DC512B: 12.6V @ 3A, Li-Ion Battery Charger, 15 ~ 25V in

Summary

Demonstration circuit DC512B is a single battery switching step-down charge controller featuring the LTC4100. The recommended input power is 15 to 20V at 3.5A. A two-position jumper allows choice of protected output voltage range suitable for 3- and 4-Cell Li-ion batteries. Removal of the jumper allows full output voltage range. The maximum charge current is 4A.

The demo board is initially configured for 12.6V at 3A for popular 3-cell Li-ion battery packs. LTC4100 will automatically charge a Smart Battery to termination as soon as input power is applied with a battery connected prior to power up. A VOUT pin automatically provides power to the system load from the wall adapter or battery. Status LEDs are provided for CHG, ACP, SMBALERT and SMBus activity.

The optional DC1223A-B SMBUS to USB adapter and associated software to control, monitor, and data log the system for demonstration purposes only. This software is not required to charge a battery with the DC512B. Contact your LT representative for ordering a DC1223A-B.

Specifications

Manufacturer	Analog Devices Inc.
Category	Power Management
Sub-Category	Battery Chargers
Eval Board Part Number	505-DC512B-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Cell Type	Lithium Ion, Li-Ion
Configuration	3 or 4 Cells (Li-Ion)
Voltage In	15 ~ 25 V
Voltage Out	12.6 V
Current Out	3 A
Features	Current Limit (Adj. or Fixed) Over Current Protection Over Voltage Protection SMBus Interface Under Voltage Protection, Brown-Out
Quiescent Current [Typical]	3 mA
Sleep Mode Current [Typical]	2 mA
Component Count + Extras	36 + 40
Application / Target Market	Computers Memory Back-up Portable Devices
Design Author	Linear Technology
Main I.C. Base Part	LTC4100
Quiescent Current [Maximum]	5 mA
Sleep Mode Current [Maximum]	3 mA
Date Created By Author	2012-05
Date Added To Library	2016-11