UC3914N

Overview

The UC3914N is a single-channel hot swap voltage controller manufactured by Texas Instruments. It operates within a supply voltage range of 5 V to 35 V and draws a typical operating supply current of 20 mA. Designed for commercial temperature applications, it functions between 0°C and +70°C. The device is housed in an SOIC-18 surface-mount package and includes power failure detection capabilities. This component belongs to the UC3914 series under PMIC controllers.

Feature Summary

• Integrates hot swap control functionality for safe insertion and removal of circuit boards
• Includes built-in power failure detection logic
• Supports single-channel operation with wide input voltage tolerance

Applications

• Server backplane power distribution systems
• Telecommunications equipment power modules
• Industrial control system hot-plug interfaces

Procurement Notes

Verify the specific suffix against official documentation, as packaging or environmental compliance variations may exist. Confirm current production status via manufacturer notices, as end-of-life notifications may affect long-term availability. Ensure the ordering part number matches the required package type and temperature grade before procurement.

Selection Notes

Select this component when designing systems requiring controlled power-up sequencing and overcurrent protection for hot-pluggable modules. Verify that the SOIC-18 package fits the PCB layout constraints. Ensure the 5 V to 35 V input range aligns with the system bus voltage requirements.

Part Context

This device is part of the UC3914 family of hot swap controllers from Texas Instruments. It shares functional similarities with other members of the series but is distinguished by its specific pinout, package configuration, and electrical characteristics tailored for commercial-grade applications.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pin-to-pin compatibility and electrical parameter alignment before replacing.