DATA SHEET www.onsemi.com Fixed Frequency Current Mode Controller for Flyback Converters NCP1236 The NCP1236 is a new fixed frequency current mode controller featuring Dynamic Self Supply (DSS).
This device is pin to pin compatible with the previous NCP12xx families.
The DSS function greatly simplifies the design of the auxiliary supply and the VCC capacitor by activating the internal startup current source to supply the controller during transients.
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