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1200AP40

ON Semiconductor
Part Number 1200AP40
Manufacturer ON Semiconductor
Description NCP1200AP40
Published Mar 3, 2009
Detailed Description NCP1200A www.DataSheet4U.com PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Low Standby Power Ho...
Datasheet PDF File 1200AP40 PDF File

1200AP40
1200AP40

Overview
NCP1200A www.
DataSheet4U.
com PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Low Standby Power Housed in SOIC−8 or PDIP−8 package, the NCP1200A enhances the previous NCP1200 series by offering a reduced optocoupler current together with an increased drive capability.
Due to its novel concept, the circuit allows the implementation of complete off−line AC−DC adapters, battery charger or a SMPS where standby power is a key parameter.
With an internal structure operating at a fixed 40 kHz, 60 kHz or 100 kHz, the controller supplies itself from the high−voltage rail, avoiding the need of an auxiliary winding.
This feature naturally eases the designer task in battery charger applications.
Finally, current−mode control provides an excellent audio−susceptibility and inherent pulse−by−pulse control.
When the current setpoint falls below a given value, e.
g.
the output power demand diminishes, the IC automatically enters the so−called skip cycle mode and provides excellent ...


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