ISL6540AIRZ-TKR5632

DC DC Switching Controllers Overview

The ISL6540AIRZ-TKR5632 is a single-phase synchronous buck PWM controller manufactured by Renesas Electronics Corporation. It operates with an input voltage range of 2.97V to 22V and supports switching frequencies from 250kHz to 2MHz. The device provides one positive output configured for step-down topology, capable of delivering up to 4A output current with a minimum output voltage of 600mV. It features a 28-QFN (5x5mm) package with an exposed pad, operating within a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Integrated high-speed MOSFET driver for efficient synchronous rectification
• Pre-biased load capability to support applications requiring immediate output upon startup
• Includes comprehensive protection features such as cycle-by-cycle current limiting and soft-start functionality

DC DC Switching Controllers Applications

• Industrial control systems
• Point-of-load regulation modules
• Telecommunications infrastructure power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix TKR5632 against official Renesas documentation to confirm packaging and tape-and-reel specifications. Confirm End-of-Life status and lead times with authorized distributors, as availability may be limited due to obsolescence notices. Ensure compatibility with existing PCB footprints for the 28-QFN package before procurement.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring a compact, single-phase synchronous buck solution with pre-bias tolerance. Consider the 250kHz to 2MHz frequency range for balancing efficiency and component size. Verify that the 2.97V to 22V input range matches the system supply rails and that the 4A current rating meets the load requirements.

DC DC Switching Controllers Part Context

This part belongs to the ISL6540A series of DC-DC controllers. It is designed for high-efficiency power conversion in space-constrained environments. The manufacturer has indicated scheduled obsolescence for this product line, necessitating careful lifecycle management for long-term production planning.

DC DC Switching Controllers Replacement Considerations

Check for direct pin-compatible alternatives from Renesas or other manufacturers offering similar synchronous buck controllers. Evaluate successor components in the ISL6540 family or newer generations that maintain the 28-QFN footprint and pre-bias capabilities.