BQ25622
Description
The BQ25620 and BQ25622 are highly-integrated 3.5A switch-mode battery charge management and system power path management devices for single cell Li-Ion and Li-polymer batteries. The solution is highly integrated with built-in current sensing, loop pensation, input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), lowside switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery.
Key Features
- Supports USB On-The-Go (OTG) – Boost mode supporting 3.84V to 9.6V output – >90% boost efficiency down to 100mA OTG current for 5V VBUS
- Efficient battery operation with 15mΩ BATFET
- Narrow VDC (NVDC) power path management – System instant-on with depleted or no battery – Battery supplement when adapter is fully loaded
- Flexible autonomous or I2C-controlled modes
- Integrated 12-bit ADC for voltage, current, temperature monitoring
- High accuracy – ±0.5% charge voltage regulation – ±5% charge current regulation – ±5% input current regulation
- Safety-Related Certifications: – IEC 62368-1 CB Certification
