UC3572DTR

DC DC Switching Controllers Overview

The UC3572DTR is a flyback switching controller from Texas Instruments designed for negative output applications. It operates within a temperature range of -40°C to +85°C and utilizes an SOIC-8 surface-mount package. The device supports a switching frequency between 10 kHz and 200 kHz with a maximum duty cycle of 96%. It provides a negative output voltage ranging from -70 V to -1 V and delivers an output current of 500 mA. The component functions as a pulse width modulator specifically configured for flyback topologies.

DC DC Switching Controllers Feature Summary

• Configured for negative output flyback power supply architectures
• Supports variable switching frequencies up to 200 kHz
• Includes internal circuitry for pulse width modulation control

DC DC Switching Controllers Applications

• Negative voltage generation in isolated power supplies
• Flyback converter designs requiring negative rails
• Industrial power management systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix DTR indicates tape and reel packaging when sourcing. Confirm the extended industrial temperature rating (-40°C to +85°C) matches your environmental requirements. Ensure compatibility with flyback transformer designs intended for negative output voltages. Check for any recent product change notifications regarding manufacturing updates.

DC DC Switching Controllers Selection Notes

Select this component when a negative output voltage is required from a flyback topology. Compare against the UC3572D if tube packaging is preferred over tape and reel. Consider the UC2572DTR if a wider commercial temperature range is acceptable, though the UC3572DTR offers broader industrial coverage. Verify that the 500 mA output current capability meets the load requirements.

DC DC Switching Controllers Part Context

This part belongs to the UC3572 series of switching controllers. It is distinct from the UC3573, which is designed for buck step-down regulators. The UC3572 series focuses on flyback applications, differentiating it from other Texas Instruments PWM controllers like the UCC3802 or UCC3889 which support different topologies such as boost or forward converters.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute: UC3572D.