NIS5135MN2-FN-7

Current Regulation/Management Overview

The NIS5135MN2-FN-7 is a self-resetting electronic fuse (eFuse) manufactured by Diodes Incorporated, designed for system protection in consumer and industrial applications. It integrates an NMOS power buffer with overvoltage clamping, undervoltage lockout, current limiting, dv/dt control, and thermal shutdown features. The device operates within a supply voltage range of 3.1 V to 18 V and supports a continuous current of 3.6 A. Key electrical parameters include a typical on-resistance of 30 mΩ and a maximum input voltage of 18 V. The component utilizes a U-DFN3030-10 package and offers automatic retry thermal protection.

Current Regulation/Management Feature Summary

• Integrates low RDS(ON) NMOS power buffer without requiring external current sensing resistors
• Features internal overvoltage clamping circuit to limit output voltage during transients
• Provides automatic retry thermal shutdown functionality to prevent permanent damage
• Includes built-in dv/dt control and undervoltage lockout circuits

Current Regulation/Management Applications

• Hard disk drive (HDD) protection
• Solid-state drive (SSD) load management
• Set-top box power supply protection
• Motherboard power distribution networks
• Printer load power management

Current Regulation/Management Procurement Notes

Verify the specific suffix FN-7 against the manufacturer datasheet to confirm the automatic retry variant and tape-and-reel packaging configuration. Ensure the procurement source provides valid RoHS compliance documentation and confirms the component is not obsolete or end-of-life. Cross-reference the part number with official distributor catalogs to validate authenticity and traceability before purchase.

Current Regulation/Management Selection Notes

Select this component when designing systems requiring integrated protection against overcurrent, overvoltage, and thermal faults without external sensing components. The automatic retry feature suits applications where temporary fault conditions should not cause permanent system downtime. Verify that the required operating voltage falls within the 3.1 V to 18 V range and that the 3.6 A current rating meets the load requirements.

Current Regulation/Management Part Context

This part belongs to the NIS5135 series of resettable electronic fuses from Diodes Incorporated. The series distinguishes between latch-type (NIS5135MN1) and auto-retry (NIS5135MN2) thermal protection options. The MN2 variant specifically addresses scenarios requiring automatic recovery after thermal events, enhancing system reliability in critical power distribution paths.

Current Regulation/Management Replacement Considerations

Direct substitutes may include other NIS5135 variants with compatible pinouts and electrical characteristics. Verify that any replacement matches the automatic retry behavior and the U-DFN3030-10 package dimensions. Consult the manufacturer's EOL notices for alternative recommendations if this specific part number is discontinued.

Current Regulation/Management FAQ

What is the difference between NIS5135MN1 and NIS5135MN2?

The primary difference is the thermal shutdown behavior. The NIS5135MN1 features a latch-type thermal shutdown that requires manual intervention to reset, while the NIS5135MN2 offers an automatic retry function that restores operation once the temperature decreases.

Does the NIS5135MN2 require an external current sense resistor?

No, the device integrates internal current limiting circuitry and does not require an external current shunt resistor for operation, simplifying the design and reducing component count.