ISL91106IIQZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91106IIQZ-T is a high-efficiency buck-boost switching regulator IC manufactured by Renesas Electronics Corporation. It operates with an input voltage range that accommodates both above and below the regulated output, supporting single-cell lithium-ion battery applications. The device delivers up to 2A of output current and features a fixed 2.5 MHz switching frequency. It utilizes a 15-WLCSP (1.51x2.15 mm) package for compact surface-mount installation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fully synchronous four-switch buck-boost topology for high efficiency across input/output conditions
• Integrated power switches and control logic for minimal external component count
• Fixed 2.5 MHz switching frequency enabling small passive solution size
• Supports input voltages both above and below the regulated output voltage

Voltage Regulators - DC DC Switching Regulators Applications

• Single-cell lithium-ion battery powered portable devices
• USB-powered applications requiring flexible voltage regulation
• Compact consumer electronics with space-constrained PCB layouts
• Battery-operated systems needing efficient step-up/step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify authenticity through authorized Renesas distributors or certified partners. Confirm the specific suffix IIQZ-T matches required temperature and packaging specifications. Request original manufacturer documentation to validate part integrity. Check for obsolescence status as discontinuance notifications may affect long-term supply. Ensure compliance with RoHS directives if applicable to your region.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltage varies around the output level, such as in single-cell Li-ion systems. The 2A current rating suits moderate load requirements. The WLCSP package minimizes board area compared to larger packages. Verify thermal performance under maximum load conditions due to the small footprint. Consider the fixed 2.5 MHz frequency for EMI management and filter design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL91106 family of highly integrated buck-boost regulators from Renesas. It shares functional similarities with variants like ISL91106AIIAZ-T but differs in package and specific electrical characteristics. The family targets portable electronics requiring efficient power management from single-cell batteries.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other ISL91106 variants with compatible pinouts and electrical specs. Verify package compatibility (WLCSP-15) and current ratings before substitution. Cross-reference with Renesas official replacement lists for confirmed equivalents.