LTC6813ILWE-1#3ZZPBF

Overview

The LTC6813ILWE-1#3ZZPBF is an 18-cell battery stack monitor featuring a daisy-chain isoSPI interface. It measures up to 18 series-connected cells with a total measurement error of less than 2.2mV and supports a 0V to 5V cell voltage range. The device operates on a supply voltage of 16V to 90V, draws 6µA in sleep mode, and provides passive balancing currents up to 200mA. It utilizes a 64-pin LQFP package and includes a built-in 5V regulator.

Feature Summary

• Supports simultaneous monitoring of up to 18 series-connected battery cells
• Features isoSPI interface for high-speed, RF-immune long-distance communication
• Provides passive cell balancing with individual PWM duty cycle control
• Includes integrated 5V regulator and configurable digital I/O lines

Applications

• Electric vehicle battery management systems
• Hybrid electric vehicle powertrains
• Grid energy storage systems
• Backup battery systems

Procurement Notes

Verify the specific suffix 'ILWE-1' against official Analog Devices documentation to confirm industrial temperature rating and pinout compatibility. Ensure the '#3ZZ' marking aligns with current manufacturing standards. Cross-reference datasheet revisions to validate functional equivalence before integration into production designs.

Selection Notes

Select this component for applications requiring precise voltage monitoring across extensive series strings. The isoSPI interface simplifies wiring complexity by allowing multiple devices to connect via a single host processor line. Consider the 200mA balancing capability when designing thermal management for high-capacity battery packs.

Part Context

This part belongs to the LTC6813 family of multicell battery stack monitors designed for high-voltage applications. It shares architectural similarities with the LTC6811 and LTC6812 but offers increased channel capacity. The device is AEC-Q100 qualified, ensuring reliability for automotive environments.

Replacement Considerations

LTC6813HLWE-1#3ZZTRPBF