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AP3968 - (AP3968 - AP3970) Primary Side Power Switcher

General Description

The AP3968/69/70/70S consists of a primary side regulation controller and a high voltage transistor, and is specially designed for off-line power supplies within 12W output power.

Typical applications include adapter for ADSL and auxiliary supplies.

Key Features

  • Primary Side Control for Eliminating Opto-coupler and Secondary CV/CC Control Circuitry Built-in NPN Transistor with 700VCBO Low Start-up Current: 0.2µA (Typ. ) Internal Output Cable Voltage Drop Compensation Random Frequency Modulation for Low EMI Short Circuit Protection Low Total Cost Solution Output Power Range (Note 1): AP3968 for 5W Adapter AP3969 for 7.5W Adapter AP3970 for 12W Adapter AP3970S for 10W Adapter.

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Datasheet Details

Part number AP3968
Manufacturer BCD
File Size 566.50 KB
Description (AP3968 - AP3970) Primary Side Power Switcher
Datasheet download datasheet AP3968 Datasheet

Full PDF Text Transcription for AP3968 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for AP3968. For precise diagrams, and layout, please refer to the original PDF.

Preliminary Datasheet Primary Side Power Switcher for Off-line SMPS General Description The AP3968/69/70/70S consists of a primary side regulation controller and a high v...

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9/70/70S consists of a primary side regulation controller and a high voltage transistor, and is specially designed for off-line power supplies within 12W output power. Typical applications include adapter for ADSL and auxiliary supplies. The AP3968/69/70/70S operates at pulse frequency modulation (PFM), and provides accurate constant voltage, constant current (CV/CC) regulation without requiring an opto-coupler and secondary control circuitry. It has internal cable compensation function for tight constant voltage regulation. The AP3968/69/70/70S solution has fewer component numbers, smaller size, and lower total cost. The