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MC33349N

Lithium battery protection circuit for one cell battery packs

Motorola => Freescale 

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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, charge and discharge current limit detection,

and a virtually zero current sleepmode state when the cell is discharged.

This protection circuit requires a minimum number of external components

and is targeted for inclusion within the battery pack. This MC33349 is

available in the SOT–23 6 lead surface mount package.

• Internally Trimmed Charge and Discharge Voltage Limits

• Charge and Discharge Current Limit Detection

• Virtually Zero Current Sleepmode State 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

Ordering Information shown on following page.

MC33349

LITHIUM BATTERY

PROTECTION CIRCUIT

FOR

ONE CELL

SMART BATTERY PACKS

SEMICONDUCTOR

TECHNICAL DATA

6

1

Typical One Cell Smart Battery Pack

N SUFFIX

PLASTIC PACKAGE

CASE 1262

(SOT–23)

0.1 µF

100 Ω

5

6

0.01 µF 4

0.1 µF

MC33349

1

32

1.0 kΩ

PIN CONNECTIONS

DO 1

6 Gnd

P– 2

CO 3

5 Vcell

4 Ct

(Top View)

This device contains 264 active transistors.

This document contains information on a product under development. Motorola reserves the

rigMhtOtoTcOhaRnOgeLoAr dAiscNonAtiLnuOeGthisICproDdEucVt IwCitEhoDutAnoTtAice.

© Motorola, Inc. 1998

Rev 0

1

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