LNK6765V

AC DC Converters, Offline Switchers Overview

The LNK6765V is a LinkSwitch-HP family AC/DC converter IC designed for high-efficiency offline flyback power supplies. It monolithically integrates a primary-side regulated (PSR) controller and a 650 V power MOSFET in an eSOP-12B package. The device supports output voltages up to 50 V with a maximum switching frequency of 132 kHz. It operates within an input voltage range of 85 VAC to 265 VAC and delivers up to 26 W of output power. Key electrical parameters include a maximum duty cycle of 66%, a quiescent supply current of 1.1 mA, and an operating temperature range from -40 °C to +125 °C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a primary-side regulated controller and a 650 V power MOSFET into a single package to simplify design.
• Employs multi-mode control engine to maintain regulation without audible noise or DCM efficiency limitations.
• Features enhanced peak current mode PWM control with internal line compensation for constant overload power.
• Includes comprehensive protection mechanisms such as auto-restart during short circuits and programmable shutdown delays.

AC DC Converters, Offline Switchers Applications

• LCD monitors and televisions
• Adapters and chargers
• Home appliances
• Embedded power supplies for DVD players and set-top boxes
• Industrial power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'V' against official Power Integrations documentation to confirm pinout compatibility and thermal characteristics. Ensure the selected package variant matches the intended PCB layout requirements. Confirm that the component meets all necessary regional safety certifications for the target application market before finalizing procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high efficiency across the entire load range without secondary side feedback components. The integrated PSR architecture eliminates the need for optocouplers and bias windings. Consider the 650 V rating for standard cost-sensitive applications where higher voltage derating is not strictly required. Evaluate the 132 kHz frequency for optimal transformer size versus EMI filtering needs.

AC DC Converters, Offline Switchers Part Context

The LNK6765V belongs to the LinkSwitch-HP series by Power Integrations, which focuses on high-power offline conversion. This series utilizes continuous conduction mode (CCM) technology to achieve superior performance compared to traditional discontinuous mode devices. The family is characterized by its ability to deliver up to 90 W while maintaining strict constant voltage regulation and low no-load power consumption.

AC DC Converters, Offline Switchers Replacement Considerations

The LNK6766K is a documented substitute within the same LinkSwitch-HP family offering higher power capability. Verify pin-to-pin compatibility and thermal management requirements when transitioning between these variants. Consult official datasheets to ensure functional equivalence regarding control schemes and protection features.