BQ25125

BQ25125 SLUSDL9A – JUNE 2019 – REVISED JANUARY 2021 BQ25125 Low IQ Highly Integrated Battery Charge Management Solution For Wearables and IoT 1 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 from 3.6 V to 4.65 V in 10-mV steps) – Configurable termination current down to 500 µA – Simple voltage based battery monitor – Watchdog timer enabled by default – VDPPM Loop disabled – VINDPM Disabled by default to support low voltage charging Highly integrated solution with small footprint – 2.5 mm x 2.5 mm WCSP Package and 6 external components for minimal solution – Push-button wake-up and reset with adjustable timers – Power path management for powering the system and charging the battery – Power path management enables <50 nA ship mode battery quiescent current for longest shelf life – Battery charger operates from 3.4 V – 5.5 VIN (5.5-V OVP / 20-V tolerant) – Dedicated pins for input current limit, charge current, termination current, and status output I2C Communication control – Charge voltage and current – Termination threshold – Input current limit – VINDPM Threshold – Timer options – Load switch control – Controls for interrupts for faults and status – System output voltage adjustment...