Overview
The onsemi NIS5420MT1TXG is a cost-effective, resettable electronic fuse (eFuse) designed to enhance the reliability of various electronic circuits. It is particularly suited for protecting hard drives, motherboard power management, and fan drives from catastrophic and shutdown failures. The device features an integrated power FET, thermal protection, and overvoltage clamp circuits, ensuring continuous operation of the load circuit during transients.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 8 | - | 18 | V |
| Continuous Current (TA = 25°C) | - | - | 4.6 | A |
| Continuous Current (TA = 80°C) | - | - | 3.5 | A |
| Thermal Shutdown Temperature | 150 | 175 | 200 | °C |
| Thermal Hysteresis (Auto-retry part) | - | - | 45 | °C |
| Output Clamping Voltage | 13.6 | - | 16 | V |
| Undervoltage Lockout (VUVLO1) | 7.8 | 8.5 | 9.2 | V |
| ESD Ratings (Human Body Model) | - | - | 2000 | V |
| Package Type | - | - | WDFN-10 (3x3) | - |
Key Features
- Integrated Power Device with thermal protection
- No external current shunt required
- Internal charge pump and undervoltage lockout circuit
- Internal overvoltage clamp circuit to limit output voltage during transients
- dv/dt control circuit to regulate output voltage slew rate
- Load current monitoring capability (for certain models)
- Tri-state enable/fault pin for status indication and shutdown control
- ESD ratings: Human Body Model (HBM) 2000 V
- Pb-free, halogen-free, and RoHS compliant
Applications
- Hard drive protection
- Motherboard power management
- Fan drives
- Other sensitive circuit protection in various electronic systems
Q & A
- What is the input voltage range of the NIS5420MT1TXG?
The input voltage range is from 8 V to 18 V.
- What is the maximum continuous current at 25°C?
The maximum continuous current at 25°C is 4.6 A.
- What is the thermal shutdown temperature?
The thermal shutdown temperature is between 150°C and 200°C, with a typical value of 175°C.
- Does the device have overvoltage protection?
- How does the enable/fault pin function?
The enable/fault pin is a tri-state, bidirectional interface that can be used to shutdown the eFuse and as a status indicator for thermal faults.
- Is the device RoHS compliant?
- What is the package type of the NIS5420MT1TXG?
The package type is WDFN-10 (3x3).
- Can the device monitor load current?
- What is the ESD rating of the device?
The ESD rating is 2000 V according to the Human Body Model (HBM).
- How does the dv/dt circuit function?
The dv/dt circuit controls the slew rate of the output voltage at turn-on, allowing the output voltage to ramp up over a specified period.
