LC5220 series is a non-isolating, simple and efficient LED driver. The high voltage capability allows direct connection to a wide range of supply voltages ranging from 25 to 400 V (recommended). The LC5220 uses constant current mode to drive LEDs. and buck and buck-boost voltage converters can be configured.
A power MOSFET and controll IC are incorporated in one package. Because few external parts are required, the LC5220 is ideal for use in small-size LED light bulbs. Various control requirements can be supported through the REF pin, including peak current control, output on/off, and sleep mode enable.
Moreover, there is a protection circuit for freewheeling diode open, protection for a buck-boost voltage converter open LED load, and a variable overcurrent protection function. These features improve safety for both the LC5220 and the LEDs.