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LM2758,pdf datasheet (Switched
消耗积分:3 |
格式:rar |
大小:554 |
2009-09-30
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LM2758 is an integrated low-noise, high-current switched capacitor
DC/DC converter with a regulated current sink. The
device is capable of driving loads up to 700 mA from a singlecell
Li-Ion battery. Maximum efficiency is achieved over the
input voltage range by actively selecting the proper gain
based on the LED forward voltage and current requirements.
One external low-power resistor sets the desired current for
Indicator, Torch and Flash modes. To protect the devices and
the flash LED, internal Time-out circuitry turns off the LM2758
in case of a faulty prolonged Flash mode. Internal soft-start
circuitry limits the amount of inrush current during start-up.
LM2758 is offered in National’s tiny 12-bump thin micro SMD
package.
DC/DC converter with a regulated current sink. The
device is capable of driving loads up to 700 mA from a singlecell
Li-Ion battery. Maximum efficiency is achieved over the
input voltage range by actively selecting the proper gain
based on the LED forward voltage and current requirements.
One external low-power resistor sets the desired current for
Indicator, Torch and Flash modes. To protect the devices and
the flash LED, internal Time-out circuitry turns off the LM2758
in case of a faulty prolonged Flash mode. Internal soft-start
circuitry limits the amount of inrush current during start-up.
LM2758 is offered in National’s tiny 12-bump thin micro SMD
package.
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