D3538P is a high performance offline PSR power switch
for low power AC/DC charger and adapter applications. It
operates in primary-side sensing and regulation. Thus, opto-coupler and TL431 are not required. In CC control,
the output current and power setting can be adjusted
externally by the sense resistor RCS at CS PIN. In CV
control, multi-mode operations are utilized to achieve high
performance and high efficiency. In addition, good load
regulation is achieved by the built-in cable drop
compensation. D3538P operates in PFM in CC mode, and
it operates in PWM+PFM in CV mode with frequency
reduction at light/medium load. The chip consumes very
low operation current. It achieves less than 75mW
standby power to meet strict standby power standard. D3538P offers comprehensive protection coverage with
auto-recovery feature including Cycle-by-Cycle current
limiting, VDD over voltage protection (OVP), feedback
loop open protection, load short circuit protection, under
voltage lockout (UVLO), OTP etc. D3538P is offered in DIP8 packages