# ATtiny85 Phone Charge Guard ## Description The ATtiny45/85 USB Phone Charge Guard regulates charging by monitoring voltage, current, power, and energy, protecting Li-ion batteries. ## Project Details - **Owner:** vasyl - **Created:** 3/14/2023 - **Last Updated:** 3/14/2023 - **Visibility:** Public - **Stars:** 7 - **Forks:** 7 - **Copies:** 5 ## Key Components ### IC1 — [INA219AIDCNR](https://www.flux.ai/vasyl/ina219aidcnr~6if.md) - Manufacturer Part Number: INA219AIDCNR - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fina219 **Pins:** - A0 [pin 7] - A1 [pin 8] - GND [pin 3] - SCL [pin 5] - SDA [pin 6] - VIN- [pin 2] - VIN+ [pin 1] - VS [pin 4] ### J1 — [1-292303-6](https://www.flux.ai/vasyl/1-292303-6~kd2.md) - Manufacturer Part Number: 1-292303-6 - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=292303&DocType=Customer+Drawing&DocLang=English - Part Type: Connector - Manufacturer Name: TE Connectivity AMP Connectors **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J2 — [1734028-1](https://www.flux.ai/vasyl/1734028-1~nn9.md) - Manufacturer Part Number: 1734028-1 - Part Type: Connector - Manufacturer Name: TE Connectivity AMP Connectors - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1734028&DocType=Customer+Drawing&DocLang=English **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### OLED1 — [OLED 0.91" 128x32 I2C](https://www.flux.ai/vasy_skral/oled-091-128x32-i2c~kl.md) - Part Type: Display Device **Pins:** - 5V [pin 3] - GND [pin 4] - SCL [pin 2] - SDA [pin 1] ### Q1 — [MMBT3904](https://www.flux.ai/vasy_skral/mmbt3904~tsj.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/NextGen%20Components%20PDFs/MMBT3904.pdf - Part Type: Transistor - Manufacturer Part Number: MMBT3904 - Manufacturer Name: MDD **Pins:** - B - C - E ### Q2 — [IRLML2246TRPBF](https://www.flux.ai/jecstronic/irlml2246trpbf~zan.md) - Datasheet URL: https://www.infineon.com/dgdl/irlml2246pbf.pdf?fileId=5546d462533600a401535664c91f25f2 - Manufacturer Name: Infineon Technologies - Part Type: Transistor - Manufacturer Part Number: IRLML2246TRPBF **Pins:** - D - G - S ### SW1 — [TS24CA](https://www.flux.ai/vasy_skral/ts24ca~ma.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_SHOU-HAN-TS24CA_C393942.pdf - Manufacturer Part Number: TS24CA - Manufacturer Name: SHOU HAN - Part Type: Switch **Pins:** - P1 [pin 1] - P2 [pin 2] ### SW2 — [TS24CA](https://www.flux.ai/vasy_skral/ts24ca~ma.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_SHOU-HAN-TS24CA_C393942.pdf - Manufacturer Part Number: TS24CA - Manufacturer Name: SHOU HAN - Part Type: Switch **Pins:** - P1 [pin 1] - P2 [pin 2] ### SW3 — [TS24CA](https://www.flux.ai/vasy_skral/ts24ca~ma.md) - Manufacturer Part Number: TS24CA - Manufacturer Name: SHOU HAN - Part Type: Switch - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_SHOU-HAN-TS24CA_C393942.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] ### SW4 — [TS24CA](https://www.flux.ai/vasy_skral/ts24ca~ma.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_SHOU-HAN-TS24CA_C393942.pdf - Manufacturer Part Number: TS24CA - Manufacturer Name: SHOU HAN - Part Type: Switch **Pins:** - P1 [pin 1] - P2 [pin 2] ### SW5 — [TS24CA](https://www.flux.ai/vasy_skral/ts24ca~ma.md) - Part Type: Switch - Manufacturer Name: SHOU HAN - Manufacturer Part Number: TS24CA - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_SHOU-HAN-TS24CA_C393942.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — [ATTINY85-20SU](https://www.flux.ai/adrian95/attiny85-20su~t3s.md) - Manufacturer Name: Microchip - Part Type: Microcontroller - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2586-AVR-8-bit-Microcontroller-ATtiny25-ATtiny45-ATtiny85_Datasheet-Summary.pdf - Manufacturer Part Number: ATTINY85-20SU **Pins:** - ~RESET~/PB5 [pin 1] - AREF/PB0 [pin 5] - GND [pin 4] - PB1 [pin 6] - PB2 [pin 7] - VCC [pin 8] - XTAL1/PB3 [pin 2] - XTAL2/PB4 [pin 3] ### U2 — [HT7533-1(H)](https://www.flux.ai/adrian95/ht7533-1h~bym.md) - Part Type: Integrated Circuit - Manufacturer Name: HX(hengjiaxing) - Datasheet URL: https://datasheet.lcsc.com/lcsc/2204081330_HX-hengjiaxing-HT7533-1-H_C2984953.pdf - Manufacturer Part Number: HT7533-1(H) **Pins:** - GND [pin 1] - VI [pin 3] - VO [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasyl/attiny85-phone-charge-guard~459](https://www.flux.ai/vasyl/attiny85-phone-charge-guard~459).* --- *Generated from [https://www.flux.ai/vasyl/attiny85-phone-charge-guard~459](https://www.flux.ai/vasyl/attiny85-phone-charge-guard~459)*