TLP5774H(LF4,E

Overview

The TLP5774H(LF4,E is a single-channel optically isolated gate driver manufactured by Toshiba Semiconductor and Storage. It integrates a GaAlAs infrared LED with an integrated high-speed photodetector IC in a 6-pin SO6L package. The device provides a peak output current of 4A for driving power semiconductors. Key electrical parameters include a forward voltage of 1.65V, a maximum forward current of 8mA, and an isolation voltage of 5000Vrms. It operates within a temperature range of -40°C to +125°C. Typical switching characteristics feature a rise time of 56ns and a fall time of 25ns, with a maximum propagation delay of 150ns.

Feature Summary

• Integrates a GaAlAs infrared LED with a high-speed photodetector IC for optical signal transmission
• Provides high peak output current capability suitable for direct gate drive applications
• Features wide lead spacing design to enhance creepage distance and safety compliance
• Supports operation at elevated temperatures up to 125°C for robust industrial environments

Applications

• Gate drive coupling for IGBT modules
• Gate drive coupling for MOSFETs
• Industrial motor control systems
• Power conversion equipment

Procurement Notes

Verify the specific suffix LF4 corresponds to the required wider lead configuration and tube packaging when ordering. Confirm that the VDE certification requirement is met if applicable, as this variant includes specific safety approvals. Ensure the input current does not exceed the 8mA maximum rating during circuit design. Cross-reference the manufacturer part number with distributor codes to avoid substitution errors regarding lead pitch variations.

Selection Notes

Select this component when a single-channel gate driver with high surge current capability is required. The 6-SO package offers a compact footprint suitable for dense PCB layouts. Consider the 5000Vrms isolation rating for primary-to-secondary separation needs. The wide lead pitch distinguishes it from standard SO-6 packages, aiding in high-voltage isolation design. Verify thermal management requirements given the 125°C maximum operating temperature limit.

Part Context

This device belongs to the TLP577xH series of optically isolated gate drivers from Toshiba. The series combines infrared LEDs with integrated photodetectors to provide galvanic isolation between control circuits and power switches. The H-series designation typically indicates high-temperature operation capabilities. This family is designed to replace traditional transformer-based or discrete optocoupler solutions in modern power electronics.

Replacement Considerations

TLP5774H(D4LF4,E is a verified substitute offering identical electrical specifications and pinout but with additional VDE certification. Other variants in the TLP5774H family may differ in packaging type (tube vs. reel) or specific safety approvals. Verify lead pitch compatibility before replacing standard SO-6 components.