NCS1002ADR2G

Overview

The NCS1002ADR2G is a secondary-side controller for switch-mode power supplies, manufactured by onsemi. It operates within a supply voltage range of 3V to 32V and supports a supply current of 200µA. The device functions in an 8-SOIC package with a wide operating temperature range from -40°C to 105°C. Designed for surface mount installation, it provides constant voltage and constant current regulation capabilities for isolated power conversion applications.

Feature Summary

• Implements constant voltage and constant current control modes for secondary-side regulation
• Features integrated high-voltage startup circuitry for simplified design
• Includes protection mechanisms against overvoltage, undervoltage, and open-loop faults

Applications

• Secondary-side control for flyback converters
• Constant voltage/constant current battery chargers
• LED driver power supplies

Procurement Notes

Verify the complete part number including the suffix 'ADR2G' to ensure correct packaging and RoHS compliance. Confirm that the application requires secondary-side control rather than primary-side alternatives. Check datasheet specifications for thermal management requirements associated with the SOIC-8 package in enclosed designs.

Selection Notes

Select this component when secondary-side feedback is required for precise output regulation. Compare against primary-side controllers if isolation barriers are not needed or cost reduction is prioritized. Ensure the input voltage range of 3V to 32V aligns with the auxiliary winding or bias supply characteristics of the target transformer design.

Part Context

This device belongs to the NCS1002 family of secondary-side controllers. It complements other onsemi power management solutions by providing accurate regulation for isolated topologies. The series focuses on reducing system complexity by integrating startup and protection features typically found in discrete implementations.

Replacement Considerations

Cross-reference with NCS1002A for functional compatibility. Verify pinout and electrical parameters against alternative secondary-side controllers from other manufacturers before substitution.