Texas Instruments BQ24171
The bq24171 device is highly integrated stand-alone Li-ion and Li-polymer switched-mode battery charger with two integrated N-channel power MOSFETs. The device offers a constant-frequency synchronous PWM controller with high-accuracy regulation of input current, charge current, and voltage. The bq24171 closely monitors the battery pack temperature and allows charge only in a JEITA profile-compatible window with a lower charge rate at a low temperature and a lower charge voltage at a high temperature.| Part No. | BQ24171 |
|---|---|
| Datasheet | BQ24171 Download |
| Manufacturer |  Texas Instruments |
| Description | Li-Ion/Li-Polymer Battery Charger |
| Buy | Stock & Price |
FEATURES
●1 JEITA-Compatible Battery Temperature Sensing● 1.6-MHz Synchronous Switched-Mode Charger With 4-A Integrated N-MOSFETs
● Up to 94% Efficiency
● 30-V Input Rating With Adjustable Overvoltage Protection – 4.5-V to 17-V Input Operating Voltage
● Battery Charge Voltage – Adjustable Charge Voltage up to 3-Series Cells
● High Integration – Automatic Power Path Selector Between Adapter and Battery – Dynamic Power Management – Integrated 20-V Switching MOSFETs – Integrated Bootstrap Diode – Internal Loop Compensation – Internal Digital Soft Start
● Safety – Thermal Regulation Loop Throttles Back Current to Limit TJ = 120°C – Thermal Shutdown – Battery Thermistor Sense Hot/Cold Charge Suspend and Battery Detect – Input Overvoltage Protection With Programmable Threshold – Cycle-by-Cycle Current Limit
● Accuracy – ±0.5% Charge Voltage Regulation – ±4% Charge Current Regulation – ±4% Input Current Regulation
● Less Than 15-μA Battery Current With Adapter Removed
● Less Than 1.5-mA Inpu...
