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AP3970S - (AP3968 - AP3970) Primary Side Power Switcher

This page provides the datasheet information for the AP3970S, a member of the AP3968 (AP3968 - AP3970) Primary Side Power Switcher family.

Datasheet Summary

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.

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 preview – AP3970S

Datasheet Details

Part number AP3970S
Manufacturer BCD
File Size 566.50 KB
Description (AP3968 - AP3970) Primary Side Power Switcher
Datasheet download datasheet AP3970S Datasheet
Additional preview pages of the AP3970S datasheet.

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Full PDF Text Transcription

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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 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 AP3968 is packaged in SOIC-7.
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