BQ26100DRPR屬于集成電路（IC）的電池管理。由美國德州儀器公司制造生產(chǎn)的BQ26100DRPR電池管理電池管理 PMIC（電源管理集成電路）系列產(chǎn)品可用于電池相關的監(jiān)測和控制功能，包括身份驗證、電池平衡、狀態(tài)監(jiān)測、電量計量、電源選擇、短路保護、過壓和欠壓保護等等。請注意，雖然該系列中的某些產(chǎn)品可能包括電池充電功能，但將充電功能作為主要功能的產(chǎn)品是單獨分類的。

1 Features

1? 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

2 Applications

? Cellular phones

? PDA and smart phones

? MP3 players

? Digital cameras

? Internet appliances

? Handheld devices

3 Description

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.