Wednesday, September 7, 2016

3.7V Lithium-Ion Battery Charger Circuit using MCP73831 IC

Electronic Kit School. - This is one electronic circuit of battery charger circuit for lithium ion battery this time. One circuit that will provide this 3.7V output for charging lithium ion battery.

Read also: LiPo Battery Charger Circuit for RC Toys using TP4056 IC

As we know that Lithium-ion batteries have become popular for portable electronics because they boast the highest energy density of any commercial battery technology. Benefits include thousands of recharges and no occurrence of the “memory effect” that infested early NiCd rechargeable cells. However, Li-ion batteries need to be charged following a carefully controlled constant current/constant voltage (CV-CC) pattern that is unique to this cell chemistry. 

In this article we will give you one electronic circuit of 3.7V Lithium-Ion Battery Charger Circuit using MCP73831 IC like in Figure 1 below. The main component that used in this circuit is MCP73831 IC.


Figure 1. 3.7V Lithium-Ion Battery Charger Circuit using MCP73831 IC

Component Parts

  1. MCP73831 IC
  2. Resistor
  3. Capacitors

Circuit like in Figure 1 above show you about the V3.7V Lithium-Ion Battery Charger Circuit using MCP73831 IC that give you one reference circuit to build by yourself of 3.7V Li-ion battery charger now.

From Electroschematics site that this is a tried and tested sample circuit of a Li-Ion battery charger that can be used to charge any 3.7V Li-Ion battery using a 5VDC (USB, Solar Panel…) power supply. At the heart of the circuit is one microchip MCP73831, available in SOT-23-5 package. MCP73831 is a highly advanced linear charge management controller for use in space-limited, cost-sensitive applications. This IC employs a constant current/constant voltage charge algorithm with selectable preconditioning and charge termination.


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