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== Broches de contrôle ==
 
== Broches de contrôle ==
There's two 'control' pins.
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Il y a deux broches de 'contrôle'.
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* '''EN''': this is the 'enable' pin. By default it is pulled 'high' to '''VBAT'''. To turn off the booster, connect this pin to ground. The switch can be as small as you like, it is just a signal. Contrast this to an inline power switch which would have to be able to handle up to 2A of current! When the chip is disabled the output is completely disconnected from the input.
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* '''EN''': C'est la broche 'enable' (actif). Par défaut, cette broche est placée au niveau HAUT (vers '''VBAT''') à l'aide d'une résistance Pull-Up . To turn off the booster, connect this pin to ground. The switch can be as small as you like, it is just a signal. Contrast this to an inline power switch which would have to be able to handle up to 2A of current! When the chip is disabled the output is completely disconnected from the input.
 
* '''LBO''': not a leveraged buy out! this is the '''Low Battery Output'''. By default it is pulled high to '''BAT''' but when the charger detects a low voltage (under 3.2V) the pin will drop down to 0V. You can use this to signal when its time to shut down or alert the user that the battery is low. There is also a red LED connected to this pin.
 
* '''LBO''': not a leveraged buy out! this is the '''Low Battery Output'''. By default it is pulled high to '''BAT''' but when the charger detects a low voltage (under 3.2V) the pin will drop down to 0V. You can use this to signal when its time to shut down or alert the user that the battery is low. There is also a red LED connected to this pin.
  
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