JW®1221 is a controller for removing the 100/120Hz LED current ripple of AC/DC power supply.
Specially designed algorithms support the good compatibility for dimming and electronic load applications. The adaptive technics of JW1221 ensure minimum power dissipation while removing LED current ripple.
JW1221 allows user to setup maximum LED current, which protects NMOSFET from being damaged when LED short connected or hot-plug.
JW1221 also allows users to setup the maximum cathode voltage of LED string, which could help limit the power dissipation on chip.
JW1221 has multi-protection functions which largely enhance the safety and reliability of the system, includingVIN UVLO, short-circuit protection, LED open protection, and over-temperature protection.