Datasheet for the TOP247F, a part in Power Integrations' TOPSwitch family of integrated off-line switching regulators combining a high-voltage MOSFET with a PWM controller, provided as a 1.78 MB PDF. It is useful when repairing switching power supplies, monitor PSUs and adapters: it gives the pinout, the role of each pin, typical application circuits and electrical limits. Use it to confirm proper pin voltages, identify failed surrounding parts and choose a correct replacement for a blown regulator.
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