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CS52843 Current Mode PWM Control Circuit
The CS52843 provides all the necessary features to implement off−line fixed frequency current−mode control with a minimum number of external components. The CS52843 incorporates a new precision temperature−controlled oscillator to minimize variations in frequency. An undervoltage lockout ensures that VREF is stabilized before the output stage is enabled. In the CS52843 turn on is at 8.4 V and turn off at 7.6 V. Other features include low start−up current, pulse−by−pulse current limiting, and a high−current totem pole output for driving capacitive loads, such as gate of a power MOSFET. The output is low in the off state, consistent with N−channel devices.
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CS52843 Datasheet
