LF21844NTR

Overview

The LF21844NTR is a half-bridge driver IC designed to drive two N-channel MOSFETs or IGBTs in a half-bridge configuration. It features floating high-side driver capability for bootstrap operation up to 600V. The device operates with a supply voltage range of 10V to 20V and delivers typical source peak drive current of 1.9A and sink peak drive current of 2.3A. It is housed in a 14-pin SOIC package.

Feature Summary

• Drives two N-channel MOSFETs or IGBTs in a half-bridge configuration
• Floating high-side driver supports bootstrap operation up to 600V
• Provides independent high-side and low-side output control

Applications

• Industrial motor drives
• Power supply circuits
• Inverter systems

Procurement Notes

Verify the specific suffix 'NTR' indicates tape and reel packaging when sourcing. Confirm the manufacturer is Littelfuse Inc. Ensure the component matches the 14-pin SOIC physical dimensions. Check RoHS compliance status if required by your manufacturing standards. Validate the part number against official Littelfuse documentation to avoid counterfeit components.

Selection Notes

Select this component for applications requiring isolated gate driving in half-bridge topologies. The 600V floating capability suits medium-voltage power switching. Ensure the load current requirements align with the 1.9A source and 2.3A sink drive capabilities. Verify that the operating temperature range meets environmental constraints.

Part Context

This part belongs to the Littelfuse family of half-bridge drivers. It is specifically engineered for controlling power semiconductors like MOSFETs and IGBTs. The design focuses on reliable switching performance in industrial and automotive power electronics environments.

Replacement Considerations

Check for direct pin-to-pin replacements from Littelfuse or other manufacturers offering similar half-bridge drivers with comparable voltage ratings and drive currents. Verify electrical compatibility before substitution.