BQ26100 Texas instruments

BQ26100

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BQ26100

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Описание

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.

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

Communication interface	SDQ
Features	SHA-1 Authentication
Vin (typ) (V)	5
Vin (max) (V)	7.7
Power consumption (typ) (mW)	50
Operating temperature range (°C)	-40 to 85
Rating	Catalog