The SD6897AH is a single stage primary side regulation (PSR) power factor correction (PFC) controller, built-in 650V high voltage power MOSFET, specially designed for LED driver.
The Device adopts constant on time operation to achieve high power factor.
The SD6897AH provides accurate constant current control and operates in boundary conduction mode (BCM) with high efficiency.
The Device adopts primary side regulation eliminating the opto-couple, secondary feedback control and loop compensation for reducing design and cost.
The SD6897AH provides completed protections such as short LED protection, open LED protection and over temperature protection, etc.
PSR flyback topology
Boundary Conduction Mode
Low start-up current
Built-in 650V high voltage power MOSFET
Leading edge blanking
Constant on time control
VCC over voltage protection
VCC under voltage lockout
Over temperature protection
Cycle by cycle current limiting
Peak current compensation
Short LED protection and Open LED protection
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