ISL6549IBZ

Overview

The ISL6549IBZ is a dual-output switching controller manufactured by Intersil, designed for synchronous step-down (buck) and linear regulator applications. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a switching frequency between 150 kHz and 1 MHz. The device features two independent outputs with adjustable voltage settings from 800 mV to 13.2 V. It is housed in a 14-lead SOIC Narrow package and functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Dual output topology supporting synchronous buck and linear regulation
• Integrated fail-safe design ensuring logic high receiver output if inputs are floating
• Short-circuit protection on driver outputs even when voltages exceed power supply levels

Applications

• Synchronous DC-DC converter designs
• Linear regulator integration
• Balanced communication interface circuits

Procurement Notes

Verify the specific suffix 'IBZ' against official Renesas or Intersil documentation to confirm pinout and thermal specifications. Confirm current lifecycle status as discontinued or active through authorized distributors. Ensure moisture sensitivity level requirements are met during storage and handling procedures.

Selection Notes

Select this component for applications requiring integrated buck and linear regulation capabilities. Verify that the required switching frequency falls within the 150 kHz to 1 MHz range. Ensure the operating environment stays within the specified 0°C to +70°C temperature limits for reliable performance.

Part Context

This part belongs to the ISL6549 series of power management ICs. It is related to other interface controllers like the ISL8490 but serves distinct power conversion roles. The manufacturer is Intersil, now part of Renesas Electronics.

Replacement Considerations

Check for direct substitutes within the ISL6549 family. Consult official discontinuation notices for recommended alternative part numbers.