ای سی تغذیه 14 وات،آفلاین سوئیچر Self-Supplied Monolithic Switcher for Low StandbyPower Offline SMPS Switching Controllers Low Standby Power Monolithic Switcher

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The NCP101X series integrates a fixed-frequency current-mode
controller and a 700 V MOSFET. Housed in a PDIP-7,
PDIP-7 Gull Wing, or SOT-223 package, the NCP101X offers
everything needed to build a rugged and low-cost power supply,
including soft-start, frequency jittering, short-circuit protection,
skip-cycle, a maximum peak current setpoint and a Dynamic
Self-Supply (no need for an auxiliary winding).
Unlike other monolithic solutions, the NCP101X is quiet by nature:
during nominal load operation, the part switches at one of the available
frequencies (65 - 100 - 130 kHz). 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 efficiency at light loads. Because this occurs at typically 1/4
of the maximum peak value, no acoustic noise takes place. As a result,
standby power is reduced to the minimum without acoustic noise
generation.

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