ISL9305IRTHWCLBZ-T

Overview

The ISL9305IRTHWCLBZ-T is a PMIC from Renesas Electronics Corporation, classified as a regulator - linear switching IC. It features four outputs with a topology of two buck converters and two low-dropout (LDO) regulators. The device operates at a switching frequency of 3MHz and supports an input voltage range of 1.5V to 5.5V. It is housed in a 16-TQFN (4x4) package with exposed pad for surface mount installation. The component is rated for operation within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates dual buck converters and dual LDOs for versatile power rail generation
• Supports high-frequency switching operation at 3MHz for compact passive design
• Designed for efficient power management in portable electronic applications

Applications

• Portable consumer electronics requiring multiple voltage rails
• Battery-powered devices needing efficient step-down regulation
• Embedded systems utilizing mixed linear and switching topologies

Procurement Notes

Verify the specific suffix 'LBZ' against official Renesas documentation to confirm pinout and electrical characteristics, as suffixes often denote package or tape-and-reel variations. Confirm current lifecycle status, as similar ISL9305 variants have been marked obsolete. Ensure compatibility with your PCB footprint for the 16-TQFN package before procurement.

Selection Notes

Select this component when a single IC solution is required to provide both switched and linear regulated voltages. The 3MHz switching frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the combined output current requirements of the buck and LDO sections do not exceed the thermal limits of the 16-TQFN package under your specific ambient conditions.

Part Context

This part belongs to the ISL9305 family of quad-output power management ICs. These devices are designed to simplify power architecture by combining different regulation types. The 'IRTBFNCZ-T' variant listed in general databases shares the core ISL9305 functionality but may differ in packaging or reel specifications compared to the 'IRTHWCLBZ-T' designation.

Replacement Considerations

Check for direct cross-reference availability through Renesas. Generic replacements may require redesigning the feedback network due to differences in internal reference voltages or control loop compensation. Verify that substitute components support the same 16-TQFN footprint and thermal dissipation capabilities.