MCP73844 Microchip Technology, MCP73844 Datasheet

MCP73844

Manufacturer Part Number

MCP73844

Description

(MCP73841 - MCP73844) Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers

Manufacturer

Microchip Technology

Datasheet

1.MCP73844.pdf (24 pages)

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Features

• Linear Charge Management Controllers

• High-Accuracy Preset Voltage Regulation:

• Four Preset Voltage Regulation Options:

• Programmable Charge Current

• Programmable Safety Charge Timers

• Preconditioning of Deeply Depleted Cells

• Automatic End-of-Charge Control

• Optional Continuous Cell Temperature

• Charge Status Output for Direct LED Drive

• Automatic Power-Down when Input Power

• Temperature Range: -40°C to 85°C

• Packaging: MSOP-10 - MCP73841, MCP73842

Applications

• Lithium-Ion/Lithium-Polymer Battery Chargers

• Personal Data Assistants

• Cellular Telephones

• Hand-Held Instruments

• Cradle Chargers

• Digital Cameras

• MP3 Players

Typical Application Circuit

2004 Microchip Technology Inc.

- + 0.5% (max)

- 4.1V - MCP73841-4.1, MCP73843-4.1

- 4.2V - MCP73841-4.2, MCP73843-4.2

- 8.2V - MCP73842-8.2, MCP73844-8.2

- 8.4V - MCP73842-8.4, MCP73844-8.4

Monitoring (MCP73841 and MCP73842)

Removed

MA2Q705

10 µF

Lithium-Polymer Charge Management Controllers

1A Lithium-Ion Battery Charger

MSOP-8 - MCP73843, MCP73844

100 k

Advanced Single or Dual Cell Lithium-Ion/

100 m

SENSE

MCP73843

STAT1

NDS8434

TIMER

DRV

BAT

10 µF

0.1 µF

Single

Lithium-Ion

Cell

MCP73841/2/3/4

Description

The MCP7384X family of devices are highly advanced

linear charge management controllers for use in

space-limited,

MCP73841 and MCP73842 combine high accuracy,

constant-voltage, constant-current regulation, cell pre-

conditioning, cell temperature monitoring, advanced

safety timers, automatic charge termination and

charge status indication in space-saving, 10-pin

MSOP packages. The MCP73841 and MCP73842

provide complete, fully-functional, stand-alone charge

management solutions.

The MCP73843 and MCP73844 employ all the

features of the MCP73841 and MCP73842, with the

exception of the cell temperature monitor. The

MCP73843 and MCP73844 are offered in 8-pin MSOP

packages.

The MCP73841 and MCP73843 are designed 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 MCP73841 and

MCP73843 operate with an input voltage range of 4.5V

to 12V.

The MCP73842 and MCP73844 are designed 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). The

MCP73842 and MCP73844 operate with an input

voltage range of 8.7V to 12V.

The MCP7384X family of devices are fully specified

over the ambient temperature range of -40°C to +85°C.

Package Types

SENSE

THREF

SENSE

STAT1

cost-sensitive

10-Pin MSOP

8-Pin MSOP

applications.

DS21823B-page 1

DRV

TIMER

THERM

DRV

TIMER

BAT

The

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