Texas Instruments BQ25040 Li-Ion Battery Charger
The new bq25040, from Texas Instruments Incorporated (TI), is an integrated Li-ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC adapter and charges a single cell Li-Ion battery with up to 1.1A of charge current. The bq25040 measures 2 mm x 3 mm and can regulate voltage within one-percent accuracy from a USB port or AC adapter. The device’s integrated LDO allows a mobile application to power up instantly from an external power source, even with an empty or absent battery. The bq25040 is available now in a 10-pin, QFN package and is priced at $1.20 in quantities of 1,000.
TI bq25040 Battery Charger Features
- 30V Input Rating, with Overvoltage Protection (OVP)
- Up to 1.1-A Charge Rate
- 50mA Integrated Low Dropout Linear Regulator (LDO)
- 4.2V at 2.3A Production Test Mode
- Single-Input Interface Selects USB 100mA, 500mA or User-Programmable Maximum Input Current Limit
- Input Voltage Dynamic Power Management
- 1% Charge Voltage Regulation Accuracy
- 10% Charge Current Accuracy
- Thermal Regulation and Thermal Shutdown Protection for Output Current Control
- Soft-Start Feature to Reduce Inrush Current
- Status Indication – Power Good and Charging/Done
- Available in Small 2mm × 3mm DFN-10 Package
More info: Cavium Networks OCTEON II Internet Application Processors (pdf)
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