Device Overview
BQ25120AYFPT is a highly integrated battery-charge management IC for small battery-powered systems. It combines a linear charger, power-path management, a configurable 300-mA buck regulator, and a configurable load switch or 100-mA LDO output. Charger input operation is 3.4 V to 5.5 V, charge current is supported up to 300 mA, and I2C provides control over charge and system parameters.
Confirmed Technical and Ordering Data
| Parameter | Confirmed value | Scope / condition |
|---|---|---|
| Device Function | Highly integrated battery charge management IC | linear charger + power path + buck + load switch/LDO |
| Input Voltage | 3.4 to 5.5 V | operating; charger input |
| Charge Current | up to 300 mA | |
| Buck Output | 1.8 V default; configurable | 300-mA buck regulator |
| Buck Current | 300 mA | |
| Ldo Or Load Switch | Configurable load switch or 100-mA LDO | load switch default |
| Battery Regulation | 3.6 to 4.65 V | 0.5% accuracy; 10-mV steps |
| Quiescent Current | 700 nA | typical; buck enabled, no load |
| Shipping Mode Battery Current | <50 nA | power-path shipping mode |
| Control Interface | I2C | programmable charge/system parameters |
| Package | DSBGA-25 (YFP) | 250-piece SMALL T&R |
| Temperature Range | -40 to 85 °C | exact orderable/package option |
Engineering Selection Guidance
The 3.4-to-5.5-V charger input range must be distinguished from absolute-tolerance statements; it is the operating window used for normal charger design. The 300-mA charge-current ceiling and 300-mA buck capability describe different paths, so neither should be substituted for the other in power budgeting. Battery regulation is configurable from 3.6 V to 4.65 V in 10-mV steps, while the buck defaults to 1.8 V. Check the 100-mA LDO/load-switch option, 700-nA typical no-load buck quiescent current and I2C programmability against the system’s always-on and standby requirements.
Lifecycle and Procurement
Texas Instruments lists BQ25120AYFPT as Active in the current exact-part information. This exact orderable uses the DSBGA-25 (YFP) package with SMALL T&R packing and a package quantity of 250. Lifecycle status does not indicate HKEQGOO stock, lead time, MOQ, or final availability.
