APPLICATIONS

Offline AC/DC flyback converter for

■ Power Adapter

■ Set-Top Box Power Supplier

■ Open-frame SMPS

FEATURES

■ Power on soft start reducing MOSFET Vds

stress

■ Multi-Mode Operation

CCM @ Heavy Load and Low Line

Quasi-Resonant operation @ Medium Load

Green mode with valley skip @ Light Load

Burst Mode @ No Load

■ Frequency shuffling for EMI

■ Extended burst mode control for improved

efficiency and low standby power design

■ Audio noise free operation

■ Comprehensive protection coverage

o VCC Under Voltage Lockout with

hysteresis (UVLO)

o VCC Over Voltage Protection (VCC OVP)

o Cycle-by-cycle over current threshold

setting for constant output power limiting

over universal input voltage range

o Over Load Protection (OLP) with autorecovery

o External (if NTC resistor is connected at

PRT pin)or internal Over Temperature

Protection (OTP) with latched shut down

o Output Over Voltage Protection(Output

OVP) with latched shut down, and the

OVP triggered voltage can be adjusted by

the resistor connected between auxiliary

winding and PRT pin

o Output diode short protection with autorecovery