Battery charger circuits electronic circuits design

Simple and complex battery chargers electronic circuits design projects and schematics with diagrams and description for various battery type.

Power management integrated circuit LTC3554

This micropower multifunction power management integrated circuit (PMIC) is designed using LTC3554 manufactured by Linear Technology Corporation and is a solution for portable Li-Ion Polymer battery-based applications.

Circuit Diagram: 
Power management integrated circuit LTC3554
Electronic Circuits: 

NiCd charger circuit diagram with transistors

This NiCd charger allows simultaneous charging of up to seven NiCd batteries connected in series. This number can be increased if the supply voltage increases by about 1.65 V for each battery. Given that T2 is mounted on appropriate heat radiator, the input voltage can be increased to a maximum of 25 V.

Circuit Diagram: 
NiCd charger circuit diagram with transistors
Electronic Circuits: 

CV/CC charger circuit diagram designed using LinKSwitch

A very simple 3.25W CV/CC charger can be designed using LinKSwitch || family IC manufactured by Power Integrations. This electronic circuit project is designed to provide a 5 volts output at a maximum current of 650mA . This 3.25W CV/CC charger , needs to be powered using a AC voltage between 85 and 265 VAC . The AC input power is rectified by diodes D1 through D4. Bulk storage capacitors C1 and C2 filter the rectified AC. Inductor L1 forms a pi (π) filter with C1 and C2 to attenuate conducted differential-mode EMI noise.

Circuit Diagram: 
CV/CC charger circuit diagram designed using LinKSwitch
Electronic Circuits: 

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