AP3983DP7-G1

Diodes Incorporated AP3983x Primary-Side Power Switchers deliver improved conversion efficiency, voltage and current accuracy, and protection functions. These devices utilize a built-in MOSFET to regulate the output voltage and current on the primary side. This is handled by piece-wise Pulse Frequency Modulation (p-PFM) in Discontinuous Conduction Mode (DCM). The system operating frequency reduces linearly from heavy load to light load in each interval of the p-PFM. It enters constant current mode when the load current equals the maximum system output current. These Switchers have built-in fixed cable voltage drop compensation. The AP3983B/C/R are offered in an SO-7 package that delivers output powers up to 10W. The AP3983C/D/E are offered in a PDIP-7 package that delivers output powers up to 20W.Features Accurate Primary Side regulation eliminates the need for optocouplers and 431/CC-CV components Built-in MOSFET reduces solution size650 BVDSS (AP3983B/C/D)700 BVDSS (AP3983E/R) Internal output cable voltage drop compensation Switching Frequency Dithering function improves EMC performance MultiInterval Pulse Frequency Modulation Over Voltage Protection (OVP) Over Temperature Protection (OTP) Short Circuit Protection (SCP) with Hiccup Lead-Free and RoHS CompliantApplications <20W adapters Chargers Set top boxes Standby and auxiliary power supplies Appliances

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