BQ26231 在嵌入式便携应用领域中用于电池容量监测的具有成本优势的库仑计数器
|
BQ26231 |
| Communication Interface |
HDQ |
| # Series Cells |
2,3,4 |
| Pin/Package |
8TSSOP |
| Approx. Price (US$) |
1.90 | 1ku |
| Operating Temperature Range(°C) |
-20 to 70 |
| Implementation |
Pack |
BQ26231 描述
The bq26231 is a low-cost charge/discharge counter peripheral in an 8-pin TSSOP. It works with an intelligent host controller, providing state-of-charge information for rechargeable Li-Ion, Li-Pol, or NiMH batteries. The bq26231 measures the voltage drop across a low-value series sense resistor between the negative terminal of the battery and the battery pack ground contact. By using the accumulated counts in the charge, discharge, and self-discharge registers, an intelligent host controller can determine battery state-of-charge information. To improve accuracy, an offset count register is available. The system host controller is responsible for the register maintenance by resetting the charge in/out and self-discharge registers as needed.
BQ26231 特性
- Multifunction High-Accuracy Coulometric Charge and Discharge Counter
- Ideal for Portable Applications With Nonremovable Rechargeable Battery Pack
- Resolves Signals Less Than 12.5 uV
- Internal Offset Calibration Improves Accuracy
- 128 Bytes of General-Purpose RAM
- Internal Temperature Sensor Eliminates the Need for an External Thermistor
- High-Accuracy Internal Timebase Eliminates External Crystal Oscillator
- Low Power Consumption:
- Operating: < 80 uA
- Sleep: < 10 uA
- Single-Wire HDQ Serial Interface
- Packaging: 8-Lead TSSOP
BQ26231 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 |
| BQ26231PW |
ACTIVE |
-20 to 70 |
2.25 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
|
| BQ26231PWG4 |
ACTIVE |
-20 to 70 |
2.25 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
|
| BQ26231PWR |
ACTIVE |
-20 to 70 |
1.90 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
|
| BQ26231PWRG4 |
ACTIVE |
-20 to 70 |
1.90 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
|
BQ26231 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 |
| BQ26231PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ26231PW |
BQ26231PW |
| BQ26231PWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ26231PWG4 |
BQ26231PWG4 |
| BQ26231PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ26231PWR |
BQ26231PWR |
| BQ26231PWRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ26231PWRG4 |
BQ26231PWRG4 |
BQ26231 应用技术支持与电子电路设计开发资源下载
- BQ26231 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)
BQ26231 相关工具