General Description
The PN8368 consists of a Low Standby-Power Quasi-Resonant (QR) Primary-Side controller and a avalanche-rugged smart
power VDMOSFET, specifically designed for a high performance AC/DC charger or adaptor with minimal external components.
PN8368 operates in primary-side sensing and regulation, so opto-coupler and TL431 could be eliminated. Because of internal HV
Start-up circuit, the system with PN8368 can achieve less than 30mW standby power consumption (230VAC). In CV mode,
multi-mode and quasi resonant technique is utilized to achieve high efficiency, avoid audible noise and make the system meeting
Energy star class VI. Good load regulation is achieved by the built-in cable drop compensation. In CC mode, the current and
output power setting can be adjusted externally by the sense resistor Rcs at CS pin. PN8368 offers complete protections including
Cycle-by-Cycle current limiting protection (OCP), over voltage protection (OVP), over temperature protection (OTP) and CS
open or short protection (CSO/SP) etc.

Applications
■ Switch AC/DC Adaptor
■ Battery Charger

Features
■ Internal avalanche-rugged smart power VDMOSFET
■ Internal HV Start-up Circuit, Standby power consumption <
30mW at 230VAC
■ Multi-mode and Quasi-Resonant technique achieve high
efficiency, meeting energy star class VI
■ ±5% CC Regulation at Universal AC input
■ Primary-side Sensing and Regulation without TL431 and
Opto-coupler
■ Programmable Cable Drop Compensation
■ No-need Control Loop Compensation Capacitance
■ Excellent Protection Coverage:
Over Temperature Protection (OTP)
VDD Under/Over Voltage Protection(UVLO&OVP)
Cycle-by-Cycle Current Limiting (OCP)
Cs Short/Open Protection (CS O/SP)