Overview
The NIS5232MN1TXG is a cost-effective, resettable electronic fuse designed by onsemi to enhance the reliability of various electronic circuits, particularly in applications such as hard drives and motherboard power management. This device integrates multiple protection features to safeguard against catastrophic and shutdown failures, ensuring continuous operation of the load circuit even during transient events.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage, Operating | VIN | -0.6 | - | 18 | V |
| Transient Input Voltage (100 ms) | VIN | -0.6 | - | 25 | V |
| Continuous Current (TA = 25°C, 0.5 in^2 copper) | ID | - | 4.2 | - | A |
| Thermal Shutdown Temperature | TSD | 150 | 175 | 200 | °C |
| Undervoltage Lockout (Turn-on Voltage) | VUVLO | 7.7 | 8.5 | 9.3 | V |
| Output Clamping Voltage (Overvoltage Protection) | VClamp | 14 | 15 | 16.2 | V |
| On Resistance (TJ = 140°C) | RDSon | 35 | 44 | 62 | mΩ |
| dv/dt Output Voltage Ramp Time | tslew | 0.5 | 0.9 | 1.8 | ms |
Key Features
- Integrated Power Device with thermal protection
- No external current shunt required
- Internal charge pump for gate voltage and current limit circuit
- Internal undervoltage lockout circuit
- Internal overvoltage clamp circuit
- ESD ratings: Human Body Model (HBM) 1500 V, Machine Model (MM) 200 V
- UL2367 approved and RoHS compliant
- dv/dt circuit for controlled output voltage ramp
- Enable/Fault pin for monitoring and control
Applications
- Hard Drives
- Motherboard Power Management
Q & A
- What is the primary function of the NIS5232MN1TXG? The NIS5232MN1TXG is a resettable electronic fuse designed to protect electronic circuits from catastrophic and shutdown failures.
- What is the input voltage range for the NIS5232MN1TXG? The input voltage range is from 9 V to 18 V.
- What is the maximum continuous current rating for the NIS5232MN1TXG at 25°C? The maximum continuous current rating is 4.2 A.
- How does the overvoltage clamp circuit work? The overvoltage clamp circuit limits the output voltage to 15 V during transient events without shutting down the device.
- What is the thermal shutdown temperature for the NIS5232MN1TXG? The thermal shutdown temperature is between 150°C and 200°C.
- How does the undervoltage lockout circuit function? The undervoltage lockout circuit uses a comparator with hysteresis to monitor the input voltage and switches the output to a high impedance state if the voltage drops below the specified level.
- What is the purpose of the dv/dt circuit? The dv/dt circuit controls the slew rate of the output voltage at turn-on, ensuring a linear ramp over a specified period.
- Is the NIS5232MN1TXG RoHS compliant? Yes, the NIS5232MN1TXG is RoHS compliant.
- What are the typical applications for the NIS5232MN1TXG? Typical applications include hard drives and motherboard power management.
- How does the enable/fault pin function? The enable/fault pin is a tri-state, bidirectional interface that can enable or disable the output and signal thermal faults.
