UC2842D8G4

Power Supply Controllers, Monitors Overview

The UC2842D8G4 is a high-performance fixed-frequency current mode controller manufactured by Texas Instruments. It operates within a supply voltage range of 10 V to 35 V and features an internal precision oscillator with a frequency range up to 500 kHz. The device includes a temperature-compensated bandgap reference, a high-gain error amplifier, and a PWM comparator. It provides a regulated output capable of sourcing or sinking 1 A of peak drive current. The component is housed in an 8-pin SOIC package.

Power Supply Controllers, Monitors Feature Summary

• Current-mode control architecture for improved line regulation and transient response
• Integrated high-current push-pull output stage for direct gate driving
• Precision oscillator with external timing resistor and capacitor setting
• Built-in undervoltage lockout with hysteresis for reliable startup

Power Supply Controllers, Monitors Applications

• DC-to-DC converters
• Forward converters
• Push-pull converters

Power Supply Controllers, Monitors Procurement Notes

Verify the complete part number including suffixes such as 'D8' and 'G4' against official Texas Instruments documentation to ensure correct package type and environmental compliance. Confirm that the specific revision matches your design requirements. Cross-reference with authorized distributors to validate authenticity and traceability before procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing isolated or non-isolated DC-DC converters requiring current-mode control. Ensure the input voltage stays within the specified operating range. Verify that the external components selected for the oscillator and feedback network align with the controller's electrical characteristics. Consider thermal management requirements based on the expected load and ambient conditions.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCx842 family of current-mode controllers. It shares functional similarities with other members like the UC2842AN but differs in package style and manufacturing specifications. The family is widely used in power supply designs due to its robust performance and ease of implementation.

Power Supply Controllers, Monitors Replacement Considerations

Direct pin-compatible substitutes include the UC2842AN and UC2842N from Texas Instruments. Verify that any alternative component meets the same electrical specifications and package dimensions. Check for differences in operating temperature ranges and packaging materials if environmental compliance is critical.