TC648EOA

Overview

The TC648EOA is a fan speed controller manufactured by Microchip Technology, designed for precise thermal management in electronic systems. It operates within a supply voltage range of 3 V to 5.5 V and draws a typical operating supply current of 200 µA. The device features a single output capable of sourcing 5 mA and is housed in an 8-pin SOIC package suitable for surface mount technology. It supports an industrial temperature range from -40°C to +85°C and includes shutdown and over-temperature alert capabilities.

Feature Summary

• Integrates shutdown and over-temperature alert functions for enhanced system protection
• Provides low-power operation with minimal standby current consumption
• Supports direct interface with fans via a dedicated single output driver

Applications

• Fan speed control in computer peripherals
• Thermal management in embedded systems
• Temperature-regulated cooling solutions

Procurement Notes

Verify the specific suffix 'EOA' corresponds to the SOIC-8 package variant when ordering. Confirm end-of-life status as some TC648B variants are marked obsolete. Ensure compatibility with existing PCB footprints for 8-SOIC components. Check moisture sensitivity levels if storage conditions exceed specified limits. Validate that the 3V to 5.5V supply range matches the target application power rails.

Selection Notes

Select this component for applications requiring simple, low-cost fan control with thermal monitoring. Compare against the TC648BEPA for through-hole requirements or the TC648VUA for MSOP packaging alternatives. Consider the 200 µA quiescent current for battery-sensitive designs. Evaluate the 5 mA output drive capability against specific fan load requirements. Verify the -40°C to +85°C operating range meets environmental constraints.

Part Context

The TC648EOA belongs to the TC648 family of fan controllers from Microchip Technology. This series focuses on providing reliable motor driving with integrated safety alerts. The EOA suffix specifically denotes the SOIC-8 surface-mount package configuration. It serves as a specialized solution for managing cooling fans in consumer electronics and industrial equipment where space and power efficiency are critical design factors.

Replacement Considerations

TC648BEPA (PDIP-8), TC648VUA (MSOP-8), TC648VOA (SOIC-8)