-LiPo-Charger-Booster--Compact-Power-Combo

"Tiny 24x34mm PCB combining BQ24075 charger + PAM2401 boost converter. Production-ready design with USB-C input, status LEDs, and JLCPCB-optimized files. Learn from my output contention debugging journey!"

Lithium Battery Charger + 5V Booster Circuit

Compact power management solution featuring:

• TI BQ24075 for lithium charging (USB-C input)
• PAM2401 boost converter (0.9V→5V output)
• 24x34mm footprint with status LEDs

Key Features

✅ Smart Charging

• CC/CV with battery temp monitoring
• 500mA default charge current (adjustable)

✅ Efficient Boosting

• 92% peak efficiency
• 2.2µH inductor optimized for compact size

✅ Production-Ready

• JLCPCB-compatible design
• Includes stencil files

Getting Started

1. Order PCBs: Upload GERBER Files to JLCPCB
2. Online Design Altium 365 design sharing
3. Assembly:
   • Use included pick-and-place file for automated assembly
   • Or hand-solder with reflow/hotplate
4. Testing: Verify 5.1V output before load connection

Design Notes

⚠️ Critical Lesson:
Isolate charger/booster outputs! Early versions had contention issues (see video).

Resources

• Video Tutorial
• BQ24075 Datasheet.
• PAM2401 Datasheet

License

MIT License - Open for personal/commercial use with attribution.