BQ25125 Overview
The BQ25125 is a highly integrated battery charge management IC that integrates the most mon functions for wearable devices: Linear charger, regulated output, load switch, manual reset with timer, and battery voltage monitor. The integrated buck converter is a high efficiency, low IQ switcher using DCS-Control™ that extends light load efficiency down to 10-µA load currents.
BQ25125 Key Features
- Increases system operation time between charges
- Configurable 300-mA buck regulator (1.8 V default)
- 700-nA (typical) Iq with buck converter enabled (No Load)
- Configurable load switch or 100-mA LDO output (1.8 V default)
- Up to 300-mA charge current for fast charging
- 0.5% Accurate battery voltage regulation
- Configurable termination current down to 500 µA
- Simple voltage based battery monitor
- Watchdog timer enabled by default
- VDPPM Loop disabled