■ Primary-side feedback eliminates optoisolators and

simplifies design

■ Internal 800V bipolar junction transistor (BJT)

■ 64kHz PWM switching frequency

■ No-load power consumption < 100mW at 230VAC with

typical application circuit

■ Adaptive multi-mode PWM/PFM control improves

efficiency

■ Quasi-resonant operation for highest overall efficiency

■ EZ-EMI® design to easily meet global EMI standards

■ Dynamic BJT base drive current control

3 Applications

■ Low-power AC/DC power supply for smart meters,

motor control and industrial applications

■ Linear AC/DC replacement

■ Low-power AC/DC LED driver

■ Very tight constant voltage and constant current

regulation with primary-side-only feedback

■ No external compensation components required

■ Complies with EPA 2.0 energy-efficiency

specifications with ample margin

■ Low start-up current (8μA typical)

■ Built-in soft start

■ Built-in short circuit protection and output overvoltage

protection

■ Built-in current sense resistor short circuit protection

■ No audible noise over entire operating range