DC1894B: 12-Cell Battery Monitor, 11 ~ 55V in

Summary

Demonstration circuit 1894B is a daisy-chainable isoSPI battery-stack monitor featuring the LTC6804-1. These boards can be linked through a 2-wire isolated serial interface to monitor any number of cells on a stack.

Communication to a PC uses a DC590 USB interface board. A control program for up to ten stacked boards has a Graphical User Interface (GUI) to implement the device command set.

Multiple DC1894B can be daisy-chained using RJ45 terminated Ethernet patch cables.

The LTC6804 is a 3rd generation multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1.2mV. The cell measurement range of 0V to 5V makes the LTC6804 suitable for most battery chemistries. All 12 cell voltages can be captured in 290μs, and lower data acquisition rates can be selected for high noise reduction.

Specifications

Manufacturer Analog Devices Inc.
Category Power Management
Sub-Category Battery 'Fuel Gauge' for DC
Eval Board Part Number DC1894B-ND
Eval Board Supplier Analog Devices Inc.
Eval Board Normally In Stock
Cell Type Lithium Ion, Li-Ion
Lithium Polymer, Li-Pol
Configuration 12 in series
Voltage In 11 ~ 55 V
Features GUI / Design Software
LDO Regulator(s), On-Chip
Shutdown, Enable, Standby
SPI Interface
Application / Target Market Automotive
Battery Chargers
Portable Devices
Quiescent Current [Typical] 450 µA
Sleep Mode Current [Typical] 2.2 µA
Component Count + Extras 119 + 22
Design Author Linear Technology
Main I.C. Base Part LTC6804-1
Date Created By Author 2014-09
Date Added To Library 2016-11

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Support Documents & Media

DC1894B - User Guide LTC6804-1 / -2 - Datasheet

Media

DC1894B - Schematic - Full DC1894B - Board - Full DC1894B - Chart 1 - Full DC1894B - Chart 2 - Full DC1894B - Chart 3 - Full