BQ26100
- Provides authentication of battery packs through SHA-1 engine based HMAC
- 160-byte one-time programmable (OTP), 16-bytes EEPROM
- Internal time-base eliminates external crystal oscillator
- Low-power operating modes:
- Active: < 50 µA
- Sleep: 8 µA typical
- Single-wire SDQ interface
- Powers directly from the communication bus
- 6-lead VSON package
The bq26100 device provides a method to authenticate battery packs, ensuring that only packs manufactured by authorized sub-contractors are used in the end application. The security is achieved using the SHA-1 hash function inside the widely adopted keyed-hash message authentication code (HMAC) construction. A unique 128-bit key is stored in each bq26100 device, allowing the host to authenticate each pack.
The bq26100 device communicates to the system over a simple one-wire bi-directional serial interface. The 5-kbits/s SDQ bus interface reduces communications overhead in the external microcontroller. The bq26100 device also derives power over the SDQ bus line via an external capacitor.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | bq26100 SHA-1/HMAC-based security and authentication IC with an SDQ interface datasheet (Rev. C) | PDF | HTML | 2019/2/17 | ||
| 應用說明 | Method to Enhance Authentication Security of BQ26100 | PDF | HTML | 2022/9/6 | |||
| EVM User's guide | bq26100 Evaluation Software User's Guide (Rev. A) | 2013/10/4 | ||||
| 類比設計期刊 | Improving Battery Safety, Charging, and Fuel Gauging in Portable Media Apps | 2009/3/11 | ||||
| 應用說明 | Single-Cell Impedance Track Gas Gauge for Novices | 2007/6/16 | ||||
| 應用說明 | How to Implement SHA-1/HMAC Authentication for bq26100 (Rev. A) | 2006/10/9 |
設計與開發
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SLUC074 — EVSW for bq26100 and bq26100EVM
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRP) | 6 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。