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