ISL91110IRNZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91110IRNZ-T is a high-efficiency synchronous Buck-Boost DC-DC converter manufactured by Renesas Electronics Corporation. It operates within an input voltage range of 1.8 V to 5.5 V and provides a fixed output voltage of 3.3 V with a maximum output current of 2 A. The device features a switching frequency of 2.5 MHz and includes integrated 4 A internal power switches. It supports shutdown functionality and maintains low quiescent current of 35 uA. The component is housed in a TQFN-EP-20 package, suitable for surface mount installation, and functions across an operating temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous Buck-Boost topology supporting step-up and step-down conversion
• Integrated high-current internal switches for efficient power delivery
• Fixed 3.3 V output configuration optimized for specific load requirements
• Compact TQFN-EP-20 package design facilitating space-constrained layouts

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable electronic devices requiring stable voltage regulation
• Systems utilizing single-cell lithium-ion or lithium-polymer batteries
• Industrial control modules operating under variable supply conditions
• Embedded applications demanding high efficiency across wide input ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix designation against official Renesas documentation to confirm package type and tape/reel specifications. Ensure compatibility with standard surface-mount assembly processes. Confirm RoHS compliance status through current manufacturer declarations. Cross-reference the part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required without external resistor dividers. The integrated 2 A capability suits moderate load applications. Consider the 2.5 MHz switching frequency for balancing EMI and passive component size. Evaluate thermal performance within the specified -40°C to +85°C range. This model is appropriate where board space is limited due to its compact TQFN-EP-20 footprint.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the ISL91110 series of high-efficiency Buck-Boost converters. The family offers various packaging options including WLCSP and TQFN configurations. Variants within the series may differ in output voltage settings or current ratings. The IRNZ-T suffix specifically denotes the TQFN-EP-20 package with tape and reel shipping format, distinguishing it from other housing types in the product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include ISL91110IINZ-T and ISL91110IRNZ-T7A. Verify pinout compatibility and electrical parameter alignment before substitution. Check for identical package dimensions to ensure mechanical fit. Confirm that alternative variants support the same 3.3 V fixed output requirement.