CS51031GDR8

DC DC Switching Controllers Overview

The CS51031GDR8 is a fast PFET buck controller manufactured by onsemi, designed for step-down DC-DC conversion applications. It operates within a supply voltage range of 4.3V to 20V and supports a switching frequency of 200kHz. The device features a maximum duty cycle of 83.3% and includes control characteristics such as frequency control and soft start. It is housed in an 8-SOIC package with a width of 3.90mm and is rated for operation between 0°C and 70°C ambient temperature.

DC DC Switching Controllers Feature Summary

• Fast PFET Buck Controller topology for efficient step-down power conversion
• Integrated soft start functionality to manage inrush current during startup
• Frequency control capability for synchronization or fixed-frequency operation
• Designed for positive output configurations using external PFETs

DC DC Switching Controllers Applications

• Point-of-load regulation in industrial systems
• Power management for automotive electronics
• General-purpose DC-DC step-down converter designs

DC DC Switching Controllers Procurement Notes

Verify component status carefully as this part may be discontinued. Confirm RoHS compliance requirements against project specifications since the component is listed as non-compliant. Ensure the 8-SOIC package dimensions match the PCB footprint design. Check for valid replacement options if long-term supply stability is required for production.

DC DC Switching Controllers Selection Notes

Select this controller when a fast PFET solution is preferred over NMOS for high-side switching. Consider the 200kHz switching frequency for balancing efficiency and component size. Verify that the input voltage stays within the 4.3V to 20V operating range. Ensure thermal management aligns with the 0°C to 70°C ambient temperature rating for the intended application environment.

DC DC Switching Controllers Part Context

This component belongs to the CS51031 family of buck controllers from onsemi. It is specifically engineered for applications requiring rapid transient response and efficient power delivery. The device integrates essential control loops while relying on external power components for current handling. It serves as a core element in switch-mode power supply architectures.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult official manufacturer channels for current obsolescence notices and recommended alternatives.