UCC28C53DGKR

DC DC Switching Controllers Overview

The UCC28C53DGKR is a BiCMOS low-power current-mode PWM controller from Texas Instruments, designed for industrial applications. It supports Flyback topology with a fixed switching frequency of 110 kHz and a maximum duty cycle of 100%. The device operates within a supply voltage range up to 30 V, drawing a typical operating supply current of 1.3 mA. It features rail-to-rail output drivers capable of sourcing 200 mA. The component is housed in an 8-pin VSSOP package and functions reliably across an extended temperature range from -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• BiCMOS technology enables low-power operation suitable for energy-efficient designs
• Current-mode control architecture provides inherent line feedforward and simple compensation
• Rail-to-rail output stage drives external power switches directly
• Integrated shutdown pin allows for system-level power management

DC DC Switching Controllers Applications

• Industrial isolated DC-DC converters
• Low-power flyback power supplies
• Battery chargers requiring high efficiency
• Adapters and consumer electronics power stages

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'DGKR' corresponds to the VSSOP-8 package and tape-and-reel delivery format as defined in the official datasheet. Confirm that the RoHS compliance status matches current environmental regulations for your region. Ensure the ordering part number aligns with the required temperature grade and manufacturing lot traceability standards before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when designing flyback converters requiring a fixed 110 kHz frequency and high duty cycle capability. It is appropriate for applications needing low quiescent current and robust industrial temperature performance. Consider the VSSOP-8 package constraints for thermal dissipation and PCB layout space compared to SOIC alternatives within the same family.

DC DC Switching Controllers Part Context

This part belongs to the UCCx8C5x series of BiCMOS low-power current-mode PWM controllers. It shares architectural similarities with other members like the UCC28C52 and UCC28C54 but differs in package type and specific operational parameters such as duty cycle limits. The series targets cost-sensitive, high-volume industrial and commercial power conversion markets.

DC DC Switching Controllers Replacement Considerations

UCC28C52DGKR offers similar electrical characteristics but may differ in duty cycle specifications or internal timing. UCC28C54DR provides comparable functionality in an SOIC-8 package, requiring footprint adaptation. Verify pinout compatibility and thermal performance when substituting with these variants.