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BQ26100 Datasheet Battery Pack Security Authentication

Manufacturer: Texas Instruments

Overview: Product Folder Order Now Technical Documents Tools & Software Support & Community bq26100 SLUS696C – JUNE 2006 – REVISED FEBRUARY 2019 bq26100 SHA-1/HMAC-based security and authentication IC with an SDQ interface.

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General 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.

Key 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.

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