BQ2002G 具有负 dV 和峰值电压检测终端的镍镉电池/镍氢电池闸控充电管理 IC
BQ2002G 描述
The bq2002E and bq2002G Fast-Charge ICs are low-cost CMOS battery-charge controllers providing reliable charge termination for both NiCd and NiMH battery applications. Controlling a current-limited or constant-current supply allows the bq2002E/G to be the basis for a cost-effective stand-alone or system-integrated charger. The bq2002E/G integrates fast charge with optional top-off and pulsed-trickle control in a single IC for charging one or more NiCd or NiMH battery cells.
Fast charge is initiated on application of the charging supply or battery replacement. For safety, fast charge is inhibited if the battery temperature and voltage are outside configured limits.
Fast charge is terminated by any of the following:
- Peak voltage detection (PVD)
- Negative delta voltage (-
V)
- Maximum voltage
- Maximum temperature
- Maximum time
After fast charge, the bq2002E/G optionally tops-off and pulse-trickles the battery per the pre-configured limits
| BQ2002G | |
| # Series Cells | Multiple |
| Charge Current(Max)(A) | >2 |
| Charge Status Outputs | 1 |
| Control Topology | Current Limited |
| Primary Charge Termination Method | dT/dt |
| Pin/Package | 8PDIP, 8SOIC |
| Vin(Max)(V) | 7 |
BQ2002G 特性
- Fast charge of nickel cadmium or nickel-metal hydride batteries
- Direct LED output displays charge status
- Fast-charge termination by rate of rise of temperature, maximum voltage, maximum temperature, and maximum time
- Internal band-gap voltage reference
- Optional top-off charge (BQ2002G only)
- Selectable pulse-trickle charge rates (BQ2002G only)
- Low-power mode
- 8-pin 300-mil DIP or 150-mil SOIC
BQ2002G 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 |
| BQ2002GSN | ACTIVE | 0 to 70 | 1.00 | 1ku | SOIC (D) | 8 | 75 | TUBE | |
| BQ2002GSNG4 | ACTIVE | 0 to 70 | 1.00 | 1ku | SOIC (D) | 8 | 75 | TUBE | |
| BQ2002GSNTR | ACTIVE | 0 to 70 | 0.85 | 1ku | SOIC (D) | 8 | 2500 | LARGE T&R | |
| BQ2002GSNTRG4 | ACTIVE | 0 to 70 | 0.85 | 1ku | SOIC (D) | 8 | 2500 | LARGE T&R |
BQ2002G 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 |
| BQ2002GSN | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2002GSN | BQ2002GSN |
| BQ2002GSNG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2002GSNG4 | BQ2002GSNG4 |
| BQ2002GSNTR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2002GSNTR | BQ2002GSNTR |
| BQ2002GSNTRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2002GSNTRG4 | BQ2002GSNTRG4 |
BQ2002G 应用技术支持与电子电路设计开发资源下载
- BQ2002G 数据资料 dataSheet 下载.PDF
- TI 德州仪器电池管理产品选型与价格 . xls
- 照明和显示屏电源选择指南 (PDF 1427 KB)
- QFN Layout Guidelines (PDF 1279 KB)
- 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A) (PDF 2206 KB)
- PowerPAD™ Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
BQ2002G 相关工具
| 名称 | 型号 | 工具/软件类型 |
| 电池充电器的快速搜索选择工具 | BATTERY_CHARGERS_SELECTION_TOOL | 免费评估工具 |
| 温度传感设计软件 | TEMPSENSE-SW | 分析软件 |
