Datasheet

brown-outs during high current draw because of USB cable resistance.

The PowerBoost 1000C has at the heart a TPS61090 boost converter from

TI (http://adafru.it/duQ). This boost converter chip has some really nice extras such as low

battery detection, 2A internal switch, synchronous conversion, excellent efficiency, and

700KHz high-frequency operation. Check out these specs!

Synchronous operation means you can disconnect the output completely by

connecting the ENable pin to ground. This will completely turn off the output

2A internal switch (~2.5A peak limiting) means you can get 1000mA+ from a 3.7V

LiPoly/LiIon battery. Just make sure your battery can handle it!

Low battery indicator LED lights up red when the voltage dips below 3.2V, optimized

for LiPo/LiIon battery usage

Onboard 1000mA charge-rate 'iOS' data resistors. Solder in the USB connector and

you can plug in any iPad, iPhone or iPod for 1000mA charge rate.

Full breakout for battery in, control pins and power out

90%+ operating efficiency in most cases (see datasheet for efficiency graphs), and

low quiescent current: 5mA when enabled and power LED is on, 20uA when disabled

https://learn.adafruit.com/adafruit-powerboost-1000c-load-share-usb-

charge-boost

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