UC2842BDG

DC DC Switching Controllers Overview

The UC2842BDG is a high-performance current mode PWM controller from onsemi, designed for offline and DC-DC converters. It operates with a fixed frequency up to 500 kHz and supports Boost, Flyback, and Forward topologies. The device features a 1 A output drive capability, a maximum duty cycle of 96%, and an operating supply voltage range of 10 V to 30 V. It utilizes a PDIP-8 package, functions within a temperature range of -25°C to +85°C, and includes integrated protection mechanisms such as under-voltage lockout and per-cycle current limiting.

DC DC Switching Controllers Feature Summary

• High-current push-pull output stage capable of driving power MOSFETs directly
• Integrated oscillator with precise frequency control and temperature compensation
• Built-in hysteresis for reliable under-voltage lockout operation
• Per-cycle current limiting with latch functionality for robust fault protection

DC DC Switching Controllers Applications

• Offline flyback converter designs
• Forward converter architectures
• Boost DC-DC step-up regulators
• General-purpose isolated power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'DG' against the manufacturer's official documentation to confirm the exact package variant and tape-and-reel specifications. Ensure that the ordering information matches the required industrial temperature grade and lead-free compliance standards defined in the datasheet before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when a fixed-frequency current-mode control strategy is required for single-ended converter topologies. The UC2842BDG is suitable for applications needing a maximum duty cycle near 100% and direct gate drive capabilities without additional buffer stages. Evaluate the external timing resistor and capacitor requirements to set the desired switching frequency within the guaranteed operational range.

DC DC Switching Controllers Part Context

This part belongs to the UCx842B series of current-mode PWM controllers manufactured by onsemi. These devices are engineered to provide economical and efficient solutions for power conversion systems while minimizing the number of external components. The series is widely recognized for its reliability in standard power management applications requiring precise duty cycle regulation.

DC DC Switching Controllers Replacement Considerations

UC2842AN

DC DC Switching Controllers FAQ

What is the maximum switching frequency supported by the UC2842BDG?

The device supports a guaranteed switching frequency up to 250 kHz and can operate at frequencies up to 500 kHz.

How does the UC2842BDG handle overcurrent conditions?

It incorporates per-cycle current limiting using a latch-based PWM mechanism to protect the system during fault conditions.