μA
- Reduces board size
- Available in a QFN-8 (2mm x 2.5mm) package
- Available in a wettable flank package
- Vast flexibility
- Configurable external current limit
- Adjustable start-up slew rate
- 3.3V and 5V logic compatible
- Full diagnostics and robust protections
- High-accuracy current sense of ±4% at 1A and ±6% at 300mA
- On-state and off-state open-load and short-to-battery detection
- Thermal shutdown
- Compliant with AEC-Q100-012 test Grade A
- Functional Safety System design capability with documents available for MPSafe™ QM system design
Applications
- Smart switches for automotive infotainment systems
- Power switches for Advanced Driver Assistance Systems (ADAS)
- High-side power switches for sub-modules
- General resistive, inductive, and capacitive loads
Typical Application
Development Tool
Monolithic Power Systems (MPS) EVQ5873-RP-00A Load Switch Evaluation Board
Designed to demonstrate the MPQ5873-AEC1, a smart high-side power switch for nominal 3A loads.