MP5042 4.2-28V, 2A E-Fuse TSOT23

MP5042 4.2-28V, 2A E-Fuse TSOT23

The MP5042 is a protection device designed to protect circuitry on the output from transients on the input.

Key Specifications

Features

• Wide 4.2V to 28V Operating Input Voltage (VIN) Range
• Low 175µA Quiescent Current (IQ)
• Integrated 115mΩ MOSFET
• Adjustable 25mA to 2A Current Limit (ILIMIT) or Fixed 260mA ILIMIT when the ILIMIT Pin Is Floating
• Configurable Soft-Start Time (tSS) via the DV/DT Pin
• ±10% ILIMIT Accuracy at 260mA
• ±7% ILIMIT Accuracy at 800mA
• Fast Response for Hard Short Protection
• Over-Current Protection (OCP) with Hiccup Mode and Latch-Off Protection
• Thermal Shutdown and Automatic Retry

Typical Application Circuit

Applications

• Hard Disk Drives (HDDs) and Solid-State Drives (SSDs)
• Hot-Swap Devices
• Wireless Modem Data Cards

Design Notes

• Check the input common-mode range against the actual signal, especially in single-supply rails where ground-referenced signals sit at the edge.
• Capacitive load drives stability; add series isolation when driving cables or ADC inputs directly.
• Offset voltage and its drift, not gain bandwidth, usually set the achievable accuracy in DC instrumentation.
• Decouple at the pin with the smallest package capacitor that meets the transient requirement, returned to a local ground.

Common Questions