NCP3902FCCTBG

Overview

The NCP3902FCCTBG is a high-efficiency synchronous step-down DC-DC converter from onsemi, designed for automotive and industrial applications. It integrates two independent buck channels capable of delivering up to 2A per output with an input voltage range of 4.5V to 36V. The device features adjustable switching frequencies up to 2MHz to optimize inductor size and efficiency. Integrated protection mechanisms include overcurrent protection, thermal shutdown, and undervoltage lockout. Packaged in a compact QFN format, it supports flexible power distribution architectures requiring multiple regulated rails from a single high-voltage source.

Feature Summary

• Dual-channel synchronous rectification architecture for efficient power conversion
• Wide input voltage compatibility suitable for automotive bus systems
• Integrated protection circuits ensuring operational reliability under fault conditions

Applications

• Automotive infotainment and gateway power distribution
• Industrial IoT sensor node power supplies
• Portable instrumentation multi-rail regulation

Procurement Notes

Verify the specific suffix FCCTBG against the manufacturer's official datasheet to confirm pin configuration and tape-and-reel specifications. Ensure the component matches the required operating temperature grade for the intended application environment. Cross-reference the ordering number with authorized distributors to validate authenticity and traceability documentation prior to procurement.

Selection Notes

Select this component when designing systems requiring dual isolated outputs from a wide-range input voltage. Evaluate the thermal performance based on the expected load current and PCB copper area. Consider the switching frequency settings to balance between passive component size and electromagnetic interference levels. Ensure the control loop stability meets the transient response requirements of the downstream loads.

Part Context

This part belongs to the NCP390x series of synchronous buck converters, which are engineered for robust performance in demanding environments. The series offers flexibility through configurable parameters and integrated safety features. It serves as a key solution for designers needing compact, high-density power management modules that can handle voltage fluctuations common in automotive and industrial networks.

Replacement Considerations

Consult the manufacturer's cross-reference guide for direct replacements. Verify that any substitute component maintains identical pinout compatibility and electrical characteristics. Ensure the alternative part meets the same thermal and regulatory standards required by the original design specification.