ISL91127IINZ-T7A

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91127IINZ-T7A is a high-efficiency synchronous buck-boost switching regulator manufactured by Renesas Electronics. It operates with an input voltage range of 1.8 V to 5.5 V and provides a fixed 3.3 V output at up to 2.1 A. The device integrates 4.5 A switches and functions at a switch frequency of 2.5 MHz. It utilizes a WLCSP-20 package for surface mount installation. The component supports operation within a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck-boost topology supporting both step-down and step-up conversion modes
• Integrated high-current switches for efficient power delivery
• Fixed output voltage configuration for simplified design
• Compact wafer-level chip scale packaging

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered devices requiring stable voltage regulation
• Systems with varying input supply levels needing consistent output
• Space-constrained embedded electronics utilizing small form factor packages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix T7A corresponds to the required tape and reel quantity during ordering. Confirm that the WLCSP-20 package dimensions align with your PCB footprint requirements. Ensure compatibility with the specified 3.3 V fixed output, as adjustable variants exist within the same family. Check moisture sensitivity level handling procedures prior to assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 3.3 V output is required from a single-cell lithium-ion or similar variable input source. The 2.1 A output current capability suits moderate load applications. Consider the WLCSP-20 package if board space is limited compared to QFN alternatives. Verify thermal performance under maximum load conditions given the compact package size.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the ISL91127 series of high-efficiency buck-boost regulators. It shares architectural similarities with other members like the ISL91127IRNZ-T7A but differs in package type. The series targets portable electronics where efficiency and size are critical. Renesas designs these ICs to optimize performance across wide input voltage ranges.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the output voltage adjustable?

No, the ISL91127IINZ-T7A features a fixed 3.3 V output. Adjustable versions are available in other package variants within the series.

What is the maximum switch frequency?

The device operates at a switch frequency of 2.5 MHz, allowing for smaller external passive components.