ISL9104AIRUNZ-T7A

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9104AIRUNZ-T7A is a synchronous buck converter from the Renesas ISL9104A series, designed for high-efficiency power management in compact devices. It features a fixed 3.3V output with a maximum current capacity of 500mA. The device operates within an input voltage range of 2.7V to 6V and utilizes a fixed switching frequency of 4.3MHz. It is housed in a 6-lead uTDFN package (1.6x1.6mm) suitable for surface mount installation. The component supports an operating temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture ensures high efficiency across load conditions
• Fixed 4.3MHz switching frequency enables the use of small external passive components
• Low quiescent current operation in skip mode optimizes battery life under light loads

Voltage Regulators - DC DC Switching Regulators Applications

• Powering low-voltage microprocessors in portable electronics
• Battery-powered cellular phones and PDAs
• Compact IoT sensor nodes requiring efficient step-down regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official datasheets to confirm the fixed 3.3V output configuration, as other variants in the ISL9104A family offer different voltages or adjustable outputs. Confirm RoHS compliance status via the manufacturer's latest documentation. Note that discontinuation notices may affect long-term availability; check for active production status before finalizing design-in decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 3.3V rail is required with moderate current demands up to 500mA. The 4.3MHz frequency is optimal for minimizing board space compared to lower-frequency alternatives. Ensure the input supply remains within the 2.7V to 6V window. Consider thermal performance in the uTDFN package if ambient temperatures approach the upper limit of the specified range.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the ISL9104A family of low IQ synchronous buck converters originally developed by Intersil and now managed by Renesas Electronics. The family targets applications where size and efficiency are critical constraints. The ISL9104AIRUNZ-T7A specifically denotes the version with a fixed 3.3V output, distinguishing it from adjustable or other fixed voltage variants within the same series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult Renesas for current equivalent recommendations or cross-reference with similar 500mA synchronous buck regulators if this specific variant is discontinued.