BQ26100是TI公司的一款电池监控,保护及认证解决方案产品，BQ26100是具有 SDQ 接口的基于 SHA-1/HMAC 安全和认证 IC，本页介绍了BQ26100的产品说明、应用、特性等，并给出了与BQ26100相关的TI元器件型号供参考。
BQ26100 - 具有 SDQ 接口的基于 SHA-1/HMAC 安全和认证 IC - 电池监控,保护及认证解决方案 - 电池管理产品 - TI公司（Texas Instruments，德州仪器）
- Provides Authentication of Battery Packs Through SHA-1 Engine Based HMAC
- 160-Bytes 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
- Cellular Phones
- PDA and Smart Phones
- MP3 Players
- Digital Cameras
- Internet Appliances
- Handheld Devices
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.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| bq26100 | VSON (6) | 3.00 mm × 3.00 mm |
