ISL91106IIQZ-TR5654

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91106IIQZ-TR5654 is a high-efficiency synchronous buck-boost switching regulator manufactured by Renesas Electronics Corporation. It operates within an input voltage range of 1.8V to 5.5V and provides an adjustable output voltage with a maximum switch current capability of 4.2A. The device utilizes a fixed internal switching frequency of 2.5MHz and supports operation across an extended temperature range from -40°C to +85°C. It is housed in a compact 15-ball WLCSP package, designed for surface-mount installation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Employs a proprietary four-switch buck-boost architecture to enable smooth transitions between step-down and step-up modes without discontinuity.
• Delivers industry-leading efficiency up to 96% to extend battery life in portable applications.
• Integrates synchronous rectification to minimize conduction losses and improve overall power conversion performance.

Voltage Regulators - DC DC Switching Regulators Applications

• System power supply for handheld devices
• Peripheral component power management
• RF power amplifier biasing for Wi-Fi modules
• RF power amplifier biasing for 3G/4G cellular modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix IIQZ against official Renesas documentation to confirm pinout and electrical characteristics match your design requirements. Confirm availability status as distribution channels may list obsolete or end-of-life inventory. Ensure the WLCSP-15 package footprint aligns with your PCB layout constraints before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring a single-stage solution for varying input voltages relative to the load requirement. The 4.2A switch current rating supports moderate-to-high power loads in compact form factors. Consider the 2.5MHz frequency for balancing component size against electromagnetic interference (EMI) filtering needs in dense layouts.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL911xx series of high-efficiency buck-boost regulators introduced by Intersil, now part of Renesas Electronics. The series was specifically engineered to address power management challenges in mobile and handheld electronics where battery voltage fluctuates significantly during discharge cycles.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing designs through detailed datasheet comparison if considering alternative components from other manufacturers.