SMD911
High Voltage Switching Regulator Non-isolated CV Buck Converter
SMD911 Powered Two-Phase ECFAN
Built-in 450V High Voltage Regulator for High voltage supply
Operate at VAC 85V-265V or VDC 24V-450V
Fixed Switching Frequency :Typ. 90KHz
Output voltage external setting by FB pin
FB pin threshold voltage 1.0V
Built-in current limit circuit setting by external resistor
PFM control @ duty ratio 0%-5%, PWM control @ duty ration 5%-85%
Built-in soft start function
Excellent Gate Driving Capability for High Efficiency Performance
Switching Frequency Jittering for EMI Reduction
Package: SOP-8
Fan Type Input Voltage Input Power Coil Voltage Fan RPM
4-inch 240V 9W 48V 3,700
6-inch 240V 9.5W 48V 2,700
8-inch 240V 19W 48V 2200