Texas InstrumentsUnited States
The BQ25731 is a synchronous buck-boost battery charge controller to charge a 1- to 5-cell battery from a wide range of input sources including USB adapter, high voltage USB-C Power Delivery (PD) sources, and traditional adapters. It offers a low component count, high efficiency solution for space constrained, 1- to 5-cell battery charging applications. During power up, the charger sets the converter to a buck, boost, or buck-boost configuration based on the input source and battery conditions. The charger seamlessly transits between the buck, boost, and buck-boost operation modes without host control.
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View full reportTechnical parameters
| Power | |
|---|---|
| Battery charge voltage (max) (V) | 23 |
| Battery charge voltage (min) (V) | 1.024 |
| Charge current (max) (A) | 16.2 |
| Environment and package | |
| Operating temperature range (°C) | -40 to 85 |
| Other | |
| Absolute max Vin (max) (V) | 32 |
| Cell chemistry | Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH, SuperCap |
| Control interface | I2C |
| Control topology | Switch-Mode Buck-boost |
| Features | IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, USB C/PD compatible, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) |
| Number of series cells | 1, 2, 3, 4, 5 |
| Rating | Catalog |
| Vin (max) (V) | 26 |
| Vin (min) (V) | 3.5 |