DC507A

DC507A demonstration circuit features the LT1937 constant current white LED driver in a small SC70 package. The demo board consists of two circuits: an efficiency circuit designed to demonstrate high efficiency performance of the LT1937 using the Murata inductor and a size circuit highlighting the LT1937’s ability to work with a small ceramic chip inductor and a small output capacitor (0.22µF). The high efficiency and small circuit size are made possible by a 95mV feedback voltage and 1.2MHz switching frequency, making the LT1937-SC70 an ideal solution for battery powered portable applications such as cellular phones, digital cameras, MP3 players, GPS receivers, and handheld computers (PDAs). The DC507 is specifically designed for white LED backlight applications using 2–4 LEDs in series.

• Offers numerous LED-dimming circuit options