BQ24740

BQ24740 描述

The bq24740 is a high-efficiency, synchronous battery charger with integrated compensation, offering low component count for space-constrained multi-chemistry battery charging applications. Ratiometric 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 bq24740 charges two, three, or four series Li+ cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm thin QFN package. The bq24740 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

BQ24740 BQ24750A BQ24751B BQ24753 BQ24753A
# Series Cells 2-4   2-4   2-4   2-4   2-4  
Charge Status Outputs 1   1   1   1   1  
Control Topology Switchmode   Switchmode   Switchmode   Switchmode   Switchmode  
Switching Frequency(kHz) 300   300   300   300   300  
Primary Charge Termination Method Host Controlled   Host Controlled   Host Controlled   Host Controlled   Host Controlled  
Pin/Package 28VQFN   28VQFN   28VQFN   28VQFN   28VQFN
BQ24740 特性
BQ24740 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
BQ24740RHDR ACTIVE -40 to 85 2.50 | 1ku VQFN (RHD) | 28 3000 | LARGE T&R  
BQ24740RHDT ACTIVE -40 to 85 2.90 | 1ku VQFN (RHD) | 28 250 | SMALL T&R  
BQ24740 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
BQ24740RHDR Green (RoHS & no Sb/Br)  CU NIPDAU Level-2-260C-1 YEAR BQ24740RHDR BQ24740RHDR
BQ24740RHDT Green (RoHS & no Sb/Br)  CU NIPDAU Level-2-260C-1 YEAR BQ24740RHDT BQ24740RHDT
BQ24740 应用技术支持与电子电路设计开发资源下载
  1. BQ24740 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器电池管理产品选型与价格 . xls
  3. 照明和显示屏电源选择指南 (PDF 1427 KB)
  4. QFN Layout Guidelines (PDF 1279 KB)
  5. 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
  6. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)   (PDF  2206 KB)
  7. PowerPAD™ Made Easy (PDF 57 KB)
  8. 标准线性产品交叉参考 (Rev. D)   (PDF  1058 KB)
  9. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  10. 所选封装材料的热学和电学性质 (PDF 645 KB)
  11. 高速数据转换 (PDF 1967 KB)
BQ24740 相关工具
名称 型号 公司 工具/软件类型
用于多节同步笔记本充电器的 BQ24740EVM BQ24740EVM Texas Instruments 开发电路板/EVM
BQ24740 评估模块 BQ24740EVM-146 Texas Instruments 开发电路板/EVM
BQ24740 评估模块 BQ24740EVM-257 Texas Instruments 开发电路板/EVM