태양광/USB/DC 리튬이온/리튬폴리 충전기
(USB / DC / Solar Lithium Ion/Polymer charger - v2)
개요
- 본 제품은 태양광 패널/USB/DC입력을 이용하여 배터리를 충전할 수 있는 제품입니다.
- 3.7V/4.2V 리포배터리를 BATT 포트에 연결하고 6V 태양광 패널을 DC Jack에 2.1mm 전원잭 어댑터를 이용하여 연결하면 충전이 시작됩니다.
- LOAD 포트쪽으로 다른 제품에 전원 공급 또한 가능합니다.
- 전원 안정화를 위한 캐패시터가 포함되어 있습니다.
특징
- 3.7V/4.2V Lithium Ion or Lithium Polymer battery charger
- Charge with 5-6V DC, USB or 6V solar panel!
- Too dark out? Use a USB mini-B cable or a 5V DC adapter
- Automatic charging current tracking for high efficiency use of any wattage solar panel
- Use any 6V solar panel
- Three color indicator LEDs - Power good, Charging and Done
- Low Battery Indicator (fixed at 3.1V) with LED output
- Set for 500mA max charge rate, can be adjusted from 50mA up to 1A by soldering in a resistor
- Will always draw the most current possible from a solar cell - up to the max charge rate!
- Smart load sharing automatically uses the input power when available, to keep battery from constantly charging/discharging
- Temperature monitoring of battery by soldering in a 10K NTC thermistor (not included) - suggested for outdoor projects where the battery may get hot (50°C) or cold (0°C).
- Board Dimensions: 41mm x 33mm x 2mm (1.6" x 1.3" x 0.08")
- Thickness with 2.1mm SMT Barrel Jack: 12.6mm / 0.5"
문서
- Board / Layout & Schematic files on Github
- MCP73871 datasheet
- Board / Layout & Schematic files on Github
- Schematic image on github
- Our detailed tutorial on how to use this charger
- USB, DC & Solar Lipoly Charger
- Our detailed tutorial on how to use this charger includes a design document explaining how it all works.