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Lithium Ion Battery Charger Circuits  Page 2
Battery Charges      Alkaline       Lead Acid        Lithium     
Nickel

Last Updated on: Wednesday, July 16, 2014 06:34 AM
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Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
AN960: New Components & Design Methods Bring Intelligence to Battery Charger Applications -  Microchip Application Note Published 19-Nov-04  (app note added 2/06)

AN971: USB Port-Powered Li-ION/Li-Polymer Battery Charging -  Microchip Application Note Published 31-Jan-05  (app note added 2/06)
Battery Circuit Extends Power over Ethernet Poe Peak Current -  DN361  Design Notes (Linear Technology)  (app note added 1/06)
Battery Rejuivnator for Lithium Batteries -  These batteries are Not Rechargable. But you can get Considerable Extra Life in this way....(electronic schematic added 12/08)

Charge Li Ion Batteries from AC Line Voltage -  03/02/98 EDN-Design Ideas  Converts energy from120 Volt AC to a regulated voltage or Current as necessary to charge two Li ion Cells in series.…File contains many circuits, please scroll to find this one.... [Design Idea by Matt Schindler, Maxim Integrated Products, Sunnyvale, CA]
Configuration Guide for LM3647 Reference Design -  National Semiconductor Application Note  (app note added 2/06)
Dual Smart Battery Charger Simplifies Battery Backup for Servers -  DN342  Design Notes (Linear Technology)  (app note added 2/06)
Eight Solar Cell Lithium Ion Battery Charger - A single lithium ion battery cell needs 4.2v from a current source to insure it is fully charged.  A solar panel with just enough individual cells wired in series to produce the needed voltage would be more efficient than one with more cells for a given surface area.  If you divide 4.2 by eight you come up with a figure of 0.525 volts....[Circuit of the Week designed by David A. Johnson, P.E.]
Eight Solar Cell Lithium Ion Battery Charger Version 2 Jim Wilber looked at my design for a battery charger and sent me some suggested changes.  He suggested using the LTC4412 ideal diode IC to switch off the current path from the solar cell to the battery in darkness.  He also noted that the 2.5v regulator from Seiko I had selected was no longer in production and suggested using the shunt reference.  I think his suggestions made a lot of sense.  In my design, in dark conditions, the first MOSFET Q1 would not turn off until well after the point where the solar panel no longer produces current, allowing some leakage current to flow from the battery into the solar panel......[Designed by David A. Johnson, P.E.]
Inexpensive Circuit Charges Lithium-Ion Cells -  DN188  Design Notes (Linear Technology) (app note added 1/06)
iPOD Charger 1 -  MP3 Player Charger (added 08/07/06)
Li ion battery charger adapts to different chemistries -  09/02/99 EDN-Design Ideas:....[Design Idea added 6/06]  EDN migrating links. This link is not verified.  Search the "title" + "EDN" for new link.
Li ion Boost Circuit uses No inductors -  09/12/97 EDN-Design Ideas  Circuit to maintain regulated3.3V supply for portable applications....[Design Idea added 10/06] EDN migrating links. This link is not verified.  Google the "title" EDN for new link.
Li-Ion Charge Termination IC Interfaces with PWM Switchers -  DN242  Design Notes (Linear Technology) (app note added 2/06)
Li-ION Charge Termination using the LT1505 -  DN244  Design Notes (Linear Technology) (app note added 2/06)
Li-Ion Charger -  Lithium Ion batteries pack a lot of power by weight compared to other types.  There are 2 things that need to be handled differently than nicad on NiMH…. [Luhan Monat - Mesa Arizona]
Li-ION Linear Charger Allows Fast Full Current Charging While Limiting PC Board Temperature to 85°C -  DN283  Design Notes (Linear Technology) (app note added 2/06)
Lithium charger -  Schematic only, no circuit description
Lithium Ion Battery Charging using Bipolar Transistors -  Zetec Semiconductors  Applications NotesThis application note explores the different types of charge techniques and associated discrete pass elements, highlighting the dominant discrete parameters and selection criteria for each charging technique.   (app note added 2/06)

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