General Description
The LD7513A is an excellent primary side feedback BJT controller with CV/CC operation, integrated with several functions of protections. It minimizes the component counts and is available in a tiny SOT-26 package. Those make it an ideal design for low cost applications.

FEATUREs
● Primary-Side Feedback Control with Quasi-Resonant
   Operation
● Direct Drive of BJT Switch
● Constant Voltage within ±5%
● Built-In Adjustable Load Regulation Compensation
● Constant Current Control
● Ultra-Low Startup Current (<1.9μA)
● 0.5mA Low Operating Current at Light Load
● 75 kHz Maximum Switching Frequency.
● Current Mode Control
● Green Mode Control Improve Efficiency
● LEB (Leading-Edge Blanking) on CS Pin
● Built-in Soft Start
● VCC OVP (Over Voltage Protection)
● FB Pin Open/Short Protection
● Internal OTP (Over Temperature Protection)

APPLICATIONs
● Mobile Phone Adapter
● Lower Power AC/DC Adapter