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Adafruit PowerBoost 500 Charger Rechargeable 5V Lipo USB Boost @500mA

  • $24.50AUD
  • Save $6.50AUD


Adafruit PowerBoost 500 Charger Rechargeable 5V Lipo USB Boost @500mA

PowerBoost 500C is the perfect power supply for your portable project! With a built-in 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.

If you need a 1A battery charger, smart load-sharing, or 1A iOS resistors, check out the Powerboost 1000C.

Adafruit tweaked the output to be 5.2V instead of a straight-up 5.0V so that there's a little bit of 'headroom' for long cables, high draw, the addition of a diode on the output if you wish, etc. The 5.2V is safe for all 5V-powered electronics like Arduino, Raspberry Pi, or Beagle Bone while preventing icky brown-outs during high current draw because of USB cable resistance.

 

The PowerBoost 500C has at the heart a 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. Check out these specs!

  • The 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 500mA+ from a 3.7V LiPoly/LiIon battery. We had no problem drawing 1000mA, just make sure your battery can handle it!
  • Low battery indicator LED lights up red when the voltage dips below 3.2V, optimised for LiPo/LiIon battery usage
  • Onboard 500mA charge-rate 'iOS' data resistors. Solder in the USB connector and you can plug in any iPhone or iPod for 500mA charge rate. Not suggested for large iPads.
  • 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 (power and low batt LED are off)

To make this even more useful, we stuck a MicroLipo 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 500mA max rate. They're two LEDs for monitoring the charge rate, a yellow one tells you it's working, a green one lights up when it's done. You can charge and boost at the same time no problem, without any interruption on the output so it's fine for use as a "UPS" (uninterruptable power supply) for a low-current draw device. Just be aware that the charge rate is 500mA max, so if you're drawing more than ~300mA continuously from the 5V output side, the battery will slowly drain since the charge rate is less than the discharge rate.

Great for powering your robot, Arduino project, single-board-computer such as Raspberry Pi or BeagleBone! Each order comes with one fully assembled and tested PCB and a loose USB A jack. If you are powering your project from USB, solder the USB A jack in (a 3-minute soldering task).

If you're trying to figure out how much current your project is using, check out the CHARGER DOCTOR!

Technical Details

  • Dimensions: 22mm x 37mm x 2mm / 0.9" x 1.5" x 0.08"
  • Height w/ JST: 7mm / 0.3"
  • Weight: 4g
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