dc/dc converter
LT3592: 36V 2.2MHz Buck LED Driver Powers 500mA LEDs from a 2mm x 3mm DFN
Submitted by Ionela on Wed, 06/18/2008 - 07:25.
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Linear Technology announces the LT3592, a 36V step-down DC/DC converter designed to operate as a constant current LED driver. Its internal 36V, 900mA switch enables it to drive up to six 500mA white LED in a single string from a 36V input for industrial and LED signage applications. It can also drive two 500mA LEDs from a 12V lead acid battery input for automotive applications. Series connection of the LEDs provides identical LED currents, resulting in uniform brightness and eliminating the need for ballast resistors. The LT3592%u2019s switching frequency can be adjusted from 400kHz to 2.2MHz via a single resistor. |
