ISL9122AIINZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9122AIINZ-T is a synchronous buck-boost switching regulator IC manufactured by Renesas Electronics Corporation. It operates within an input voltage range of 1.8V to 5.5V and provides an adjustable output voltage from 1.8V to 5.375V. The device delivers a maximum continuous output current of 500mA with a fixed switching frequency of 2.5MHz. It features ultra-low quiescent current specifications, including a typical static current of 1.3µA and a shutdown supply current of 8nA. The component is housed in an 8-WLCSP package (1.8x1mm) and supports operation across a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency across load conditions
• Adjustable output voltage via I²C interface for design flexibility
• Ultra-low power consumption with minimal standby current draw

Voltage Regulators - DC DC Switching Regulators Applications

• IoT sensor nodes requiring extended battery life
• Smart wearable devices with limited space constraints
• Portable consumer electronics powered by single-cell batteries

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm that the 'I' designation corresponds to the industrial temperature grade (-40°C to +85°C). Ensure compatibility with the 8-WLCSP footprint during PCB layout. Cross-reference the datasheet revision date to confirm pinout consistency before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring seamless transition between buck and boost modes without external diodes. Consider the small WLCSP footprint if board real estate is critical. Verify that the required output current does not exceed 500mA. Evaluate the I²C control requirement against system complexity. Compare thermal performance requirements against the package's dissipation capabilities.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL9122 series of ultra-low IQ buck-boost regulators designed for IoT and portable applications. It integrates internal power FETs to minimize solution size. The series emphasizes efficiency at light loads to maximize battery runtime. It serves as a compact power management solution for systems driven by lithium-ion or polymer batteries.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The ISL9122AIINZ-T7A is documented as a parameter-equivalent substitute. Verify package marking and availability status before substitution. Ensure functional equivalence regarding electrical parameters and control interfaces.