MCP73842 Series

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

Catalog

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

Part	Supplier Device Package	Number of Cells [Max]	Number of Cells [Min]	Battery Chemistry	Package / Case	Package / Case [x]	Package / Case [x]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Fault Protection	Voltage - Supply (Max) [Max]	Programmable Features	Battery Pack Voltage
Microchip Technology MCP73842T-820I/UN	10-MSOP	2 cells	1	Lithium Ion/Polymer	10-MSOP 10-TFSOP	3 mm	0.118 in	Surface Mount	85 °C	-40 °C	Over Temperature	12 V	Timer
Microchip Technology MCP73842T-840I/UN	10-MSOP	2 cells	1	Lithium Ion/Polymer	10-MSOP 10-TFSOP	3 mm	0.118 in	Surface Mount	85 C	-40 °C	Over Temperature	12 V	Timer	8.4 V

Catalog

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

Key Features

• * Safety Charge Timers

• * Automatic Charge Termination

• * Automatic Recharge

• * Temperature Monitor

• * 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 MCP73842 combines high accuracy constant-voltage (0.5% max), constant-current regulation, cell preconditioning, cell temperature monitoring, advanced safety timers, automatic charge termination, and charge status indication in a space saving MSOP-10 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 MCP73842 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.