NCP1203P60

AC DC Converters, Offline Switchers Overview

The NCP1203P60 is a current-mode PWM controller designed for universal off-line power supplies. It operates at a nominal switching frequency of 60 kHz, with an operational range spanning 57 kHz to 73 kHz. The device supports a maximum duty cycle of 80% and features a high-voltage startup circuit requiring 12.8 V to initiate operation, functioning within a supply voltage window of 7.8 V to 16 V. It utilizes an 8-pin DIP package and is rated for junction temperatures between -40°C and 125°C.

AC DC Converters, Offline Switchers Feature Summary

• Implements current-mode control architecture for stable regulation in flyback topologies.
• Integrates comprehensive protection mechanisms including overload, over-temperature, and short-circuit handling.
• Features high-voltage startup capability to facilitate universal AC input applications without external bias windings.

AC DC Converters, Offline Switchers Applications

• Powering surveillance camera domes
• General-purpose offline AC-DC converters
• Standby power supplies for consumer electronics

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity due to end-of-life status. Confirm RoHS compliance requirements as the specific part may not meet current environmental standards. Validate supplier authorization to ensure traceability. Check for lead-free alternatives if regulatory constraints apply. Review datasheet revisions for any pinout or electrical parameter updates before finalizing procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for designs requiring fixed-frequency current-mode control in isolated flyback converters. Ensure the application operates within the specified 57 kHz to 73 kHz frequency tolerance. Verify that the thermal management strategy accommodates the -40°C to 125°C junction temperature range. Confirm compatibility with the 8-DIP package footprint during PCB layout.

AC DC Converters, Offline Switchers Part Context

Part of the NCP1203 family from onsemi, which includes variants like NCP1203P40 and NCP1203P100 differing primarily in switching frequency. This series targets low-power offline applications using SMARTMOS technology. The P60 suffix specifically denotes the 60 kHz nominal frequency variant within the DIP-8 package lineup.

AC DC Converters, Offline Switchers Replacement Considerations

NCP12400CBBAB0DR2G is listed as a potential replacement by the manufacturer.

AC DC Converters, Offline Switchers FAQ

What is the typical switching frequency range for the NCP1203P60?

The device operates within a frequency range of 57 kHz to 73 kHz around its nominal 60 kHz setting.

Does the NCP1203P60 include internal power switches?

No, it is a controller IC that requires an external MOSFET for power switching.