UC3845DTR

Power Supply Controllers, Monitors Overview

The UC3845DTR is a current-mode PWM controller manufactured by Texas Instruments, designed for DC-DC switching applications. It operates within a supply voltage range of 7.6V to 30V and supports a maximum switching frequency of 500 kHz. The device features a maximum duty cycle of 50% and provides a 1A output drive capability. It is housed in a 14-SOIC package with a width of 3.90mm. The component functions across an operating temperature range of 0°C to 70°C and complies with RoHS3 standards.

Power Supply Controllers, Monitors Feature Summary

• Implements current-mode pulse-width modulation control architecture
• Supports multiple converter topologies including boost, buck, flyback, and forward configurations
• Provides high-current output drive capability for direct gate driving

Power Supply Controllers, Monitors Applications

• Boost converter designs
• Buck converter implementations
• Flyback power supply circuits
• Forward converter systems

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'DTR' indicates tape-and-reel packaging when sourcing. Confirm RoHS3 compliance status matches project requirements. Ensure the 14-SOIC footprint aligns with PCB layout specifications. Check for any recent product change notices regarding packaging or material composition updates from Texas Instruments.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring current-mode control with a fixed 50% maximum duty cycle limit. Suitable for applications needing a 1A output driver in a surface-mount format. Consider the 500 kHz switching frequency constraint for magnetic component selection. Verify thermal management capabilities within the specified 0°C to 70°C ambient temperature range.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCx845 series of current-mode controllers from Texas Instruments. It shares functional similarities with other variants in the family but is distinguished by its specific package type and manufacturing revision. The UC3845DTR represents the commercial grade version available in reel packaging for automated assembly processes.

Power Supply Controllers, Monitors Replacement Considerations

UC3845ADTR is a documented alternative offering similar functionality in the same package.