MOS/BJT Combo : Primary Side Regulator Controller(MOS Combo)

LD9162C

General Description
Primary Side Quasi-Resonant Controller with CV/CC Operation and MOSFET Integrated

The LD9162C is an excellent primary side feedback controller with CV/CC operation, integrated several functions of protections. It minimizes the components counts and is available in a tiny SOP-8 package. Those make it an ideal design for low cost applications.
It provides functions of low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal slope compensation. Also, the LD9162C features OTP (Over Temperature Protection) and OVP (Over Voltage Protection) to prevent the circuit being damaged from the abnormal conditions.
In most cases, the power supply with primary-side feedback controller would accompany with some serious load regulation effect. To deal with this problem, the LD9162C consists of dedicated load regulation compensation circuit to improve it.
 
 
Features
  • Primary-side feedback control with quasi-resonant operation
  • Built-in 650V/2A MOS Switch
  • Built-in Load Regulation Compensation
  • Constant current control
  • Low Startup Current (<1.5μA)
  • 75 kHz Maximum Switching Frequency.
  • Current Mode Control with Cycle-by-Cycle Current Limit
  • Green Mode Control
  • 16V/6.5V UVLO (Under Voltage Lockout)
  • LEB (Leading-Edge Blanking) on CS Pin 
  • VCC OVP (Over Voltage Protection) 
  • Internal OTP (Over Temperature Protection)
 
Application
  • USB Charger
  • Lower Power AC/DC Adaptor