NCP1013ST65T3G

AC DC Converters, Offline Switchers Overview

The NCP1013ST65T3G is a self-supplied monolithic switcher integrating a fixed-frequency current-mode controller and a 700 V MOSFET in an SOT-223 package. It operates at a switching frequency of 65 kHz, featuring a built-in 700 V MOSFET with typical RDS(on) of 11Ω. The device includes internal 1.0 ms soft-start, latched overvoltage protection, and auto-recovery short-circuit protection. It supports skip-cycle operation for low acoustic noise and achieves below 100 mW standby power when an auxiliary winding is utilized.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage 700 V MOSFET with the control logic to minimize external component count.
• Employs dynamic self-supply technology, eliminating the requirement for an auxiliary transformer winding.
• Utilizes skip-cycle mode at low peak currents to ensure quiet operation without acoustic noise generation.
• Incorporates frequency jittering mechanisms to improve electromagnetic interference signatures.

AC DC Converters, Offline Switchers Applications

• Offline SMPS designs requiring rugged and low-cost power supply solutions
• Applications demanding minimal standby power consumption below 100 mW
• Power supplies where acoustic noise must be eliminated during nominal load operation

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix T3G corresponds to the SOT-223 reel packaging configuration as documented. Confirm that the 65 kHz variant matches the system timing requirements, distinct from other frequencies in the series. Ensure the design accounts for the 700 V breakdown rating of the integrated MOSFET. Check for obsolescence status updates from the manufacturer regarding this specific part number before finalizing procurement plans.

AC DC Converters, Offline Switchers Selection Notes

Select this component for offline applications prioritizing simplicity through integrated high-voltage switching. The absence of an auxiliary winding requirement simplifies transformer design and reduces bill of materials cost. Consider the 65 kHz operating frequency for trade-offs between size and efficiency. The built-in protections reduce design complexity but require adherence to the specified thermal and electrical limits defined in the datasheet.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP101X series of monolithic switchers, which also includes variants operating at 100 kHz and 130 kHz. The series shares common features such as dynamic self-supply and skip-cycle modes. The ST65 designation specifically indicates the 65 kHz switching frequency option within the SOT-223 package family, differentiating it from higher-frequency counterparts like the NCP1014 or NCP1015.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1013ST100T3G offers identical functionality with a 100 kHz switching frequency. NCP1013ST130T3G provides the same integration at 130 kHz. These parts share the same package and feature set, differing only in the fixed operating frequency parameter.