ISL6744ABZ-T

DC DC Switching Controllers Overview

The ISL6744ABZ-T is an obsolete intermediate bus PWM controller designed for half-bridge and full-bridge topologies. It features a 1A MOSFET gate driver, adjustable oscillator frequency up to 2MHz, and precise dead time control with propagation delays as low as 35ns. The device includes internal over-temperature protection, input undervoltage protection, and adjustable soft-start. It operates within a temperature range of -40°C to +105°C and is housed in an 8-pin SOIC package.

DC DC Switching Controllers Feature Summary

• Precision duty cycle and dead time control for stable switching
• High-speed 1A gate drivers with 35ns propagation delay
• Integrated overcurrent shutdown and restart functionality
• Optimized for high noise environments with low start-up current

DC DC Switching Controllers Applications

• Telecom power supplies
• Datacom isolated power converters
• Intermediate bus converters
• DC/DC transformers

DC DC Switching Controllers Procurement Notes

Verify component obsolescence status prior to design finalization. Confirm package type compatibility and thermal requirements against system specifications. Check for available replacement alternatives from the manufacturer or authorized distributors. Ensure all regulatory compliance documentation is accessible for legacy part integration.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring robust performance in noisy environments. Consider the specific need for adjustable delayed overcurrent shutdown and restart capabilities. Evaluate the trade-off between the 2MHz maximum frequency and external component count. Verify that the 1A drive strength meets the gate charge requirements of the target MOSFETs.

DC DC Switching Controllers Part Context

The ISL6744A series represents an advanced BiCMOS design optimized for unregulated DC/DC converters. It serves as a voltage-mode PWM controller specifically tailored for half-bridge and full-bridge power supplies. The 'A' suffix denotes optimization for higher noise environments compared to the standard ISL6744. This component is part of Renesas Electronics' (formerly Intersil) portfolio of power management integrated circuits.

DC DC Switching Controllers Replacement Considerations

The ISL6744ABZ-T is listed as obsolete. No direct public substitute part numbers are confirmed in the provided data. Designers should consult official manufacturer resources for potential cross-reference recommendations or updated product line replacements.