PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A - 1000C

PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A - 1000C info

PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A is the perfect power supply for your portable project. With a built-in load-sharing battery charger circuit, you'll be able to keep your project running even while recharging the battery. This little DC/DC boost converter module can be powered by any 3.7V LiIon/LiPoly battery, and convert the battery output to 5.2V DC for running your 5V projects.

The output of the Powerboost 1000C is tweaked to be 5,2V instead of 5Vto create headroom for long cables, high draw or the addition of a diode on the output. 5,2V is still safe for 5V powered electronics like Arduino, Raspberry Pi or Beagle Bone.

PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A is based on TPS61090 boost converter from TI. 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. These specs are:

• 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. Bu you have to 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.
• 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 (power and low batt LED are off)

To make this even more useful, Adafruit stuck a smart load-sharing Lipoly charger on the other side. The charger circuitry is powered from a microUSB jack, and will recharge any 3.7V/4.2V LiIon or LiPoly battery at 1000mA max rate.

Since the built-in battery charger has load-sharing, it will automatically switch over to the USB power when available, instead of continuously charging/draining the battery. This is more efficient, and lets you charge-and-boost at the same time without any interruption on the output so it is fine for use as a "UPS" (un-interruptable power supply).

Note: Be aware that the charge rate is 1000mA max, and there's some inefficiency during the boosting stage, so make super sure that the USB adapter you're using to charge with is high quality, can supply 2A and has thick power wires.

PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A - 1000C - General Specifications

• Adafruit Powerboost 1000 booster, converter, charger
• 5,2V output voltage
• Built-in load-sharing battery charger
• Can charge any 3,7V/4,2V LiIon, LiPoly battery
• Maximum 1000mA charge rate

PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A - 1000C - Technical Specifications

• Chip: TPS61090
• Dimensions: 23mm x 45mm x 10mm
• Weight: 6g

Videos

Documents

TPS61090 Datasheet: http://www.ti.com/product/tps61090

References

Adafruit Product Page: https://www.adafruit.com/products/2465