ISL6545AIBZ

DC DC Switching Controllers Overview

The ISL6545AIBZ is a synchronous buck PWM controller manufactured by Renesas Electronics Corporation. It operates with a fixed switching frequency of 300 kHz and supports a maximum duty cycle of 100%. The device accepts a supply voltage (Vcc/Vdd) ranging from 4.5 V to 14.4 V. It provides a single positive output configuration and includes integrated current limit and enable control features. The component is housed in an 8-SOIC package with a width of 3.90 mm and is rated for an operating temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Integrated synchronous rectification driver for high-efficiency step-down conversion
• Fixed 300 kHz switching frequency operation
• Supports 100% maximum duty cycle for low dropout applications
• Includes built-in current limiting and enable functionality

DC DC Switching Controllers Applications

• Industrial control systems
• Point-of-load regulation
• General-purpose DC-DC conversion

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'IBZ' against official Renesas documentation to confirm the exact temperature grade and package variant, as suffixes define critical manufacturing attributes. Confirm availability status directly with authorized distributors, as lifecycle changes may affect procurement options. Ensure the ordering part number matches the required operational specifications before finalizing purchase orders.

DC DC Switching Controllers Selection Notes

Select this component when a fixed 300 kHz synchronous buck solution is required within the 4.5 V to 14.4 V input range. The 8-SOIC package suits surface-mount designs requiring moderate pin counts. Verify that the thermal requirements of the application align with the -40°C to +85°C operating range specified for this industrial-grade variant.

DC DC Switching Controllers Part Context

The ISL6545AIBZ belongs to the ISL6545 family of synchronous buck controllers originally developed by Intersil and acquired by Renesas. This series is designed for efficient power management in compact form factors. The 'A' typically denotes the industrial temperature grade, while 'IBZ' specifies the tape and reel or tube packaging and lead-free finish details according to manufacturer conventions.

DC DC Switching Controllers Replacement Considerations

The ISL6545ACBZ is a related variant within the same family but operates at a different switching frequency (600 kHz) and has a limited commercial temperature range (0°C to 70°C). Direct substitution requires verifying if the frequency change and temperature limits are acceptable for the specific design.