DESCRIPTION
The AP8010 is a high performance AC-DC off‐line
controller for low power battery charger and adapter
applications with Universal‐input. It uses Pulse
Frequency and Width Modulation (PFWM) method
to build discontinuous conduction mode (DCM)
flyback power supplies.
The AP8010 utilizes primary‐side sensing and
regulation technology to provide accurate constant
voltage, constant current (CV/CC) regulation without
requiring an opto‐coupler and secondary control
circuitry. It also eliminates the need of external loop
compensation circuitry while maintaining stability.
The AP8010 achieves excellent regulation and high
average efficiency, yet meets the requirement for
standby power less than 150mW.
The AP8010 ensures safe operation with complete
protection against all fault conditions. Built‐in
protection circuitry is provided for output short
circuit, output over‐voltage, line under‐voltage, VDD
over voltage, feedback open and short, and over
temperature conditions.
Integrated line and primary inductance
compensation circuitry, the AP8010 provides
accurate constant current operation despite wide
variations in line voltage and primary inductance. It
has the built‐in cable voltage drop compensation
function.
The AP8010 is available in SOT-25 package.

FEATURES
 Primary Side Regulation Technology for
Eliminating Opto‐coupler and Secondary CV/CC
Control Circuitry
 Best‐in‐Class Constant Voltage, Constant
Current Accuracy
 Built‐in Soft‐Start Circuit
 Integrated Line and Primary Inductance
Compensation
 Integrated Output Cable Voltage Drop
Compensation
 Line Under‐Voltage, Output Over‐Voltage,
Output Short‐Circuit and Over‐Temperature
Protection
 Minimum External Components
 Low EMI
 Available in SOT-25 Package

APPLICATION
 Chargers for Cell Phones, PDAs, MP3, Portable
Media Players, DSCs, and Other Portable
Devices and Appliances
 RCC Adapter Replacements
 Linear Adapter Replacements
 Standby and Auxiliary Supplies