BQ26221 具有电压测量和 HDQ/OMAP 通信功能的基于闪存的精密多化合物充电/放电计数器
|
BQ26221 |
| Communication Interface |
HDQ |
| # Series Cells |
2,3,4 |
| Pin/Package |
8TSSOP |
| Approx. Price (US$) |
2.60 | 1ku |
| Operating Temperature Range(°C) |
-20 to 70 |
| Implementation |
Pack |
BQ26221 描述
The bq26221 is an advanced battery monitoring device designed to accurately measure the charge and discharge currents in rechargeable battery packs. Intended for pack integration, the bq26221 contains all the necessary functions to form the basis of a comprehensive battery capacity management system in portable applications such as cellular phones, PDAs, or other portable products.
The bq26221 works with the host controller in the portable system to implement the battery management system. The host controller is responsible for interpreting the bq26221 data and communicating meaningful battery data to the end-user or power management system.
This device provides 64 bytes of general-purpose flash memory, 8 bytes of ID ROM and 32 bytes of flash-backed RAM for data storage
BQ26221 特性
- Communicates Directly With the Integrated HDQ Engine in TI OMAPTM Processor
- Multifunction Monitoring Integrated Circuit Designed to Work With an Intelligent Host Controller :
- Provides State of Charge Information for Rechargeable Batteries
- Provides Accurate Battery Voltage and Temperature Measurement
- High Accuracy Coulometric Charge and Discharge Current Integration With Automatic Offset Compensation
- 11-Bit Analog-to-Digital Converter Reports Battery Voltage With Gain and Offset Correction
- Differential Current Sense
- 32 Bytes of General Purpose RAM
- 96 Bytes of Flash (Including 32 Bytes of Shadow Flash)
- 8 Bytes of ID ROM
- Internal Temperature Sensor Eliminates the Need for an External Thermistor
- Programmable Digital Input/Output Port
- High-Accuracy Internal Timebase Eliminates External Crystal Oscillator
- Low Power Consumption:
- Operating : 30 uA
- Sleep: 1 uA
- Hibernate: 600 nA
- Single-Wire HDQ Serial Interface
- Packaging: 8-LEAD TSSOP
BQ26221 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 |
| BQ26221PW |
ACTIVE |
-20 to 70 |
3.05 | 1ku |
TSSOP (PW) | 8 |
100 | TUBE |
|
| BQ26221PWG4 |
ACTIVE |
-20 to 70 |
3.05 | 1ku |
TSSOP (PW) | 8 |
100 | TUBE |
|
| BQ26221PWR |
ACTIVE |
-20 to 70 |
2.55 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
|
| BQ26221PWRG4 |
ACTIVE |
-20 to 70 |
2.55 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
|
BQ26221 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 |
| BQ26221PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ26221PW |
BQ26221PW |
| BQ26221PWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ26221PWG4 |
BQ26221PWG4 |
| BQ26221PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ26221PWR |
BQ26221PWR |
| BQ26221PWRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ26221PWRG4 |
BQ26221PWRG4 |
BQ26221 应用技术支持与电子电路设计开发资源下载
- BQ26221 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)
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