NCP5371MNR2G

Overview

The NCP5371MNR2G is a synchronous buck controller from onsemi designed for high-performance power delivery. It integrates two high-side and two low-side drivers with an internal bootstrap diode, supporting up to 4 phases. The device features a fixed 500 kHz switching frequency and supports input voltages from 4.5V to 28V. It includes programmable voltage ramp generation, current mode control, and comprehensive protection features such as over-current, over-voltage, and thermal shutdown.

Feature Summary

• Integrates dual high-side and dual low-side gate drivers with an internal bootstrap diode for simplified design.
• Supports multi-phase operation up to four phases with integrated phase shift capability.
• Features current mode control with programmable voltage ramp generation for stable transient response.

Applications

• Central processing unit (CPU) core voltage regulation modules.
• Graphics processing unit (GPU) power delivery systems.
• Server and workstation mainboard power architectures.

Procurement Notes

Verify the specific ordering suffix 'R2G' to ensure correct tape-and-reel packaging quantity and lead time specifications. Confirm that the component matches the RoHS-compliant status indicated by the suffix. Cross-reference the manufacturer's latest datasheet revision to ensure compatibility with current supply chain requirements and quality standards before finalizing procurement orders.

Selection Notes

Select this controller for applications requiring high efficiency and fast transient response in CPU or GPU power stages. Ensure the external components support the 500 kHz fixed frequency and that the input voltage range aligns with the system's 4.5V to 28V requirement. Consider the multi-phase capability if higher current output is needed compared to single-phase alternatives.

Part Context

This component belongs to onsemi's NCP53xx series of synchronous buck controllers. It is part of a family designed for demanding digital load applications. The MNR2G package indicates a small outline transistor-style surface mount package suitable for automated assembly processes in consumer and industrial electronics manufacturing.

Replacement Considerations

Direct pin-to-pin replacements may include other models within the NCP53xx series, such as the NCP5370 or NCP5372, depending on phase count requirements. Verify functional equivalence regarding driver strength and protection thresholds when substituting with similar products from onsemi or other manufacturers.