Adafruit Powerboost 500C
Adafruit Powerboost 500C
SKU: BOB-082 - Mfg Part Number: 1944
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.
- 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
PowerBoost 500C: https://learn.adafruit.com/adafruit-powerboost-500-plus-charger
Only 2 left in stock (can be backordered)
SKU: BOB-082. Categories: Breakout Boards, Regulators, Chargers. Tags: 5V, Adafruit, Breakout, Light Packet, Powerboost.