JW1221

Parameters Subject to Change Without Notice JW1221 Controller for Adaptive 100/120Hz Current Ripple Removing Circuit FEATURES Controller for adaptive 100/120Hz current ripple remover Built-in zener diode for input voltage clamping VG output voltage high to 10V Programmable amplitude of LED current ripple Programmable maximum cathode voltage of LED Programmable maximum LED current Short protection Over temperature protection SOT23-6L Package APPLICATIONS LED lighting DESCRIPTION JW1221 is a controller for driving external NMOSFET to remove the 100/120Hz LED current ripple on AC/DC power by a capacitor between VC and GND. The adaptive technology of JW1221 ensures minimum power dissipation on NMOSFET while TYPICAL APPLICATION removing LED current ripple. JW1221 clamps the input voltage on VIN pin by 30V. Only one resistor is needed when the output voltage of AC/DC power is higher than 31V. JW1221 allows user to setup maximum LED current by the sensing resistor between the source of NMO...