DC1621A: 2 Cell, 7.2V, 2A Max, LiFePO4

Summary

Demonstration circuit 1621A features the LTM®8062, a 32V, 2A μModule® power tracking battery charger. The demonstration circuit is designed to operate from a 9.75V to 32V input source, and to charge a 2-cell battery pack to a float voltage of 7.2V.

The float voltage can easily be changed to a higher or lower voltage by adjusting the values of R2 and R3. R7 and R9 keep the converter off until the input has reached 8.5V, typically. JP2 allows for easy selection of C/10 or timer charge termination. The LTM8062 data sheet must be read in conjunction with this quick start guide for working on or modifying the demo circuit 1621A.

Specifications

Manufacturer	Analog Devices Inc.
Category	Power Management
Sub-Category	Battery Chargers
Eval Board Part Number	DC1621A-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Cell Type	Lithium Iron Phosphate, LiFePO4
Configuration	2 in Series
Voltage In	9.75 ~ 32 V
Voltage Out	7.2 V
Current Out	2 A
Features	Auto Off Auto Re-Charge Bad Battery Detection Cell Preconditioning Cell Temperature Monitoring Fault Indication Reverse Polarity Protection Shutdown, Enable, Standby
Quiescent Current [Typical]
Sleep Mode Current [Typical]	85 µA
Component Count + Extras	6 + 30
Application / Target Market	Automotive Solar Powered Back-up
Design Author	Linear Technology
Main I.C. Base Part	LTM8062
Quiescent Current [Maximum]
Sleep Mode Current [Maximum]
Date Created By Author
Date Added To Library	2011-06