BQ26100DRPR

Battery Management Overview

The BQ26100DRPR is a security and authentication integrated circuit manufactured by Texas Instruments. It utilizes an internal SHA-1 engine to perform HMAC-based authentication for battery packs, ensuring that only authorized components are used in the host application. The device features a single-wire SDQ interface for communication and includes 160 bytes of one-time programmable memory alongside 16 bytes of EEPROM. It operates with low power consumption, drawing less than 50 μA in active mode and 8 μA in sleep mode. The component is housed in a compact 6-lead VSON package.

Battery Management Feature Summary

• Provides hardware-level authentication of battery packs using SHA-1 based HMAC construction
• Integrates an internal time-base to eliminate the need for external crystal oscillators
• Supports direct powering from the communication bus via an external capacitor
• Features a single-wire bi-directional serial interface to reduce microcontroller overhead

Battery Management Applications

• Cellular phones
• PDA and smart phones
• MP3 players
• Digital cameras
• Handheld devices

Battery Management Procurement Notes

Verify the specific manufacturer part number against official Texas Instruments documentation to confirm compatibility. Ensure the selected variant matches the required package type and pin configuration for your design. Cross-reference datasheet revisions to validate feature sets and electrical characteristics before finalizing procurement decisions.

Battery Management Selection Notes

Select this component when secure battery pack authentication is required for portable electronic devices. The integrated SHA-1 engine and low-power operation make it suitable for applications where system integrity and energy efficiency are critical. Consider the single-wire interface requirements and available memory space for key storage during the design phase.

Battery Management Part Context

This component belongs to the family of security and authentication ICs designed for consumer electronics. It addresses the need for supply chain security by preventing unauthorized third-party batteries from being used in compatible devices. The integration of cryptographic functions directly onto the battery management system enhances overall product safety and reliability.

Battery Management Replacement Considerations

The BQ26100DRPRG4 is a confirmed public substitute part number listed in official documentation. Verify pinout and functional equivalence before substitution.

Battery Management FAQ

How does the BQ26100DRPR authenticate battery packs?

It uses an internal SHA-1 hash function within a keyed-hash message authentication code (HMAC) construction to verify the authenticity of the battery pack.

What type of interface does the device use for communication?

The device communicates via a simple single-wire bi-directional serial interface known as SDQ.