AP3965 (Not Recommended for new design)

Description

The AP3965/66/71 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 or non-isolated buck applications

within 5W. Typical applications include adapter for ADSL, auxiliary

supplies or open frame types for appliances.

The AP3965/66/71 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 AP3965/66/71 solution has fewer component numbers, smaller

size, and lower total cost.

Feature(s)

• 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
•  Totally Lead-free & Fully RoHS Compliant
   
• • Halogen and Antimony Free. “Green” Device

Application(s)

• Adapters
• Set Top Boxes
• Auxiliary Supplies
• Appliances