LNK6775E

AC DC Converters, Offline Switchers Overview

The LNK6775E is a LinkSwitch-HP family AC/DC converter IC designed for flyback topologies. It integrates a primary-side regulated controller and a high-voltage power MOSFET into a single package. The device supports an input voltage range of 85 VAC to 265 VAC. It delivers up to 31 W at 85–265 VAC and 42 W at 230 VAC. Key electrical parameters include a switching frequency of 132 kHz, a maximum duty cycle of 66%, and a supply current of 1.1 mA. The component operates within a temperature range of -40°C to +125°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a primary-side regulated controller with a high-voltage power MOSFET in a monolithic package
• Utilizes multi-mode control engine to maintain output regulation across varying load conditions
• Features enhanced peak current mode PWM control scheme for continuous conduction mode operation
• Includes comprehensive protection mechanisms such as overvoltage, overload, and thermal shutdown

AC DC Converters, Offline Switchers Applications

• LCD monitors and televisions
• Power adapters
• Home appliances
• Embedded power supplies including DVD players and set-top boxes
• Industrial power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and packaging variations. Confirm RoHS compliance status through manufacturer documentation. Ensure the selected variant matches the required thermal management strategy for the target application environment.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring precise constant voltage regulation without secondary side feedback components. Consider the integrated 725V MOSFET rating for robust derating requirements. Evaluate the 132 kHz switching frequency impact on transformer size and EMI filter complexity relative to system constraints.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LinkSwitch-HP series from Power Integrations. The series utilizes a newly developed analogue control scheme enabling CCM PSR power supplies up to 90W. It eliminates DCM efficiency limitations and audible noise common in traditional offline switchers.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official substitution lists for verified alternatives. Cross-reference pinouts and electrical ratings before implementation.