ISL6545IBZ

DC DC Switching Controllers Overview

The ISL6545IBZ is a single-phase synchronous buck PWM controller manufactured by Renesas Electronics. It operates with a fixed switching frequency of 300kHz and supports a supply voltage range of 4.5V to 14.4V. The device delivers a maximum duty cycle of 100% and regulates output voltages between 600mV and 5V, supporting load currents up to 25A. It features integrated current limit and enable control functions. The component is housed in an 8-SOIC package and is rated for operation within a temperature range of -40°C to 85°C.

DC DC Switching Controllers Feature Summary

• Integrated synchronous rectifier driver for high-efficiency step-down conversion
• Fixed 300kHz switching frequency simplifies external component selection
• Built-in current limiting and enable functionality for system protection

DC DC Switching Controllers Applications

• Industrial power supplies
• Point-of-load (POL) regulation modules
• Telecommunications equipment power distribution

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'IBZ' against the official datasheet to confirm the industrial temperature grade (-40°C to 85°C) and SOIC-8 packaging. Confirm RoHS compliance status as per the latest manufacturer documentation. Check for End-of-Life (EOL) notices or Product Change Notifications (PCN) regarding obsolescence before finalizing procurement plans.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring a single-phase synchronous buck topology with a fixed 300kHz frequency. Ensure the input voltage stays within the 4.5V to 14.4V range. Verify that the required operating temperature aligns with the industrial grade specification. Consider the 8-SOIC package constraints for PCB layout and thermal management requirements.

DC DC Switching Controllers Part Context

The ISL6545IBZ belongs to the ISL6545 family of synchronous buck controllers from Renesas. This series is designed for efficient DC-DC conversion in compact form factors. The IBZ variant specifically denotes the industrial temperature rating and standard tube packaging, distinguishing it from commercial grades or tape-and-reel variants like the IBZ-T.

DC DC Switching Controllers Replacement Considerations

Check for direct pin-compatible replacements within the ISL6545 family, such as the ISL6545ACBZ, noting that the ACBZ variant may have different temperature ratings or be obsolete. Verify electrical parameter compatibility before substitution.