The BQ25173 is an integrated 800 mA linear charger designed to charge supercapacitors with 1 to 4 cells, making it ideal for space-constrained applications. It features a unique power output that allows the supercapacitor to be charged, and the system load can be connected in parallel with the supercapacitor, sharing the charging current between them.
General Features:
- Wide Input Voltage Range: Supports up to 40 V, suitable for a variety of power sources.
- Energy Efficiency: Includes an automatic suspend mode that reduces power consumption, with an output leakage current of 350 nA and an input leakage current of 2 µA when charging is disabled.
- Flexible Charging: Enables charging of supercapacitors from 0 V and allows external programming through resistors to adjust the regulation voltage and charge current.
- High Precision: Provides ±1% accuracy on charge voltage and ±10% accuracy on charge current, ensuring reliable and safe charging.Integrated Protections: Features input overvoltage protection (OVP) up to 18 V, overcurrent protection at 1000 mA, thermal regulation at 125°C, and thermal shutdown at 150°C,
- safeguarding both the device and the supercapacitor.
The BQ25173 is a robust and efficient solution for managing supercapacitor charging in applications such as smart meters, barcode scanners, portable medical devices, and dash cameras.
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