LTC6803IG-3#TRPBF

Overview

The LTC6803IG-3#TRPBF is a second-generation battery stack monitor designed for managing and monitoring up to 12 cells in series. It integrates a 12-bit ADC, a precision voltage reference, and a high-voltage input multiplexer. The device operates with a supply voltage range of 4V to 55V and supports communication via an SPI-compatible interface. It features a low-power standby mode and includes diagnostic capabilities such as open-circuit detection and thermal shutdown.

Feature Summary

• Integrates a 12-bit analog-to-digital converter for precise cell voltage measurement
• Includes a high-voltage input multiplexer capable of handling stacked cell configurations
• Supports daisy-chaining multiple devices for monitoring large battery stacks
• Features diagnostic functions including open-circuit detection and thermal protection

Applications

• Lithium-ion battery pack monitoring in electric vehicles
• Energy storage system cell balancing and state estimation
• Uninterruptible power supply (UPS) battery management
• Industrial equipment battery backup systems

Procurement Notes

Verify the suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the -3 variant designation matches the required pinout and functional specifications for your design. Ensure compatibility with your microcontroller's SPI interface timing requirements. Check for any recent product change notifications that may affect pin assignments or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when monitoring up to 12 series-connected cells is required. Consider the -3 suffix for specific package or performance variants compared to other LTC6803 models. Evaluate the need for daisy-chain capability if more than 12 cells are present. Verify operating temperature range suitability for your application environment. Compare against higher-channel alternatives like the LTC6804 if additional channels are needed.

Part Context

The LTC6803 belongs to Analog Devices' second-generation battery monitor family. It is part of the broader LTC68xx series designed for high-accuracy cell monitoring. This specific model focuses on 12-cell applications, offering a balance between channel count and cost. It complements other devices in the ecosystem such as the LTC6811 for lower channel counts or the LTC6804 for higher density.

Replacement Considerations

Direct substitutes include the LTC6803IG-3#PBF for tube packaging instead of tape-and-reel. The LTC6803HG-4#PBF offers a different package option but similar functionality. Verify pin compatibility and software register mapping when switching between these variants. No cross-family replacements are directly equivalent without significant design changes.