LM3444MM

The LM3444MM is an adaptive constant off-time AC/DC buck (step-down)constant current controller that provides a constant current for illuminating high power LEDs. It is available in a low profile MSOP-10 package.

The features of LM3444MM can be summarized as:(1)Application voltage range 80VAC 277VAC; (2)Capable of controlling LED currents greater than 1A; (3)Adjustable switching frequency; (4)Low quiescent current; (5)Adaptive programmable off-time allows for constant ripple current; (6)Thermal shutdown; (7)No 120Hz flicker; (8)Low profile 10 pin MSOP package; (9)Patent pending drive architecture.

The absolute maximum ratings of LM3444MM are:(1)VCC and GATE to GND:-0.3V to +14V; (2)ISNS to GND:-0.3V to +2.5V; (3)FILTER and COFF to GND:-0.3V to +7.0V; (4)COFF Input Current:60mA; (5)Continuous Power Dissipation:Internally Limited; (6)HBM:2 kV; (7)Junction Temperature (TJ-MAX):150°C; (8)Storage Temperature Range:-65°C to +150°C; (9)Maximum Lead Temp.Range (Soldering):260°C.

If you want to know more information such as the electrical characteristics about the LM3444MM, please download the datasheet in www.seekic.com or www.chinaicmart.com .