MC33349 Datasheet, PDF (1/8 Pages) ON Semiconductor – Lithium Battery Protection Circuit for One Cell Battery Packs

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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
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© Motorola, Inc. 1998
Rev 0
1