Overview:
OB2311 is a built-in high-voltage MOSFET for switching power supply Current mode PWM controller.
This circuit has low standby power consumption and low starting current. On standby In the mode, the circuit enters the intermittent working mode, thus effectively Reduce the standby power consumption of the circuit.

main feature :
● Internal integrated high voltage MOSFET
● Low starting current (5μ A)
● No need for "Y-CAP" capacitor
● Built-in frequency jitter can reduce EMI
● Overcurrent and overvoltage protection
● Undervoltage lockout and automatic restart
● Internal soft start circuit
● Burst Mode (Burst Mode)
● Cycle-by-cycle current limiting mode

Application:
● Mobile phone charger
● Power adapter

(Google Trans ...)