BQ24705RGET 供应商
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BQ24705RGET
品牌：TI 封装/批号：原厂原装/22+ -
BQ24705RGET
品牌：TI(德州仪器) 封装/批号：VQFN-24/2022+ -
BQ24705RGET
品牌：TI 封装/批号：QFN/23+
BQ24705RGET 属性参数
- 标准包装：250
- 类别：集成电路 (IC)
- 家庭：PMIC - 电池管理
- 系列：-
- 功能：充电管理
- 电池化学：多化学
- 电源电压：5 V ~ 24 V
- 工作温度：0°C ~ 125°C
- 安装类型：表面贴装
- 封装/外壳：24-VFQFN 裸露焊盘
- 供应商设备封装：24-VQFN 裸露焊盘（4x4）
- 包装：带卷 (TR)
- 配用：BQ24705EVM-ND - BQ24705EVM
产品特性
- NMOS-NMOS Synchronous Buck Converter with 600 kHz Frequency and >95% Efficiency
- 30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
- High-Accuracy Voltage and Current Regulation ±0.5% Charge Voltage Accuracy ±3% Charge Current Accuracy ±3% Adapter Current Accuracy ±2% Input Current Sense Amp Accuracy
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Adapter Current Accuracy
- ±2% Input Current Sense Amp Accuracy
- Integration Internal Loop Compensation Internal Soft-Start
- Internal Loop Compensation
- Internal Soft-Start
- Safety Input Overvoltage Protection (OVP) Dynamic Power Management (DPM) with Status Indicator
- Input Overvoltage Protection (OVP)
- Dynamic Power Management (DPM) with Status Indicator
- Supports Two, Three, or Four Li+ Cells
- 5 - 24 V AC/DC-Adapter Operating Range
- Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control Charge Voltage (4-4.512 V/cell) Charge Current (up to 8 A, with 10-m Sense Resistor) Adapter Current Limit (DPM)
- Charge Voltage (4-4.512 V/cell)
- Charge Current (up to 8 A, with 10-m Sense Resistor)
- Adapter Current Limit (DPM)
- Status and Monitoring Outputs AC/DC Adapter Present with Programmable Voltage Threshold DPM Loop Active (DPMDET) Current Drawn from Input Source
- AC/DC Adapter Present with Programmable Voltage Threshold
- DPM Loop Active (DPMDET)
- Current Drawn from Input Source
- Supports Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.
- Charge Enable
- 10-µA Off-State Battery Current
- 24-pin, 4x4-mm QFN Package
- APPLICATIONS Notebook and Ultra-Mobile Computers Portable Data-Capture Terminals Portable Printers Medical Diagnostics Equipment Battery Bay Chargers Battery Back-Up Systems
- Notebook and Ultra-Mobile Computers
- Portable Data-Capture Terminals
- Portable Printers
- Medical Diagnostics Equipment
- Battery Bay Chargers
- Battery Back-Up Systems
产品概述
The bq24705 is a high-efficiency, synchronous battery charger with integrated compensation, offering low component count for space-limited multi-chemistry battery charging applications. Charge current and voltage programming allows high regulation accuracies, and can be either hardwired with resistors, or programmed by the system power-management microcontroller using a DAC or GPIOs. The bq24705 charges two, three, or four series Li+ cells, supporting up to 8 A of charge current, and is available in a 24-pin, 4x4-mm thin QFN package.The bq24705 features Dynamic Power Management (DPM) and input power limiting. These features reduce battery charge current when the input power limit is reached to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously. A highly-accurate current-sense amplifier enables precise measurement of input current from the AC adapter to monitor the overall system power.