JW®1221A 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 JW1221A ensure minimum power dissipation while removing LED current ripple.
JW1221A allows user to setup maximum LED current, which protects NMOSFET from being damaged when LED short connected or hot-plug.
JW1221A also allows users to setup the maximum cathode voltage of LED string, which could help limit the power dissipation on chip.
JW1221A has multi-protection functions which largely enhance the safety and reliability of the system, including VIN UVLO, short-circuit protection, LED open protection, and over-temperature protection.