Nexperia Electronic Fuse NPS3102

NPS3102A and NPS3102B are low-ohmic (17 mΩ), high current (13.5 A), resettable electronic fuses that are targeted for 12 V applications. They are designed to protect downstream loads from exposure to excessive voltage and protect the power supply from load faults and large inrush currents.

Output slew rate is controlled by a capacitor at dVdt pin. Current limit can be adjusted in the 2 A to 13.5 A range using a resistor at ILIM pin. The voltage at ILIM pin can also be used as a measure of the load current in real-time. The devices include a built-in over voltage clamp that will limit the output voltage during input over voltage conditions.

The devices also include a multi-function EN/FLT pin. When the pin is left floating and the voltage at IN is greater than the under voltage lock-out, the devices turn on. During operation, the voltage at the pin can be used as a fault indicator to determine if the devices are operating normally. Pulling the EN/FLT pin low will turn off the devices.

During thermal shutdown, both devices disable the integrated pass-FET if the die temperature crosses the over temperature threshold. The NPS3102A latches off under a thermal shutdown event and requires user reset by toggling the EN/FLT pin or cycling the voltage at the IN pin. The NPS3102B integrates auto-retry, which safely attempts to re-enable the pass-FET without the need for user intervention.

Key features

• Up to 18 V operating range, 21 V absolute maximum
• Integrated 17 mΩ pass MOSFET
• 2 A to 13.5 A adjustable output current clamp
• 2 µs short circuit protection response time
• Programmable output rise time control
• Built-In thermal shutdown with fault alert pin
• Fault response options: latch-off (NPS3102A), auto-retry (NPS3102B)
• Leadless plastic package; 10 terminals, body 3.0 x 3.0 x 0.75 mm (DFN3030-10/SOT8037-1)
• ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V; CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
• Specified from T_j = -40 °C to +125 °C

Applications

• Server
• Solid State Drive (SSD) and Hard Disk Drive (HDD)
• Mobile infrastructure
• Fan control
• Hot-Swap/Plug