LD5523P controller equivalent, multi-mode pwm controller.
* Secondary-side feedback control with quasi-resonant + peak load mode operation
* Low Startup Current (<1A)
* 0.285mA Ultra-low operating current at light l.
* Switching AC/DC Adaptor
AC input
EMI Filter
DC Output
VCC
OUT
FB LD5523P
COMP
CS
GND
NTC
photocoupler
.
In order to enhance the efficiency performance, the LD5523P integrates the multi-mode PWM controller, which consists of Quasi-Resonant (QR) PWM control for light load condition and peak load mode for heavy load condition. Moreover, the QR controller .
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