ISL6296DHZ-TR5287

Battery Management Overview

The ISL6296DHZ-TR5287 is a battery authentication integrated circuit utilizing Intersil’s FlexiHash technology. It functions as a fixed-secret hash engine designed for low-cost applications, employing a challenge-response scheme to prevent cloning via eavesdropping. The device supports 1-cell Li-Ion/Li-Poly or 3-cell series NiMH battery packs, operating within a voltage range of 2.6V to 4.8V. It features a single-wire XSD bus interface compatible with UARTs or GPIO, includes on-chip voltage regulation, and offers a true zero-power sleep mode.

Battery Management Feature Summary

• Implements a challenge-response authentication scheme using 32-bit challenge codes and 8-bit authentication codes to ensure security.
• Integrates 16x8 OTP ROM capable of storing three sets of host-selectable secrets along with additional programmable memory for ID codes.
• Utilizes a non-unique mapping of secret keys to authentication codes to maximize hacking difficulty through exhaustive key search requirements.

Battery Management Applications

• Battery pack authentication for portable consumer electronics
• Protection against after-market replacement in low-cost devices
• Authentication for handheld power tools and lawn equipment

Battery Management Procurement Notes

Verify the specific suffix TR5287 against official Renesas documentation to confirm tape-and-reel specifications and quantity. Ensure compatibility with existing host controller interfaces, particularly regarding the XSD bus timing and UART compatibility. Confirm that the package type matches the design constraints for the target application.

Battery Management Selection Notes

Select this component when cost-effective battery authentication is required without the complexity of high-maintenance monetary-grade algorithms. It is suitable for designs needing direct powering from battery terminals with minimal external components. Consider the single-wire interface requirements and the need for CRC support on read data during system architecture planning.

Battery Management Part Context

The ISL6296 belongs to the FlexiHash family of battery authentication devices manufactured by Intersil, now part of Renesas Electronics. This series addresses the need for secure, low-power identification in rechargeable battery packs. The device provides a hardware-based solution to protect intellectual property and revenue by preventing unauthorized cloning of battery management systems.

Battery Management Replacement Considerations

The ISL9206 is documented as a pin-for-pin compatible alternative. Verify functional equivalence and interface compatibility before substitution. No other public substitute part numbers are confirmed for this specific model.