Microchip MCP73844 Manual

Microchip Ikke kategoriseret MCP73844

Læs gratis den danske manual til Microchip MCP73844 (26 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 14 personer og har en gennemsnitlig bedømmelse på 3.6 stjerner ud af 7.5 anmeldelser. Har du et spørgsmål om Microchip MCP73844, eller vil du spørge andre brugere om produktet?

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 2003-2013 Microchip Technology Inc. DS21823D-page 1

MCP73841/2/3/4

Features

• Linear Charge Management Controllers

• High-Accuracy Preset Voltage Regulation:

- + 0.5% (max)

• Four Preset Voltage Regulation Options:

- 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

• Programmable Charge Current

• Programmable Safety Charge Timers

• Preconditioning of Deeply Depleted Cells

• Automatic End-of-Charge Control

• Optional Continuous Cell Temperature

Monitoring (MCP73841 and MCP73842)

• Charge Status Output for Direct LED Drive

• Automatic Power-Down when Input Power

Removed

• Temperature Range: -40°C to 85°C

• Packaging: MSOP-10 - MCP73841, MCP73842

MSOP-8 - MCP73843, MCP73844

Applications

• Lithium-Ion/Lithium-Polymer Battery Chargers

• Personal Data Assistants

• Cellular Telephones

• Hand-Held Instruments

• Cradle Chargers

• Digital Cameras

• MP3 Players

Typical Application Circuit

Description

The MCP7384X family of devices are highly advanced

linear charge management controllers for use in

space-limited, cost-sensitive applications. The

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

VSS

DRVSENSE

VDD VBAT

STAT1

3 6

MCP73843

10 µF

100 k

100 m

5V Single

Lithium-Ion

Cell

NDS8434MA2Q705

1A Lithium-Ion Battery Charger

EN 5

TIMER

0.1 µF

10-Pin MSOP

SENSE

VDD

STAT1

DRV

VBAT

VSS

TIMER

MCP73843

MCP73844

8-Pin MSOP

VDD

STAT1

THREF

VBAT

VSS

TIMER

THERM

MCP73841

MCP73842

SENSE DRV

1 10

Advanced Single or Dual Cell Lithium-Ion/

Lithium-Polymer Charge Management Controllers

MCP73841/2/3/4

DS21823D-page 2  2003-2013 Microchip Technology Inc.

Functional Block Diagram

Charge

Termination

Comparator

Voltage Control

Amplifier

VREF

IREG/10 Precondition

Control

Charge_ok

Precon

VDD

Charge Current

Control Amplifier

–

VREF

Precondition

Comp.

VBAT

VSS

DRV

90 k

10 k

–

Charge

Current

Amplifier

VDD

SENSE

MCP73841 and MCP73842 Only

300 k

(825 k)

12 k

1 k

UVLO

Comparator

VUVLO

Temperature

Comparators

Bias and

Reference

Generator

VUVLO

VREF (1.2V)

Power-On

Delay VREF

Oscillator

Constant-Voltage/

Recharge Comp.

Charge Control,

Charge Timers,

And

Status Logic

Drv Stat 1

Charge_ok

IREG/10

THERM

TIMER

STAT1

THREF

100 k

50 k

74.21 k

0.79 k

150.02 k

5.15 k

(4.29 k)

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	MCP73844

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