LM2005DR

Overview

The LM2005DR is a compact high-voltage half-bridge gate driver from Texas Instruments, designed to drive high-side and low-side N-channel MOSFETs in synchronous buck or half-bridge configurations. It features an integrated bootstrap diode, eliminating the need for external components. The device supports a GVDD supply range of 9 V to 18 V and handles absolute maximum voltages up to 107 V on the BST pin. It delivers peak source and sink currents of 0.5 A and 0.8 A respectively, with a typical propagation delay of 115 ns. Operating temperatures range from -40°C to +125°C.

Feature Summary

• Integrated bootstrap diode reduces component count and PCB area
• Robust negative transient voltage handling on SH pin improves noise immunity
• Undervoltage lockout (UVLO) on both power rails ensures safe operation during power transitions

Applications

• Synchronous buck converter applications
• Half-bridge motor drive circuits
• High-side and low-side N-channel MOSFET switching control

Procurement Notes

Verify the suffix DR indicates SOIC-8 tape-and-reel packaging. Confirm the specific revision matches design requirements. Check RoHS compliance status as per manufacturer documentation. Ensure ordering quantities align with standard reel sizes if applicable. Validate that the supplier provides genuine Texas Instruments products.

Selection Notes

Select this driver when driving N-channel MOSFETs in half-bridge topologies requiring high-voltage isolation. Consider the integrated bootstrap diode for simplified bill of materials. Evaluate the 0.5A/0.8A current capability against target MOSFET gate charge requirements. Verify compatibility with system logic levels and operating temperature ranges.

Part Context

The LM2005 belongs to Texas Instruments' family of half-bridge gate drivers. It shares functional similarities with the LM2105 but offers distinct voltage handling characteristics. The DR suffix denotes the SOIC-8 surface-mount package variant. This component serves as a critical interface between low-voltage control logic and high-power switching devices.

Replacement Considerations

LM2105DR: Similar half-bridge driver with comparable current capabilities but different voltage specifications.