Milpitas, Calif.—Linear Technology's LT3466-1, for single cell lithium-ion applications, contains a DC/DC converter for driving up to 10 white light emitting diodes (LEDs) and a separate converter for generating the bias voltages for thin-film-transistor liquid-crystal displays (TFT-LCDs) or driving an OLED display. Each channel has independent dimming and shutdown control.
Schottky diodes are integrated to cut the cost and board space required by external diodes. The LT3466-1's switching frequency can be set (with a single resistor) between 200 kHz and 2 MHz to maximize operating efficiency (which is as high as 83 percent). Both the LED driver and the boost converter have over-voltage protection and internal soft-start.
Full documentation on the LT3466-1 (as apart from the LT3466, a different device) can be secured by clicking here. The chip, in a 3-by-3 mm DFN-10 package, is priced starting at $1.95 each in 1k pieces.
Linear Technology, 1-800-4LINEAR, www.linear.com