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CAT4139 22V High Current Boost
消耗积分:3 |
格式:rar |
大小:180 |
2010-04-12
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CAT4139 pdf,datasheet
22V High Current Boost White LED Driver
The CAT4139 is a DC/DC step-up converter that delivers an
accurate constant current ideal for driving LEDs. Operation at a fixed
switching frequency of 1 MHz allows the device to be used with small
value external ceramic capacitors and inductor. LEDs connected in
series are driven with a regulated current set by the external resistor
R1. The CAT4139 is ideal for driving parallel strings of up to five
white LEDs in series or up to 22 V.
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