RT9174GS

Overview

The RT9174GS is a linear regulator controller manufactured by Richtek USA Inc., designed for positive adjustable output configurations. It supports three independent outputs and operates within an input voltage range of 3V to 8V. The device draws a supply current of 800µA and functions reliably across a wide operating temperature range from -40°C to 125°C. It is housed in an 8-SOP package with a width of 3.90mm, suitable for surface-mount applications requiring compact power management solutions.

Feature Summary

• Supports three independent adjustable output channels
• Operates with low supply current consumption
• Wide input voltage tolerance for flexible power sources
• Extended temperature rating for harsh environments

Applications

• Portable electronic devices requiring multiple voltage rails
• Battery-powered systems with limited power budgets
• Industrial control modules operating in extreme temperatures
• Communication equipment needing stable linear regulation

Procurement Notes

Verify the specific suffix 'GS' against the official Richtek datasheet to confirm pinout compatibility and thermal characteristics. Ensure the supplier provides valid RoHS compliance documentation. Confirm that the 8-SOP package dimensions match your PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when designing circuits requiring three separate adjustable voltages from a single controller IC. It is appropriate for systems where input voltage varies between 3V and 8V. Consider the 800µA quiescent current impact on overall battery life. The wide temperature range makes it suitable for industrial or automotive-grade applications if other parameters align.

Part Context

This part belongs to the Richtek RT9174 series of linear regulator controllers. Unlike integrated LDOs, this component requires external pass transistors to handle load currents. It serves as a central control unit for multi-rail power distribution in compact electronics, distinguishing it from fixed-output regulators or single-channel controllers.

Replacement Considerations

Check for direct pin-to-pin replacements within the RT9174 family. Verify if alternative manufacturers offer compatible 3-output linear regulator controllers with similar input ranges and SOP-8 packaging. Ensure external component values remain valid for any substitute parts.