MCP73827 Series

Single Cell Lithium-Ion Charge Management Controller

Catalog

Single Cell Lithium-Ion Charge Management Controller

Part	Number of Cells	Battery Pack Voltage	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply (Max)	Supplier Device Package	Package / Case	Package / Case [custom]	Package / Case	Current - Charging	Mounting Type	Battery Chemistry
Microchip Technology MCP73827-4.2VUA	1	4.2 V	-20 °C	85 C	5.5 V	8-MSOP	8-MSOP 8-TSSOP	0.118 in	3 mm	Constant - Programmable	Surface Mount	Lithium Ion
Microchip Technology MCP73827-4.1VUA	1	4.1 V	-20 °C	85 C	5.5 V	8-MSOP	8-MSOP 8-TSSOP	0.118 in	3 mm	Constant - Programmable	Surface Mount	Lithium Ion

Catalog

Single Cell Lithium-Ion Charge Management Controller

Key Features

• + Low Power Dissipation

• + Shutdown Current: 0.5uA (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 Current Monitor Output

• + Charge Status Indicator Output

• + Foldback Current Limiting

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

Description

The MCP73827 is a battery charger controller for single cell 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 current monitor, and charge status LED indicator output. An overall system accuracy of 1% ensures that the cell capacity is fully utilized without cycle life degradation. An external resistor sets charge current. The MCP73827 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 space-saving 8-Pin MSOP.