BQ2014 具有 1 线 (DQ) I/F、5 个 LED 驱动器以及用于 BQ2004 快速充电 IC 的控制信号的 NiCd/NiMH 电量监测计
BQ2014 描述
The bq2014 Gas Gauge IC is intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. The IC monitors the voltage drop across a sense resistor connected in series between the negative battery terminal and ground to determine charge and discharge activity of the battery.
Self-discharge of NiMH and NiCd batteries is estimated based on an internal timer and temperature sensor. Compensations for battery temperature and rate of charge or discharge are applied to the charge, discharge, and self-discharge calculations to provide available charge information across a wide range of operating conditions. Battery capacity is automatically recalibrated, or "learned," in the course of a discharge cycle from full to empty
|
BQ2014 |
| Battery Capacity(Min)(mAh) |
500 |
| Battery Capacity(Max)(mAh) |
6000 |
| Communication Interface |
DQ |
| Pin/Package |
16SOIC |
| Approx. Price (US$) |
3.85 | 1ku |
| Operating Temperature Range(°C) |
0 to 70 |
| Implementation |
Pack |
BQ2014 特性
- Conservative and repeatable measurement of available charge in rechargeable batteries
- Charge control output operates an external charge controller such as the bq2004 Fast Charge IC
- Designed for battery pack integration
- 120uA typical standby current
- Display capacity via single-wire serial communication port or direct drive of LEDs
- Measurements compensated for current and temperature
- Self-discharge compensation using internal temperature sensor
- User-selectable end-of-discharge threshold
- Battery voltage, nominal available charge, temperature, etc. available over serial port
- 16-pin narrow SOIC
BQ2014 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 |
| BQ2014SN-D120 |
ACTIVE |
0 to 70 |
4.60 | 1ku |
SOIC (D) | 16 |
40 | TUBE |
|
| BQ2014SN-D120G4 |
ACTIVE |
0 to 70 |
4.60 | 1ku |
SOIC (D) | 16 |
40 | TUBE |
|
| BQ2014SN-D120TR |
ACTIVE |
0 to 70 |
3.85 | 1ku |
SOIC (D) | 16 |
2500 | LARGE T&R |
|
| BQ2014SN-D120TRG4 |
ACTIVE |
0 to 70 |
3.85 | 1ku |
SOIC (D) | 16 |
2500 | LARGE T&R |
|
BQ2014 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 |
| BQ2014SN-D120 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ2014SN-D120 |
BQ2014SN-D120 |
| BQ2014SN-D120G4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ2014SN-D120G4 |
BQ2014SN-D120G4 |
| BQ2014SN-D120TR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ2014SN-D120TR |
BQ2014SN-D120TR |
| BQ2014SN-D120TRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ2014SN-D120TRG4 |
BQ2014SN-D120TRG4 |
BQ2014 应用技术支持与电子电路设计开发资源下载
- BQ2014 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)
BQ2014 相关工具