# Universal USB / DC / solar LiPo charger bq24074

Manufacturer: Adafruit  |  MPN: 4755  |  Category: charger
Canonical: https://partsgraph.ai/catalog/parts/adafruit-bq24074-solar
Image: https://partsgraph.ai/catalog/img/adafruit-bq24074-solar.jpg (photo: Adafruit, CC BY-SA; sha256 0d898ad27bb6)

## Attributes (each with provenance)

- **Charger IC**: bq24074
  - source: https://www.ti.com/lit/ds/symlink/bq24074.pdf (page 1) sha256:05585ca0112a
  - quote: "BQ24072, BQ24073, BQ24074, BQ24075, BQ24079"
- **Max charge current**: 1.5 A
  - source: https://www.ti.com/lit/ds/symlink/bq24074.pdf (page 1) sha256:05585ca0112a
  - quote: "8 – REVISED OCTOBER 2021 BQ2407x Standalone 1-Cell 1.5-A Linear Battery Chargers with Power Path"
- **Input voltage range**: 5 to 10 V
  - source: https://www.adafruit.com/product/4755
  - quote: "Polymer Charger can use USB, DC or Solar power, with a wide 5-10V input voltage range! The charger chip is super smart, and w"
- **Input overvoltage rating**: 28 V
  - source: https://www.ti.com/lit/ds/symlink/bq24074.pdf (page 1) sha256:05585ca0112a
  - quote: "current separately. This feature reduces the number • 28-V Input rating with overvoltage protection"
- **OVP threshold (bq24074)**: 10.5 V
  - source: https://www.ti.com/lit/ds/symlink/bq24074.pdf (page 6) sha256:05585ca0112a
  - quote: "TD BQ24074 10.5 V 4.2 V 4.4 V VO(REG) – 100 mV"
- **Battery regulation voltage**: 4.2 V
  - source: https://www.ti.com/lit/ds/symlink/bq24074.pdf (page 6) sha256:05585ca0112a
  - quote: "FUNCTION BQ24072 6.6 V 4.2 V VBAT + 225 mV VO(REG) – 100 mV"
- **System output regulation (VOUT)**: 4.4 V
  - source: https://www.ti.com/lit/ds/symlink/bq24074.pdf (page 6) sha256:05585ca0112a
  - quote: "D BQ24073 6.6 V 4.2 V 4.4 V VO(REG) – 100 mV TD"
- **Default max charge rate**: 1000 mA
  - source: https://www.adafruit.com/product/4755
  - quote: "Two color indicator LEDs - Power good and Charging Set for 1000mA max charge rate , can be adjusted to 500mA or 1.5A by solde"
- **Solar panel input**: 6 to 10 V
  - source: https://www.adafruit.com/product/4755
  - quote: "ithium Polymer battery charger Charge with 5-10V DC, USB or 6-10V solar panel , can have both USB and DC plugged in at the sa"
- **USB connector**: USB Type C
  - source: https://www.adafruit.com/product/4755
  - quote: "charger this universal charger has some nice improvements: USB Type C port for modern computers and chargers Up to 1.5A charge ra"
- **Battery connector**: JST PH
  - source: https://www.adafruit.com/product/4755
  - quote: "r panel . Plug the battery into the BATT port using a 2-pin JST PH cable and the solar panel into the DC jack using a 2.1mm ad"
- **RoHS**: RoHS compatible
  - source: https://www.ti.com/lit/ds/symlink/bq24074.pdf (page 6) sha256:05585ca0112a
  - quote: "dendum at the end of the data sheet (2) This product is RoHS compatible, including a lead concentration that does not exceed 0.1% o"
- **Lead-free soldering**: yes
  - source: https://www.ti.com/lit/ds/symlink/bq24074.pdf (page 6) sha256:05585ca0112a
  - quote: "roduct weight, and is suitable for use in specified lead-free soldering processes. In addition, this product uses package"

## Vendors

- Adafruit: https://www.adafruit.com/product/4755 (~USD 14.95, indicative as of 2026-08-18)

## Datasheets

- TI bq24074 datasheet: https://www.ti.com/lit/ds/symlink/bq24074.pdf (sha256 05585ca0112a)

Used in builds: weather-station (roles: charger)

Machine feed of the whole catalogue: https://partsgraph.ai/catalog/feed.json