UC3849Q

Power Supply Controllers, Monitors Overview

The UC3849Q is a secondary-side controller IC designed for power supply applications. It operates with an input voltage range of 8V to 20V and supports switching frequencies up to 1000kHz. The device is housed in a 28-pin PLCC package. It functions as a pulse width modulation (PWM) controller, suitable for managing power conversion stages in electronic systems.

Power Supply Controllers, Monitors Feature Summary

• Secondary-side control functionality
• Pulse width modulation (PWM) operation
• High-frequency switching capability

Power Supply Controllers, Monitors Applications

• Power supply secondary side control
• Switching regulator management
• Electronic power conversion systems

Power Supply Controllers, Monitors Procurement Notes

Verify the component status carefully, as some sources indicate this part may be obsolete. Confirm the manufacturer origin, noting references to Luminary Micro or Siemens Semi alongside Texas Instruments. Ensure the package type matches the required 28-pin PLCC specification for your design integration.

Power Supply Controllers, Monitors Selection Notes

Select this component when secondary-side control is required for power supplies operating within the 8V to 20V input range. Consider the 1000kHz maximum switching frequency for high-density designs. Verify compatibility with the 28-pin PLCC footprint during PCB layout planning.

Power Supply Controllers, Monitors Part Context

This IC belongs to the Texas Instruments family of power management integrated circuits. It serves as a specialized controller for secondary-side regulation, distinct from primary-side controllers. The device integrates PWM logic to manage output stability in switching power architectures.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Texas Instruments resources for current alternatives if this obsolete part is no longer sourced.