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CS3842A

ON Semiconductor
Part Number CS3842A
Manufacturer ON Semiconductor
Description Off-Line Current Mode PWM Controller
Published Apr 7, 2007
Detailed Description www.DataSheet4U.com CS2842A, CS3842A, CS2843A, CS3843A Off−Line Current Mode PWM Control Circuit with Undervoltage Lock...
Datasheet PDF File CS3842A PDF File

CS3842A
CS3842A

Overview
www.
DataSheet4U.
com CS2842A, CS3842A, CS2843A, CS3843A Off−Line Current Mode PWM Control Circuit with Undervoltage Lockout The CS284XA, CS384XA provides all the necessary features to implement off−line fixed frequency current−mode control with a minimum number of external components.
The CS384XA family incorporates a new precision temperature−controlled oscillator with an internally trimmed discharge current to minimize variations in frequency.
A precision duty−cycle clamp eliminates the need for an external oscillator when a 50% duty−cycle is used.
Duty−cycles greater than 50% are also possible.
On board logic ensures that VREF is stabilized before the output stage is enabled.
Ion implant resistors provide tighter control of undervoltage lockout.
Other features include low startup current, pulse−by−pulse current limiting, and a high−current totem pole output for driving capacitive loads, such as the gate of power MOSFET.
The output is LOW in the off state, consistent with N−channel d...


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