NCV8856ADBR2G

Overview

The NCV8856ADBR2G is an automotive synchronous buck controller manufactured by onsemi. It operates with a fixed switching frequency of 500 kHz and delivers a regulated output voltage of 6 V. The device supports a maximum operating temperature of +150 C and functions within a minimum ambient temperature of -40 C. Designed for surface mount installation, it utilizes a TSSOP-20 package. The controller requires a working supply voltage of 6.5 V and includes shutdown functionality for power management efficiency.

Feature Summary

• Synchronous buck topology optimized for automotive applications
• Fixed high-frequency operation at 500 kHz for compact design
• Integrated shutdown control for enhanced power management

Applications

• Automotive power distribution systems
• On-board charger (OBC) auxiliary power supplies
• Infotainment system voltage regulation
• ADAS sensor power conditioning

Procurement Notes

Verify the specific suffix 'DBR2G' to confirm the TSSOP-20 package and reel packaging configuration. Ensure the component meets AEC-Q100 qualification requirements if mandated by the target automotive application. Cross-reference the datasheet revision against the manufacturing date code to confirm compliance with current RoHS directives and material declarations prior to final procurement authorization.

Selection Notes

Select this controller when a fixed 6 V output is required from a higher automotive bus voltage. The 500 kHz frequency allows for smaller external inductors compared to lower-frequency alternatives. Consider the TSSOP-20 thermal performance for the expected load current. Verify that the input voltage range accommodates the vehicle's cold crank and load dump conditions without exceeding absolute maximum ratings.

Part Context

This component belongs to the NCV8856A series of synchronous buck controllers designed specifically for harsh automotive environments. It complements other onsemi PMIC solutions by providing efficient step-down conversion. The series emphasizes reliability and thermal robustness, aligning with industry standards for under-the-hood and cabin electronics where long-term stability and wide temperature operation are critical for safety and performance.

Replacement Considerations

Direct substitutes include other onsemi automotive buck controllers with similar voltage and frequency specifications, such as variants within the NCV88xx family. Verify pin compatibility and thermal characteristics before substitution. Non-onsemi equivalents require careful evaluation of switching frequency tolerance and shutdown logic alignment.