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AP3970S

BCD
Part Number AP3970S
Manufacturer BCD
Description (AP3968 - AP3970) Primary Side Power Switcher
Published Jan 2, 2014
Detailed Description Preliminary Datasheet Primary Side Power Switcher for Off-line SMPS General Description The AP3968/69/70/70S consists of...
Datasheet PDF File AP3970S PDF File

AP3970S
AP3970S

Overview
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.
The AP3969/70/70S is packaged in DIP-7 and DIP-8.
AP3968/69/70/70S 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 Note 1: Typical continuous power in a non-ventilated enclosed adapter measured at 50ºC ambient.
Applications • • • • • • Chargers Adapters Set Top Boxes Auxiliary Supplies DVD LED Driver SOIC-7 DIP-7 DIP-8 Figure 1.
Package Types of AP3968/69/70/70S Dec.
2011 Rev.
1.
4 1 BCD Semiconductor Manufacturing Limited Free Datasheet http://www.
datasheet4u.
com/ Preliminary Datasheet Primary Side Power Switcher for Off-line SMPS Pin Configuration M Package (SOIC-7) P Package (DIP-8) AP3968/69/70/70S CPC FB VCC CS 1 2 3 4 7 GND CPC FB 1 2 3 4 8 7 6 5 GND NC C C 6 5 C C VCC CS For AP3968 For AP3969/70/70S P7 Package (DIP-7) CPC FB VCC CS 1 2 3 4 7 GND 6 5 C C For AP3969/70/70S Figure 2.
Pin Confi...


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