General Description
The LD9162K is an excellent primary-side feedback
controller with QR operation, integrated with a 650V
MOSFET switch in a SOP-8 package. It minimizes the
components counts and is ideal for low cost applications.
It provides functions of ultra-low startup current, green-mode
power-saving operation and leading-edge blanking of the
current sensing. Also, the LD9162K includes the
comprehensive protection function, such as Over Load
Protection (OLP), Over Voltage Protection (OVP), and
internal Over Temperature Protection (OTP). Furthermore,
the programmable brown-in/out protection and bulk cap.
OVP protection is built-in.
In most cases, PSR controlled flyback converters would
suffer from bad load regulation performance. To deal with
this problem, dedicated load regulation compensation is also
implemented in LD9162K.

Features
 Primary-Side Feedback Control with Quasi-Resonant
Operation
 Built-in 650V MOSFET Switch
 Built-in Load Regulation Compensation
 Constant Current Control
 Ultra-Low Startup Current (<1.9A)
 80 kHz Maximum Switching Frequency.
 Green Mode Control to enhance Efficiency
 LEB (Leading-Edge Blanking) On CS Pin
 VCC OVP (Over Voltage Protection)
 Adjustable Brown in/out and Bulk_OVP on FB pin.
 Internal OTP (Over Temperature Protection)
 SDSP (Secondary Diode Short Protection)

Applications
 Mobile Phone Charger
 Low Power AC/DC Adaptor