MCP73841/2/3/4 Datasheet
http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gifMCP73841/2/3/4 DatasheetThe MCP73843 combines high accuracy constant-voltage (0.5% max), constant-current regulation, cell preconditioning, advanced safety timers, automatic charge termination, and charge status indication in a space saving MSOP-8 package. The device provides a complete, fully functional, stand-alone charge management solution for applications utilizing single cell Lithium-Ion or Lithium-Polymer battery packs. Two preset voltage regulation options are available, 4.1V and 4.2V, for use with either coke or graphite anodes. The MCP73843 operates with an input voltage range of 4.5V to 12V and is fully specified over the ambient temperature range of -40°C to +85°C.
Parameter NameValue
Linear ModeYes
# of Cells1
Int/Ext FETExt
Vcc Range (V)4.5 to 12
Voltage Regulation Accuracy (%)0.5
Temperature MonitorNo
Charge Safety TimersYes
Max Thermal RegulationNo
Features
Safety Charge Timers
Automatic Charge Termination
Automatic Recharge
Charge Status Indicator
High Accuracy Voltage Regulation: 0.5% (Max)
Automatic Preconditioning of Deeply Depleted Cells
Shutdown Current: 0.25µA (Typical)
No Inductor Required
Programmable Charge Current
Automatic Power-Down When Input Power Removed
–40°C to +85°C Ambient Operating Temperature ange
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