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MC33349N-4R1

Lithium Battery Protection Circuit for One Cell Battery Packs

ON Semiconductor 

MC33349

Lithium Battery Protection

Circuit for One Cell

Battery Packs

The MC33349 is a monolithic lithium battery protection circuit that

is designed to enhance the useful operating life of a one cell

rechargeable battery pack. Cell protection features consist of

internally trimmed charge and discharge voltage limits, discharge

current limit detection, and a low current standby mode when the cell

is discharged. This protection circuit requires a minimum number of

external components and is targeted for inclusion within the battery

pack.

• Internally Trimmed Charge and Discharge Voltage Limits

• Discharge Current Limit Detection

• Low Current Standby Mode when Cells are Discharged

• Dedicated for One Cell Applications

• Minimum Components for Inclusion within the Battery Pack

• Available in a Low Profile Surface Mount Package

Typical One Cell Smart Battery Pack

5

MC33349

6

4

1

32

http://onsemi.com

6

1

PLASTIC PACKAGE

N SUFFIX

CASE 1262

(SOT–23)

MARKING DIAGRAMS

1

v = Version code number

xx = Date code

PIN CONNECTIONS

DO 1

6 Gnd

P– 2

CO 3

5 Vcell

4 Ct

(Top View)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 10 of this data sheet.

© Semiconductor Components Industries, LLC, 2000

1

May, 2000 – Rev. 1

Publication Order Number:

MC33349/D

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