MCP73862

Features:

• Linear Charge Management Controllers
- Integrated Pass Transistor
- Integrated Current Sense
- Reverse-Blocking Protection
• High-Accuracy Preset Voltage Regulation: + 0.5%
• Four Selectable Voltage Regulation Options:
- 4.1V, 4.2V - MCP73861
- 8.2V, 8.4V - MCP73862
• Programmable Charge Current: 1.2A Maximum
• Programmable Safety Charge Timers
• Preconditioning of Deeply Depleted Cells
• Automatic End-of-Charge Control
• Optional Continuous Cell Temperature Monitoring
• Charge Status Output for Direct LED Drive
• Fault Output for Direct LED Drive
• Automatic Power-Down
• Thermal Regulation
• Temperature Range: -40 to 85
• Packaging: 16-Pin, 4 x 4 QFN




Application

• Lithium-Ion/Lithium-Polymer Battery Chargers
• Personal Data Assistants
• Cellular Telephones
• Hand Held Instruments
• Cradle Chargers
• Digital Cameras
• MP3 Players




Specifications

Parameter NameValueMax Voltage Regulation (%)±0.5Linear ModeYes# of Cells2Int/Ext FETIntVcc Range (V)8.7 to 12Voltage Regulation Accuracy (%)0.5Temperature MonitorYesCharge Safety TimersYesMax Thermal RegulationYes

Parameter Name	Value
Max Voltage Regulation (%)	±0.5
Linear Mode	Yes
# of Cells	2
Int/Ext FET	Int
Vcc Range (V)	8.7 to 12
Voltage Regulation Accuracy (%)	0.5
Temperature Monitor	Yes
Charge Safety Timers	Yes
Max Thermal Regulation	Yes

V_DDN..........................................................................13.5V
VBATN, VSET, EN, STAT1, STAT2 w.r.t. V_SS
..............................................................-0.3 to (V_DD+0.3)V
PROG, THREF, THERM, TIMER w.r.t. V_SS................-0.3 to 6V
Maximum Junction Temperature, T_J ........ Internally Limited
Storage temperature ..................................-65to +150
ESD protection on all pins:
Human Body Model (1.5 k in series with 100 pF)... 4 kV
Machine Model (200 pF, No series resistance) ...........300V

† Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.




Description

The MCP73862 is a highly advanced linear charge management controller for use in space limited, high-performance applications. The MCP73862 integrates most of the external components (pass transistor, reverse blocking protection, current sensing) and combines high-accuracy constant voltage, constant current regulation, cell preconditioning, cell temperature monitoring, advanced safety timers, automatic charge termination, and charge status and fault indication in a space-saving 16-pin, 4 x 4 QFN package.The MCP73862 provides a complete, fully-functional,stand-alone charge management solution for dual-cell Li-Ion and Li-Polymer applications.

The MCP7386X family of devices are highly advanced linear charge management controllers for use in spacelimited, cost-sensitive applications. The MCP73861 and MCP73862 combine high-accuracy constant voltage, constant current regulation, cell preconditioning, cell temperature monitoring, advanced safety timers, automatic charge termination, internal current sensing, reverse-blocking protection, and charge status and fault indication in a space-saving 16-pin, 4 x 4 QFN package.

The MCP7386X provides a complete, fully-functional, stand-alone charge management solution with a minimum number of external components.

The MCP73861 is targeted for applicatioins utilizing single-cell Lithium-Ion or Lithium-Polymer battery packs, while the MCP73862 is targeted for dual series cell Lithium-Ion or Lithium-Polymer battery packs. The MCP73861 has two selectable voltage-regulation options available (4.1V and 4.2V), for use with either coke or graphite anodes, and operates with an input voltage range of 4.5V to 12V. The MCP73862 has two selectable voltage-regulation options available (8.2V and 8.4V), for use with coke or graphite anodes, and operates with an input voltage range of 8.7V to 12V.

The MCP7386X family of devices are fully specified over the ambient temperature range of -40 to +85.