Lithium battery charger schematic circuit design using LTM8061 IC


Posted on Feb 5, 2014

A very simple and efficiency Lithium battery charger and monitoring system, can be designed using the LTM8061 integrated circuit, designed by Linear Technology. The LTM8061 IC is a high efficiency 32V, 2A Module standalone Lithium battery charger optimized for one and two-cell packs, with fixed float voltage options: 4. 1V, 4. 2V, 8. 2V and 8. 4V


Lithium battery charger schematic circuit design using LTM8061 IC
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. A precondition feature trickle charges a depleted battery, and bad battery detection provides a signal and suspends charging if a battery does not respond to preconditioning. The LTM8061 can be configured to terminate charging when charge current falls to one-tenth the programmed maximum current or to use an internal timer if a time based termination scheme is desired. When charging is terminated, the LTM8061 enters a low current standby mode. If the battery voltage drops 2. 5% from the fl oat voltage, or if a new battery is inserted into a charging system, the auto-restart feature starts a new charge cycle. To design a charger using the LTM8061 IC, you`ll need just to select the right chip and apply few equations ( just in case if you don`t want the standard configuration, for example if you want to limit the input current ).




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