- 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：支持 USB 且具有 5V 至 28V 输入的独立 1 至 6 节降压电池充电控制器
- 点击这里打开及下载BQ24618的技术文档资料
- TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格
The bq24618 device is highly integrated Li-ion or Li-polymer switched-mode battery-charge controller. The bq24618 offers a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, adapter current regulation and charge status monitoring.
The bq24618 operates from either a USB port or AC adapter and supports charge currents up to 10 A. The device charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup for charge termination. The bq24618 automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage.
- USB-Friendly 4.7-V to 28-V Input Operating Range
- Stand-Alone Charge Controller to Support 1 to 6 Li-Ion or Li-Polymer Battery Cells
- Up to 10-A Charge Current and Adapter Current
- 600-kHz NMOS-NMOS Synchronous Buck Converter
- High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Adapter Current Accuracy
- Integration
- Automatic System Power Selection From Adapter or Battery
- Internal Loop Compensation
- Internal Soft Start
- Dynamic Power Management
- Safety Protection
- Input Overvoltage Protection
- Battery Thermistor Sense Hot/Cold Charge Suspend
- Battery Detection
- Reverse-Protection Input FET
- Programmable Safety Timer
- Charge Overcurrent Protection
- Battery Short Protection
- Battery Overvoltage Protection
- Thermal Shutdown
- Status Outputs
- Adapter Present
- Charger Operation Status
- Charge Enable Pin
- 6-V Gate Drive for Synchronous Buck Converter
- 30-ns Driver Dead-Time and 99.5% Maximum Effective Duty Cycle
- Energy Star Low Quiescent Current Iq
- < 15-μA Off-State Battery Discharge Current
- < 1.5-mA Off-State Input Quiescent Current
- APPLICATIONS
- Tablet PCs
- Smart Phones
- Portable Media Players, Navigation Devices, Notebooks and Ultra-Mobile PCs
- Personal Digital Assistants
- Handheld Terminals
- Industrial and Medical Equipment
All other trademarks are the property of their respective owners
- Number of series cells
- 1, 2, 3, 4, 5, 6
- Charge current (Max) (A)
- 10
- Operating Vin (Max) (V)
- 28
- Cell chemistry
- Li-Ion/Li-Polymer
- Battery charge voltage (Min) (V)
- 2.1
- Battery charge voltage (Max) (V)
- 26
- Absolute Vin (safety rating) (Max) ((V))
- 33
- Control interface
- Standalone (RC-Settable)
- Features
- BAT temp thermistor monitoring (hot/cold profile), IINDPM (Input current limit), Power Path
- Operating Vin (Min) (V)
- 4.7
- Rating
- Catalog
BQ24618的完整型号有：BQ24618RGER、BQ24618RGET，以下是这些产品的关键参数及官网采购报价：
BQ24618RGER，工作温度：-40 to 85，封装：VQFN (RGE)-24，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：NIPDAU，TI官网BQ24618RGER的批量USD价格：2.218（1000+）
BQ24618RGET，工作温度：-40 to 85，封装：VQFN (RGE)-24，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：NIPDAU，TI官网BQ24618RGET的批量USD价格：2.662（1000+）
BQ24618RGER，工作温度：-40 to 85，封装：VQFN (RGE)-24，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：NIPDAU，TI官网BQ24618RGER的批量USD价格：2.218（1000+）
BQ24618RGET，工作温度：-40 to 85，封装：VQFN (RGE)-24，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：NIPDAU，TI官网BQ24618RGET的批量USD价格：2.662（1000+）
