NCV51400MWTXG

Overview

The NCV51400MWTXG is an automotive-grade DDR termination regulator designed for low input voltage and minimal external component systems. It integrates a high-performance, low-dropout (LDO) linear regulator capable of simultaneous sourcing and sinking current. The device supports input voltages of 2.5V, 3.3V, and 5V, with a PVCC range of 1.1V to 3.5V. It features a fast feedback loop allowing the use of small ceramic capacitors for rapid load transient response, requiring a minimum output capacitance of 20μF. The part operates within a temperature range of -40°C to +125°C and utilizes a DFN-10 exposed pad package.

Feature Summary

• Integrated source/sink tracking termination regulator with fast feedback loop for rapid load transient response
• Supports flexible input tracking via VRI pin with direct or resistor divider connection
• Includes remote sensing capability through VTTS pin for accurate VTT feedback
• Built-in protection mechanisms including soft start, UVLO, overcurrent limit, and thermal shutdown

Applications

• DDR memory termination regulation in space-constrained automotive systems
• Low input voltage power architectures requiring minimal external components
• Applications demanding high reliability under extreme temperature conditions

Procurement Notes

Verify that the specific suffix 'MWTXG' corresponds to the automotive grade variant with side-wettable flanks for optical inspection if required by your assembly process. Confirm that the PVCC supply voltage remains within the 1.1V to 3.5V range during operation. Ensure the design accounts for the exposed pad thermal requirements inherent to the DFN-10 package for adequate heat dissipation at maximum operating temperatures.

Selection Notes

Select this component when designing DDR termination circuits that require simultaneous source and sink capabilities with minimal external passive components. It is suitable for applications where board space is limited and fast transient response is critical. Consider the NCV51400MWTXG over non-automotive variants if AEC-Q100 qualification is mandatory for the target system environment.

Part Context

This part belongs to the NCP51400 series of DDR termination regulators from onsemi. The NCV prefix indicates it is qualified for automotive applications, distinguishing it from the standard NCP51400. It shares functional similarities with other members of the series but offers specific automotive reliability standards and packaging options like side-wettable flanks for enhanced manufacturing inspection.

Replacement Considerations

The NCP51400MWTXG is the commercial equivalent; verify if automotive qualification is strictly necessary. Other series members like NCP51401 or NCP51402 may offer different current ratings or features.