MCP73828 Series

Single Cell Lithium-Ion Charge Management Controller

Catalog

Single Cell Lithium-Ion Charge Management Controller

Part	Battery Pack Voltage	Supplier Device Package	Package / Case	Package / Case [custom]	Package / Case	Battery Chemistry	Operating Temperature [Min]	Operating Temperature [Max]	Number of Cells	Voltage - Supply (Max)	Mounting Type	Current - Charging
Microchip Technology MCP73828-4.1VUATR	4.1 V	8-MSOP	8-MSOP 8-TSSOP	0.118 in	3 mm	Lithium Ion	-20 °C	85 C	1	5.5 V	Surface Mount	Constant - Programmable
Microchip Technology MCP73828-4.2VUATR	4.2 V	8-MSOP	8-MSOP 8-TSSOP	0.118 in	3 mm	Lithium Ion	-20 °C	85 C	1	5.5 V	Surface Mount	Constant - Programmable
Microchip Technology MCP73828-4.2VUA	4.2 V	8-MSOP	8-MSOP 8-TSSOP	0.118 in	3 mm	Lithium Ion	-20 °C	85 C	1	5.5 V	Surface Mount	Constant - Programmable

Catalog

Single Cell Lithium-Ion Charge Management Controller

Key Features

• + Low Power Dissipation

• + Shutdown Current: 0.7uA (Typical)

• + No Inductor Required

• + 1 % Overall System Accuracy

• + Automatic Cell Preconditioning of Deeply Depleted Cells

• + Programmable Charge Current

• + Automatic Power-Down When Input Power Removed

• + Charge Complete Output

• + Continuous Temperature Monitor

• + Foldback Current Limiting

• + -20°C to +85°C Ambient Operating Temperature Range

Description

The MCP73828 is a battery charger controller for single cell Lithium-Ion (Li-Ion) batteries. Using an external PMOS transistor, safe and fast charging of a single Li-Ion cell is accomplished. Features include, over-current foldback, charge complete output, and continuous temperature monitor. An overall system accuracy of 1% ensures that the cell capacity is fully utilized without cycle life degradation. An external resistor can set charge current. The MCP73828 operates with an input voltage range from 4.5V to 5.5V. It is specified over the ambient operating temperature range of -20°C to +85°C and is available in a small 8-Pin MSOP.