ISL91127IRAZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91127IRAZ-T 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 an adjustable output voltage from 1 V to 5.2 V. The device supports up to 2 A output current and integrates 4.25 A internal switches. Key electrical parameters include a 2.5 MHz fixed switching frequency, 30 uA quiescent current, and 5 mV/V load regulation. It functions within an operating temperature range of -40°C to +85°C and is housed in a 20-QFN (4x4 mm) package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous buck-boost topology for flexible power conversion
• High efficiency design utilizing 4.25 A internal power switches
• Low quiescent current consumption for extended battery life
• Fixed 2.5 MHz switching frequency for compact external component sizing

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable electronic devices
• Single-cell lithium-ion battery systems
• Industrial sensor nodes
• IoT communication modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'RAZ' corresponds to the 20-QFN package and tape-and-reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) requirements during storage and handling. Ensure the ordering part number matches the exact pinout and thermal pad specifications required by the target PCB layout.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages vary above or below the desired output level, requiring buck-boost capability. The 2 A output rating suits moderate load applications. Consider the 20-QFN package for space-constrained designs. Verify that the 2.5 MHz frequency aligns with EMI constraints and inductor size requirements compared to lower-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL91127 series of high-efficiency buck-boost regulators. It shares functional similarities with other members like the ISL91127IRNZ-T but differs in output voltage configuration and package type. The series targets applications needing stable regulation from single-cell lithium batteries.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

ISL91127IRAZ-T7A is listed as a parameter-equivalent alternative.