AP3969 - (AP3968 - AP3970) Primary Side Power Switcher
BCD
Download the AP3969 datasheet PDF.
This datasheet also covers the AP3968 variant, as both devices belong to the same (ap3968 - ap3970) primary side power switcher family and are provided as variant models within a single manufacturer datasheet.
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.
Full PDF Text Transcription for AP3969 (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
AP3969. 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
AP3969 Datasheet
