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MCP73833/4

Stand-Alone Linear Li-Ion / Li-Polymer Charge

Management Controller

Features

鈥?Complete Linear Charge Management Controller

- Integrated Pass Transistor

- Integrated Current Sense

- Integrated Reverse Discharge Protection

鈥?Constant Current / Constant Voltage Operation

with Thermal Regulation

鈥?High Accuracy Preset Voltage Regulation:

- 4.2V, 4.35V, 4.4V, or 4.5V, + 0.75%

鈥?Programmable Charge Current: 1A Maximum

鈥?Preconditioning of Deeply Depleted Cells

- Selectable Current Ratio

- Selectable Voltage Threshold

鈥?Automatic End-of-Charge Control

- Selectable Current Threshold

- Selectable Safety Time Period

鈥?Automatic Recharge

Description

The MCP73833/4 is a highly advanced linear charge

management controller for use in space-limited, cost

sensitive applications. The MCP73833/4 is available in

a 10-Lead, 3mm x 3mm DFN package or a 10-Lead,

MSOP package. Along with its small physical size, the

low number of external components required makes

the MCP73833/4 ideally suited for portable applica-

tions. For applications charging from a USB port, the

MCP73833/4 can adhere to all the specifications

governing the USB power bus.

The MCP73833/4 employs a constant current/constant

voltage charge algorithm with selectable precondition-

ing and charge termination. The constant voltage

regulation is fixed with four available options: 4.20V,

4.35V, 4.40V, or 4.50V, to accomodate new, emerging

battery charging requirements. The constant current

value is set with one external resistor. The

MCP73833/4 limits the charge current based on die

temperature during high power or high ambient condi-

tions. This thermal regulation optimizes the charge

cycle time while maintaining device reliability.

Several options are available for the preconditioning

threshold, preconditioning current value, charge

termination value, and automatic recharge threshold.

The preconditioning value and charge termination

value are set as a ratio, or percentage, of the

programmed constant current value. Preconditioning

can be set

to 100%

. Refer to

Section 1.0 鈥淓lectrical

Characteristics鈥?/span>

for available options and the

鈥淧roduct Indentification System鈥?/div>

for standard

options.

The MCP73833/4 is fully specified over the ambient

temperature range of -40掳C to +85掳C.

- Selectable Voltage Threshold

鈥?/div>

Two Charge Status Outputs

Cell Temperature Monitor

Low-Dropout Linear Regulator Mode

Automatic Power-Down when Input Power

Removed

鈥?Under Voltage Lockout

鈥?Numerous Selectable Options Available for a

Variety of Applications:

- Refer to

Section 1.0 鈥淓lectrical

Characteristics鈥?/span>

for Selectable Options

- Refer to the

鈥漃roduct Identification

System鈥?/span>

for Standard Options

鈥?Available Packages:

- 3mm x 3mm DFN-10

- MSOP-10

Package Types

DFN-10

V

DD

1

V

DD

2

STAT1 3

STAT2 4

V

SS

5

10 V

BAT

9 V

BAT

8 THERM

7 PG(TE)

6 PROG

10

9

8

7

6

V

BAT

V

BAT

THERM

PG(TE)

PROG

Applications

鈥?/div>

Lithium-Ion / Lithium-Polymer Battery Chargers

Personal Data Assistants

Cellular Telephones

Digital Cameras

MP3 Players

Bluetooth Headsets

USB Chargers

MSOP-10

V

DD

V

DD

STAT1

STAT2

V

SS

1

2

3

4

5

漏

2006 Microchip Technology Inc.

DS22005A-page 1

型号

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描述

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