- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：电池管理 IC - 电池充电器 IC
- 功能描述：具有 AC/USB 自动检测功能的单节 1A 锂离子电池充电器，Rntc=100k
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The BQ2405x 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 BQ2405x 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.
The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The precharge current and termination current threshold are programmed through an external resistor. The fast charge current value is also programmable through an external resistor.
- 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
- 30-V Input Rating; With 6.6-V input overvoltage 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 through battery NTC - ? fast-charge-current at cold, 4.06 V at hot
- Fixed 10-hour safety timer
- System
- Auto input source detection (D+, D– pins)
- No device transceiver required
- USB Friendly
- Automatic termination and timer disable mode (TTDM) for absent battery pack with thermistor
- Status indication – charging/done
- Available in small 2-mm × 2-mm package
- Auto input source detection (D+, D– pins)
- Number of series cells
- 1
- Charge current (Max) (A)
- 1
- Operating Vin (Max) (V)
- 6.45
- Cell chemistry
- Li-Ion/Li-Polymer
- Battery charge voltage (Min) (V)
- 4.2
- Battery charge voltage (Max) (V)
- 4.2
- Absolute Vin (safety rating) (Max) ((V))
- 30
- Control interface
- Standalone (RC-Settable)
- Features
- BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, USB D+/D-/BC1.2 integrated, VINDPM (Input voltage threshold to maximize adaptor power)
- Operating Vin (Min) (V)
- 3.5
- Rating
- Catalog
BQ24052的完整型号有：BQ24052DSQR、BQ24052DSQT，以下是这些产品的关键参数及官网采购报价：
BQ24052DSQR，工作温度：0 to 125，封装：WSON (DSQ)-10，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网BQ24052DSQR的批量USD价格：.541（1000+）
BQ24052DSQT，工作温度：0 to 125，封装：WSON (DSQ)-10，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网BQ24052DSQT的批量USD价格：.649（1000+）
BQ24052DSQR，工作温度：0 to 125，封装：WSON (DSQ)-10，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网BQ24052DSQR的批量USD价格：.541（1000+）
BQ24052DSQT，工作温度：0 to 125，封装：WSON (DSQ)-10，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网BQ24052DSQT的批量USD价格：.649（1000+）
