NCP1252BDR2G

AC DC Converters, Offline Switchers Overview

The NCP1252BDR2G is a current mode PWM controller designed for forward and flyback applications. It supports a switching frequency of 500 kHz with a maximum duty cycle of 80%. The device operates within an input voltage range of 9 V to 28 V, providing a maximum output voltage of 12 V and an output current capability of 800 mA. It functions reliably across a temperature range of -40 °C to +125 °C. The component utilizes a SOIC-8 surface mount package.

AC DC Converters, Offline Switchers Feature Summary

• Peak current mode control architecture
• Adjustable switching frequency with internal slope compensation
• Locked primary overcurrent protection with fixed delay
• Automatic recovery under-voltage lockout

AC DC Converters, Offline Switchers Applications

• AC-DC power adapters
• ATX computer power supplies
• Flyback converter topologies
• Forward converter topologies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix BDR2G against the manufacturer datasheet to confirm the 80% duty cycle variant. Ensure the SOIC-8 package matches the target PCB footprint. Confirm RoHS compliance status through official documentation before finalizing procurement specifications.

AC DC Converters, Offline Switchers Selection Notes

Select this component for cost-sensitive AC-DC designs requiring peak current mode control. The B variant offers an 80% duty cycle limit, suitable for specific transformer turns ratios. Consider the 500 kHz frequency for compact magnetics while evaluating thermal performance in the SOIC-8 package.

AC DC Converters, Offline Switchers Part Context

Part of the NCP1252 series from onsemi, designed for efficient AC-DC conversion. The series includes variants with different duty cycle limits (A, C, D, E) to accommodate various topology requirements. This specific model targets forward and flyback applications with robust protection features.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1252ADR2G: Features a 47.5% duty cycle limit instead of 80%. NCP1252CDR2G: Features a 65% duty cycle limit. Verify duty cycle requirements when substituting these variants.