MCP73844 Series

Advanced Single/Dual Lithium-Ion/Li-Polymer Charge Management Controller

Catalog

Advanced Single/Dual Lithium-Ion/Li-Polymer Charge Management Controller

Part	Voltage - Supply (Max) [Max]	Number of Cells [Max]	Number of Cells [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Package / Case	Package / Case [custom]	Package / Case	Programmable Features	Mounting Type	Battery Chemistry	Battery Pack Voltage
Microchip Technology MCP73844T-820I/MS	12 V	2 cells	1	85 °C	-40 °C	8-MSOP	8-MSOP 8-TSSOP	0.118 in	3 mm	Timer	Surface Mount	Lithium Ion/Polymer
Microchip Technology MCP73844-840I/MS	12 V	2 cells	1	85 °C	-40 °C	8-MSOP	8-MSOP 8-TSSOP	0.118 in	3 mm	Timer	Surface Mount	Lithium Ion/Polymer	8.4 V
Microchip Technology MCP73844T-840I/MS	12 V	2 cells	1	85 °C	-40 °C	8-MSOP	8-MSOP 8-TSSOP	0.118 in	3 mm	Timer	Surface Mount	Lithium Ion/Polymer	8.4 V

Catalog

Advanced Single/Dual Lithium-Ion/Li-Polymer Charge Management Controller

Key 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 Range

Description

The MCP73844 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 dual series cell Lithium-Ion or Lithium-Polymer battery packs. Two preset voltage regulation options are available, 8.2V and 8.4V, for use with either coke or graphite anodes. The MCP73844 operates with an input voltage range of 8.7V to 12V and is fully specified over the ambient temperature range of -40°C to +85°C.