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BQ26100 Series

SHA-1/HMAC Based Security & Authentication IC w/SDQ Interface

Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/

Catalog

SHA-1/HMAC Based Security & Authentication IC w/SDQ Interface

PartMounting TypeOperating Temperature [Max]Operating Temperature [Min]Supplier Device PackageFunctionInterfacePackage / CaseTypeSupplied ContentsPrimary AttributesEmbeddedUtilized IC / Part
Texas Instruments
BQ26100DRPR
Surface Mount
85 °C
-40 °C
6-VSON (3x3)
Battery Authorization
SDQ
6-VDFN Exposed Pad
Texas Instruments
BQ26100EVM
Anti Tamper and Security
Interface
Board(s), Cable(s)
Battery Authentication
BQ26100

Key Features

Provides authentication of battery packs through SHA-1 engine based HMAC160-byte one-time programmable (OTP), 16-bytes EEPROMInternal time-base eliminates external crystal oscillatorLow-power operating modes:Active: < 50 µASleep: 8 µA typicalSingle-wire SDQ interfacePowers directly from the communication bus6-lead VSON packageProvides authentication of battery packs through SHA-1 engine based HMAC160-byte one-time programmable (OTP), 16-bytes EEPROMInternal time-base eliminates external crystal oscillatorLow-power operating modes:Active: < 50 µASleep: 8 µA typicalSingle-wire SDQ interfacePowers directly from the communication bus6-lead VSON package

Description

AI
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. 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.