ME8305SG

General Description The ME8305 is a high performance AC/DC power supply controller for battery charger

 and adapter applications. The device uses Pulse Frequency Modulation(PFM) method to build discontinuous

conduction mode (DCM) flyback power supplies. The ME8305 provides accurate constant voltage, constant

current (CV/CC) regulation while removing the opto-coupler and secondary control circuitry. It also

eliminates the need of loop compensation circuitry while maintaining stability. The ME8305 achieves excellent

regulation and high average efficiency, yet meets the requirement for no-load consumption less than 30mW.

Features

 Set-in high-voltage power switch tube of 700V and few peripheral components.

 Primary Side Control for Rectangular Constant Current and Constant Voltage Output

 Sub-microampere Start-up Current

 30mW No-load Input Power Feasible

 Tight CV Regulation Performance

 Eliminates Opto-coupler and Secondary CV/CC Control Circuitry

 Eliminates Control Loop Compensation Circuitry

 Flyback Topology in DCM Operation

 Random Frequency Modulation to Reduce System EMI 

 Built-in Soft Start

 Open Feedback Protection

 Short Circuit Protection

Typical Application

 Adapters/Chargers for Cell/Cordless Phones, PDAs, MP3 and Other Portable Apparatus

 LED Drivers

 Standby and Auxiliary Power Supplies

Package 

 8-pin SOP8