FDMF5821DC

Full Half-Bridge (H Bridge) Drivers Overview

The FDMF5821DC is a Smart Power Stage (SPS) module from onsemi, integrating high-side and low-side gate drivers with power MOSFETs in a single package. It features a 31-PQFN (5x5 mm) surface-mount footprint. The device operates with a supply voltage range of 4.5 V to 5.5 V and supports load voltages up to 16 V. Key electrical parameters include a peak output current of 60 A, rise time of 4 ns, and fall time of 3 ns. Typical on-resistance values are 470 mΩ for the low side and 680 mΩ for the high side. It functions within a junction temperature range of -40°C to +125°C.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Integrates half-bridge driver and UMOS power transistors into a compact Smart Power Stage module.
• Includes integrated temperature monitoring with status flag output for thermal protection.
• Features bootstrap circuit capability and latch function for robust operation.
• Provides UVLO and overtemperature fault protection mechanisms.

Full Half-Bridge (H Bridge) Drivers Applications

• Synchronous buck converters
• Point-of-load (POL) regulation modules
• Server and computing power supplies

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify component authenticity through authorized channels as this part is obsolete. Confirm final purchase details directly with suppliers, noting that availability may be limited to existing stock or last-time buys. Ensure compliance with RoHS3 specifications and check for any specific handling requirements associated with the PQFN package during assembly.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component for designs requiring high current density in a small form factor. The integrated SPS architecture reduces external component count compared to discrete solutions. Consider the 31-pin PQFN package for thermal management needs. Verify that the control interface matches PWM requirements and that the 4.5V to 5.5V supply range aligns with system logic levels.

Full Half-Bridge (H Bridge) Drivers Part Context

This device belongs to the SyncFET family by onsemi, designed for high-efficiency power conversion. It combines gate drive technology with silicon MOSFETs to optimize switching performance. The product line targets applications demanding high power density and simplified board layout. As an obsolete part, it represents previous generation technology in the company's portfolio.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official obsolescence notices or contact the manufacturer for recommended next-generation alternatives suitable for synchronous buck converter applications.