ISL91127IINZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91127IINZ-T is a high-efficiency synchronous buck-boost DC-DC converter 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. The device supports up to 2.1 A output current and utilizes internal 4.5 A switches for robust performance. It functions at a switching frequency of 2.5 MHz and is housed in a 20-pin WLCSP package. The component is rated for operation between -40°C and +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck-boost topology enables stable regulation across wide input voltage variations, including battery discharge and charge scenarios.
• Integrated high-current internal switches support significant load demands while maintaining high conversion efficiency.
• Compact wafer-level chip scale packaging facilitates space-constrained printed circuit board layouts.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring power management from single-cell lithium-ion batteries
• Industrial equipment utilizing varying input voltage sources
• Automotive infotainment and sensor modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout compatibility and electrical specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to assembly. Ensure the supplier provides valid traceability documentation matching the manufacturer's part number format.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from a 1.8 V to 5.5 V input source. Consider the 2.5 MHz switching frequency for balancing component size and electromagnetic interference. Evaluate the WLCSP package constraints for thermal dissipation and mechanical stability in the target application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL91127 series of high-efficiency buck-boost regulators. The series includes variants with different packages such as QFN and WLCSP, and options for adjustable or fixed outputs. The IINZ designation specifically indicates the WLCSP package configuration within the product family.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum switch current rating for the ISL91127IINZ-T?

The device features internal switches rated for 4.5 A.

Does the ISL91127IINZ-T support adjustable output voltage?

No, the IINZ variant provides a fixed 3.3 V output voltage.