MPQ5870-AEC1

MPQ5870-AEC1

60V, 0.5A, Single-Channel, Smart High-Side Load Switch with High-Accuracy Current Sense, AEC-Q100 Qualified

概要

The MPQ5870-AEC1 is designed as a smart high-side power switch for a nominal 0.5A load. The device supports a wide 3.5V to 60V input voltage (V_IN) range. The MPQ5870-AEC1 provides a highly efficient and compact solution with a small on resistance (R_DS(ON)).

As a functional safety-capable device, the MPQ5870-AEC1 provides related safety documentation to aid in functional safety design.

The MPQ5870-AEC1 supports both internal and configurable, high-accuracy external current limits. The device helps clamp inrush current during short circuits, which improves system reliability. An adjustable start-up slew rate also helps reduce inrush current during start-up.

The CS/FT pin provides high-accuracy current-sense (CS), which achieves real-time and accurate diagnostics without further calibration. The voltage on the CS/FT pin represents 1 / K_CS of the load current, where K_CS is a constant value across the temperature and supply voltage. In addition, the CS/FT pin can report a fault by pulling up its voltage.

Full diagnostics during on and off states are developed for the MPQ5870-AEC1. By pulling the DIAG_EN pin up or down, the diagnostic functions (current sensing and off-state open load/short-to-battery detection) can be enabled or disabled. If off-state diagnostics are not required in the system, connecting to the EN pin can disable the function to further reduce quiescent current (I_Q).

The MPQ5870-AEC1 is available in QFN-8 (2mmx2.5mm) and SOT583 packages, and is available in AEC-Q100 Grade 1 and AEC-Q100-012 Test Grade A.

機能と利点

Built to Handle Tough Automotive Transients:
- Load Dump Up to 60V
- Cold Crank Down to 3.5V
- Available in AEC-Q100 Grade 1
Cooler Thermals:
- Integrated MOSFET
Extends Vehicle Battery Life:
- Extremely Low Standby Current: 0.5μA
- Low Quiescent Current (I_Q) Mode: 500μA
Reduces Board Size:
- Available in a QFN-8 (2.0mmx2.5mm) Package and a SOT583 Package
Flexibility:
- Configurable External Current Limit
- Adjustable Start-up Slew Rate
- Compatible with 1.8V and 3.3V Logic
Full Diagnostics and Protections:
- High-Accuracy Current Sense: ±1% at 0.5A and ±20% at 10mA
- Loss of GND Protection
- Drain-Source Voltage (V_DS) Clamp for Inductive Load Switching
- On-State and Off-State Open Load And Battery Short Detection
- Thermal Shutdown
- Available in AEC-Q100-012 Test Grade A
Functional Safety System Design Capability:
- Documents Available for MPSafe^TM QM System Design