BQ2004 具有负 dV、峰值电压检测、dT/dt 终端的镍镉电池/镍氢电池开关模式充电管理 IC
BQ2004 描述
The bq2004 Fast Charge IC provides comprehensive fast charge control functions together with high-speed switching power control circuitry on a monolithic CMOS device.
Integration of closed-loop current control circuitry allows the bq2004 to be the basis of a cost-effective solution for stand-alone and system integrated chargers for batteries of one or more cells.
Switch-activated discharge-before charge allows bq2004-based chargers to support battery conditioning and capacity determination.
High-efficiency power conversion is accomplished using the bq2004 as a hysteretic PWM controller for switch-mode regulation of the charging current. The bq2004 may alternatively be used to gate an externally regulated charging current
| BQ2004 | |
| # Series Cells | Multiple |
| Charge Current(Max)(A) | >2 |
| Charge Status Outputs | 2 |
| Control Topology | Switchmode |
| Switching Frequency(kHz) | 300 |
| Primary Charge Termination Method | (-)dV, PVD, dT/dt |
| Pin/Package | 16PDIP, 16SOIC |
| Vin(Max)(V) | 7 |
BQ2004 特性
- Fast charge and conditioning of nickel cadmium or nickel-metal hydride batteries
- Hysteretic PWM switch-mode current regulation or gated control of an external regulator
- Easily integrated into systems or used as a stand-alone charger
- Pre-charge qualification of temperature and voltage
- Configurable, direct LED outputs display battery and charge status
- Fast-charge termination by
V, maximum voltage, maximum temperature, and maximum time
- Optional top-off charge and pulsed current maintenance charging
- Logic-level controlled low-power mode (< 5uA standby current)
BQ2004 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 |
| BQ2004PN | ACTIVE | -20 to 70 | 2.15 | 1ku | PDIP (N) | 16 | 25 | TUBE | |
| BQ2004SN | ACTIVE | -20 to 70 | 2.60 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| BQ2004SNG4 | ACTIVE | -20 to 70 | 2.60 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| BQ2004SNTR | ACTIVE | -20 to 70 | 2.15 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| BQ2004SNTRG4 | ACTIVE | -20 to 70 | 2.15 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R |
BQ2004 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 |
| BQ2004SN | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2004SN | BQ2004SN |
| BQ2004SNG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2004SNG4 | BQ2004SNG4 |
| BQ2004SNTR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2004SNTR | BQ2004SNTR |
| BQ2004SNTRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2004SNTRG4 | BQ2004SNTRG4 |
BQ2004 应用技术支持与电子电路设计开发资源下载
- BQ2004 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)
- PowerPADTM 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)
BQ2004 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 |
| 用于镍镉电池/镍氢电池、开关模式、高达 3A 的 BQ2004 评估模块 | DV2004ES1 | 开发电路板/EVM |