Adafruit Powerboost 500C

$21.95

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SKU: BOB-082 Manufacturer: Adafruit Industries Mfg Part Number: 1944 Categories: , , Tags: , , , ,

Description

PowerBoost 500C is perfect for creating a power solution for your portable project! With a built-in load-sharing battery charger circuit, you’ll be able to keep your power-hungry 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 has been tweaked 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.

To make this even more useful, there is 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 500mA max rate. There’s two LEDs for monitoring the charge rate, a yellow one tells you its working, a green one lights up when it’s done.

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 its fine for use as a “UPS” (un-interruptable power supply). 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 dis-charge rate.


Features

  • 700KHz high-frequency operation
  • Full breakout for battery in, control pins and power out
  • Draw 500mA+ from a 3.7V LiPoly/LiIon battery
  • Low battery indicator
  • 90%+ operating efficiency in most cases
  • Onboard 500mA charge-rate ‘iOS’ data resistors


Resources


  Difficulty Level

Soldering Skill: Beginner
Prototyping Skill: Beginner
Programming Skill: N/A

  Product Certifications

  Product Attributes

Weight: 7 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery. Item must be unopened, unused, and in re-saleable condition.

 
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