Drivers cover range of dimmable-LED lights, form factors

摘要

Marking what looks like the first introduction of a National Semiconductor part under the new Texas Instruments banner, Tl has announced two new LED drivers-one with a National Semi heritage and one from Tl. The two parts roughly sort themselves out into two power categories: The National-developed LM3448 targets 2 to 8W, dimmable-LED-lighting drivers, and the TI TPS92070 suits 6 to 20W, dimmable-LED-lighting drivers. Both products feature thermal shutdown, power-supply undervoltage lockout, cycle-by-cycle peak-current limit, and LED open protection. The adaptive, constant-off- time, ac/dc, constant-current LM3448 LED regulator inte-grates a 600V MOSFET that tar-gets integrated-LED-lamp form factors that require low-com-ponent-count, high-perform-ance dimmable-LED drivers.