IR2109STR

Gate Driver Overview

The IR2109STR is a half-bridge gate driver IC designed for driving power MOSFETs and IGBTs. It features a high-voltage floating channel capable of operating up to 600 V. The device provides 0.2 A source current and 0.35 A sink current. It operates within a supply voltage range of 10 V to 20 V. Key timing parameters include a rise time of 220 ns, fall time of 80 ns, turn-on propagation delay of 750 ns, and turn-off propagation delay of 200 ns. The component utilizes junction isolation and is housed in an 8-pin SOIC package.

Gate Driver Feature Summary

• Supports high-side and low-side switching configurations via a half-bridge topology
• Includes under-voltage lockout (UVLO) mechanisms for both the main supply and bootstrap circuits
• Features functional level-shift isolation between logic inputs and high-voltage outputs

Gate Driver Applications

• Industrial motor control systems
• Power supply inverters
• High-voltage lamp ballasts

Gate Driver Procurement Notes

Verify RoHS compliance status carefully as the STR suffix may indicate lead-containing variants in certain distributions. Confirm end-of-life or obsolescence status with authorized distributors prior to procurement, as this specific part number has been reported as obsolete in some channels. Ensure substitute availability if long-term production is required.

Gate Driver Selection Notes

Select this component for applications requiring isolated half-bridge drive with moderate output current capabilities. Consider the propagation delays when designing for high-frequency switching operations. Verify that the input logic levels are compatible with the control circuitry. Evaluate thermal performance within the SOIC-8 package constraints for the intended duty cycle.

Gate Driver Part Context

This device belongs to the IR2109 family of gate drivers from Infineon Technologies. It serves as a legacy solution for medium-power switching applications where cost-effective isolation is required. Newer designs may utilize updated packages or enhanced speed variants within the same product line.

Gate Driver Replacement Considerations

IR2109SPBF and IR2109STRPBF are confirmed direct substitutes. These alternatives offer identical electrical specifications but differ in packaging suffixes or compliance certifications. Verify pin compatibility before substitution.