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CAT37电感升压单串LED驱动电路
消耗积分:5 |
格式:rar |
大小:169 |
2010-08-28
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The CAT37 is a DC/DC step up converter that delivers
a regulated output current. Operation at a constant
switching frequency of 1.2MHz allows the device to be
used with very small value external inductor and ceramic
capacitors.
The CAT37 is targeted to drive multiple white lightemitting
diodes (LEDs) connected in series and provides
the necessary regulated current to control the brightness
and the color purity. An external resistor R1 controls the
output current level. LED currents of up to 40mA can
be supported over a wide range of input supply voltages
from 2.5V to 7V, making the device ideal for batterypowered
applications.
a regulated output current. Operation at a constant
switching frequency of 1.2MHz allows the device to be
used with very small value external inductor and ceramic
capacitors.
The CAT37 is targeted to drive multiple white lightemitting
diodes (LEDs) connected in series and provides
the necessary regulated current to control the brightness
and the color purity. An external resistor R1 controls the
output current level. LED currents of up to 40mA can
be supported over a wide range of input supply voltages
from 2.5V to 7V, making the device ideal for batterypowered
applications.
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