NCP1835MN20R2G

Overview

The NCP1835MN20R2G is a high-efficiency, synchronous buck converter from onsemi designed for portable applications. It integrates two power switches and operates with an input voltage range of 2.7V to 5.5V. The device delivers up to 2A output current with adjustable output voltages. It features a fixed switching frequency of 2MHz and includes comprehensive protection mechanisms such as over-current, over-temperature, and soft-start functionality.

Feature Summary

• Integrates high-side and low-side N-channel MOSFETs for compact solution size
• Supports wide input voltage range suitable for single-cell lithium-ion batteries
• Includes programmable soft-start to limit inrush current during startup
• Features adaptive constant off-time control for fast transient response

Applications

• Portable electronics such as smartphones and tablets
• Wireless communication modules
• Personal digital assistants (PDAs)
• MP3 players and audio devices

Procurement Notes

Verify the complete part number including suffixes like 'R2G' which indicates tape and reel packaging and lead-free status. Confirm the manufacturer source is authorized to ensure component authenticity. Check datasheet revisions for any updates to electrical characteristics or recommended operating conditions before finalizing procurement specifications.

Selection Notes

Select this component when a small footprint and high efficiency are required for battery-powered systems. Ensure the application demands an output current within the 2A limit. Verify that the desired output voltage falls within the adjustable range supported by the external resistor divider network. Consider thermal management requirements based on the expected load and ambient temperature conditions.

Part Context

This device belongs to onsemi's NCP18xx series of synchronous step-down converters. It is part of a family designed for space-constrained mobile applications requiring efficient power conversion from single-cell lithium sources. The MN package provides a compact surface-mount solution suitable for automated assembly processes in consumer electronics manufacturing.

Replacement Considerations

Direct replacements may include other models from the NCP18xx series with similar pinouts and electrical specifications. Verify compatibility regarding switching frequency, output current capability, and control interface. Consult official substitution guides provided by onsemi to ensure functional equivalence without redesigning the surrounding circuitry.