ISL91110II2AZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91110II2AZ-T is a high-efficiency synchronous buck-boost switching regulator manufactured by Renesas Electronics Corporation. It operates with an input voltage range of 1.8 V to 5.5 V and provides a fixed output voltage of 3.3 V. The device supports up to 2 A of continuous output current and integrates internal power switches. It functions at a switching frequency of 2.5 MHz and maintains operation within a temperature range of -40°C to +85°C. The component utilizes a WLCSP-25 package for surface-mount installation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck-boost topology supporting single-cell lithium-ion battery inputs
• Integrated shutdown mode for extended battery life in portable applications
• Fixed 3.3 V output configuration optimized for low-voltage digital loads

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics powered by single-cell lithium-ion batteries
• Smartphones and mobile communication devices requiring efficient power management
• Wearable technology and compact handheld instruments

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'II2' against official Renesas documentation to confirm pinout and functional compatibility, as suffixes often denote package variations or testing configurations. Ensure the procurement channel sources genuine components from authorized distributors to guarantee authenticity and traceability. Cross-reference the manufacturing date code and lot number with the datasheet specifications to ensure compliance with RoHS standards and operational temperature ratings.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems that require regulation from a single-cell lithium-ion source (3.7V nominal) to a stable 3.3V rail under varying load conditions. The integrated buck-boost architecture eliminates the need for external inductors associated with separate boost or buck stages, simplifying the bill of materials. Consider the 2.5 MHz switching frequency for balancing electromagnetic interference and passive component size requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL91110 series of high-efficiency synchronous buck-boost regulators designed for portable applications. The series typically includes variants with different output voltages and packaging options. The II2 suffix indicates a specific configuration within this family, likely related to the fixed output voltage and package type, distinguishing it from adjustable output versions or alternative package formats.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.