MP5098 Dual-Channel E-Fuse QFN-10

MP5098 Dual-Channel E-Fuse QFN-10

The MP5098 is a 12V/5V, low quiescent current (IQ), low on resistance (RDS(ON)), dual-channel e- fuse protection device with current monitoring.

Key Specifications

Features

• 12V/5V Integrated Dual E-Fuse
• Dual-Channel Current Limiting
• 24V/100ms Maximum Surge Input Voltage (VIN) Tolerance for 12V Bus and 5V Bus
• 40mΩ Low On Resistance (RDS(ON))
• Low Quiescent Current (IQ): o 210µA IQ for 12V Bus o 190µA IQ for 15V Bus
• Configurable Soft-Start Time (tSS)
• Fixed Trip/Hold Current Limit (ILIMIIT): o Fixed 4A Trip ILIMIIT for 12V Bus o Fixed 2.5A Hold ILIMIIT for 12V Bus o Fixed 3A Trip ILIMIIT for 5V Bus o Fixed 1.3A Hold ILIMIIT for 5V Bus
• 15V Over-Voltage Protection (OVP) Threshold for 12V VIN Channel
• 5.7V OVP Threshold for 5V VIN Channel
• Over-Current Protection (OCP) with Hiccup Mode

Typical Application Circuit

Applications

• Hard-Disk Drives (HDDs)
• Solid-State Drives (SSDs)

Design Notes

• The current-limit threshold must stay inside the SOA of the pass device at the applied voltage, including startup inrush.
• Hot-swap inrush control is set by the slew rate on the gate or the dV/dt capacitor — too fast trips the upstream supply.
• Reverse-current blocking behaviour differs between ideal-diode and load-switch topologies; pick the one that matches the fault you are protecting against.
• Route the fault flag to a pin the firmware actually polls; a latch-off protection with no report looks like a dead board in the field.

Common Questions