UC3842ANG4

Power Supply Controllers, Monitors Overview

The UC3842ANG4 is a current-mode PWM controller manufactured by Texas Instruments, designed for high-performance DC-DC switching applications. It operates within a supply voltage range of 10V to 30V and supports switching frequencies up to 500 kHz. The device features a single output capable of sourcing 200 mA with rise and fall times of 50 ns. It accommodates Boost, Buck, Flyback, and Forward topologies, offering a maximum duty cycle of 100%. The component functions reliably across an operating temperature range of 0°C to +70°C and is housed in a PDIP-8 through-hole package.

Power Supply Controllers, Monitors Feature Summary

• Implements current-mode control architecture for precise regulation
• Supports multiple converter topologies including flyback and forward
• Features integrated oscillator with frequency up to 500 kHz

Power Supply Controllers, Monitors Applications

• Flyback converter implementations
• Forward converter designs
• Boost and Buck DC-DC switching regulators

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance status as per manufacturer documentation. Confirm that the PDIP-8 package matches the target PCB footprint requirements. Ensure the operating temperature range aligns with the intended environmental conditions. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring a robust current-mode PWM solution with standard through-hole packaging. Consider the 500 kHz switching limit when designing magnetic components. Evaluate the 200 mA output drive capability against gate charge requirements. Verify that the 10V to 30V Vcc range suits the available auxiliary power supply.

Power Supply Controllers, Monitors Part Context

This part belongs to the UC3842 series of current-mode PWM controllers from Texas Instruments. It shares functional similarities with other members of the family but is distinguished by its specific package type and manufacturing revisions. The UC3842ANG4 represents a variant optimized for general-purpose power management tasks within the specified industrial temperature range.

Power Supply Controllers, Monitors Replacement Considerations

Direct substitutes include UC3842AM from Microchip Technology. Other compatible alternatives may exist within the broader UC3842 family depending on package and temperature grade requirements.