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The SD778XD is a low PFC non isolated  buck controller, it has a built-in high voltage power MOSFET, is used together with a pre-stage APFC boost circuit to achieve two stage no flicker application.

The SD778XD provides accurate constant current control and operates in boundary conduction mode (BCM). The SD778XD provides complete protections such as short LED protection, open LED protection and over temperature protection, etc.

Main feature

Non isolated buck topology

Boundary Conduction Mode

Built-in 500V high voltage power MOSFET

Leading edge blanking

VCC under voltage lockout

Over temperature protection

Cycle by cycle current limiting

Short LED protection and Open LED protection

Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SD7782D DIP-7-300-2.54 SD7782D Halogen free Tube
SD7784D DIP-7-300-2.54 SD7784D Halogen free Tube
Block Diagram