BQ24090是TI公司的一款电池充电器IC产品，BQ24090是具有 10kΩ NTC 的 1 A 单输入单节锂离子电池充电器 | 锂离子线性电池充电器 IC，本页介绍了BQ24090的产品说明、应用、特性等，并给出了与BQ24090相关的TI元器件型号供参考。
BQ24090 - 具有 10kΩ NTC 的 1 A 单输入单节锂离子电池充电器 | 锂离子线性电池充电器 IC - 电池充电器IC - 电池管理产品 - TI公司（Texas Instruments，德州仪器）
- Charging
- 1% Charge Voltage Accuracy
- 10% Charge Current Accuracy
- Pin Selectable USB 100-mA and 500-mA Maximum Input Current Limit
- Programmable Termination and Precharge Threshold
- Protection
- 6.6 V Over-Voltage Protection
- Input Voltage Dynamic Power Management
- 125°C Thermal Regulation; 150°C Thermal Shutdown Protection
- OUT Short-Circuit Protection and ISET Short Detection
- Operation Over JEITA Range via Battery NTC – ½ Fast-Charge-Current at Cold, 4.06V at Hot, bq24092/3
- Fixed 10-Hour Safety Timer
- System
- Automatic Termination and Timer Disable Mode (TTDM) for Absent Battery Pack With Thermistor
- Status Indication – Charging/Done
- Available in Small 10-Pin MSOP Package
- Smart Phones
- PDAs
- MP3 Players
- Low-Power Handheld Devices
The bq2409x series of devices are highly integrated Li-ion and Li-Pol linear chargers devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.
The bq2409x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10-hour safety timer.
The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| bq2409x | HVSSOP (10) | 3.00 mm x 3.00 mm |
