Linear Technology LTC6804-1 - Table of Contents

LTC6804-1/LTC6804-2
2
680412fc
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Table oF conTenTs
Features ..................................................... 1
Applications ................................................ 1
Typical Application ........................................ 1
Description.................................................. 1
Absolute Maximum Ratings .............................. 3
Pin Configuration .......................................... 3
Order Information .......................................... 4
Electrical Characteristics ................................. 4
Pin Functions .............................................. 17
Block Diagram ............................................. 18
Operation................................................... 20
State Diagram .........................................................20
LTC6804 Core State Descriptions ...........................20
isoSPI State Descriptions .......................................21
Power Consumption ...............................................21
ADC Operation ........................................................ 21
Data Acquisition System Diagnostics .....................26
Watchdog and Software Discharge Timer ..............30
I
2
C/SPI Master on LTC6804 Using GPIOS ..............31
Serial Interface Overview ........................................35
4-Wire Serial Peripheral Interface (SPI)
Physical Layer ........................................................36
2-Wire Isolated Interface (isoSPI) Physical Layer ...36
Data Link Layer .......................................................44
Network Layer ........................................................44
Programming Examples .........................................54
Simple Linear Regulator .........................................58
Improved Regulator Power Efficiency .....................58
Fully Isolated Power ................................................59
Reading External Temperature Probes ....................59
Expanding the Number of Auxiliary
Measurements
........................................................ 60
Internal Protection Features ....................................60
Filtering of Cell and GPIO Inputs ............................. 60
Cell Balancing with Internal Mosfets .......................62
Cell Balancing with External MOSFETS...................62
Discharge Control During Cell Measurements ........62
Power Dissipation and Thermal Shutdown .............63
Method to Verify Balancing Circuitry ......................63
Current Measurement with a Hall Effect Sensor .....66
Current Measurement with a Shunt Resistor ..........66
Using the LTC6804 with Less Than 12 Cells ...........67
Package Description ..................................... 76
Revision History .......................................... 77
Typical Application ....................................... 78
Related Parts .............................................. 78