mc33346dw Freescale Semiconductor, Inc, mc33346dw Datasheet

mc33346dw

Manufacturer Part Number

mc33346dw

Description

Lithium Battery Protection Circuit Three Four Cell Smart Battery Packs

Manufacturer

Freescale Semiconductor, Inc

Datasheet

1.MC33346DW.pdf (3 pages)

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Lithium Battery Protection

Circuit for Three or Four Cell

Battery Packs

designed to enhance the useful operating life of three or four cell

rechargeable battery packs. Cell protection features consist of

independently programmable charge and discharge limits for both voltage

and current with a delayed current shutdown, cell voltage balancing with

on–chip balancing resistors, and virtually zero current sleepmode state

when the cells are discharged. Additional features consists of a six wire

microcontroller interface bus that can selectively provide a pulse output that

represents the internal reference voltage, cell voltage, cell current and

temperature, as well as control the states of four internal balancing and two

external MOSFET switches. A microcontroller time reference output is

available for gas gauge implementation. This protection circuit requires a

minimum number of external components and is targeted for inclusion within

the battery pack. The MC33346 is available in standard and low profile 24

lead surface mount packages.

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

right to change or discontinue this product without notice.

MOTOROLA ANALOG IC DEVICE DATA

MC33346DW

MC33346DTB

Discharge Limits for Both Voltage and

Current

Resistors

and Temperature

Gas Gauging

Cells are Discharged

Applications

within the Battery Pack

Packages

The MC33346 is a monolithic lithium battery protection circuit that is

Independently Programmable Charge and

Delayed Current Shutdown

Cell Voltage Balancing with On–Chip

Six Wire Microcontroller Interface Bus

Data Output for Reference, Voltage, Current,

Microcontroller Time Reference Output for

Virtually Zero Current Sleepmode State when

Programmable for Three or Four Cell

Minimum External Components for Inclusion

Available in Low Profile Surface Mount

Device

ORDERING INFORMATION

Temperature Range

T A = –40 to +85 C

Operating

TSSOP–24

Package

SO–24L

Current Limit

Cell 4/V CC /

Discharge

Cell

Program

Ground

Cell 3

Cell 2

Cell 1

Temp

Typical Four Cell Smart Battery Pack

This device contains 4760 active transistors.

Current

Sense

Common

A–to–D

Converter

Period

Motorola, Inc. 1996

Charge

Current

Limit

V C

Logic

Supply

SMART BATTERY PACKS

Order this document from Analog Marketing

MC33346

THREE OR FOUR CELL

PROTECTION CIRCUIT

Discharge

Gate Drive

Output

LITHIUM BATTERY

MC33346

Address

Input

Charge

Gate Drive

Output

Data

Input

FOR

PLASTIC PACKAGE

Charge Gate

Turn Off/

Test Input

Charge

Gate Drive

Common

Cell Voltage

Discharge Voltage

Threshold

Charge Voltage

Threshold

Cell Voltage

Return

Data Output

Ref/V/I/T

Reference Clock Output

Interrupt Output

DTB SUFFIX

(TSSOP–24)

DW SUFFIX

CASE 948H

CASE 751E

(SO–24L)

Issue 1

Related parts for mc33346dw

mc33346dw Summary of contents

Page 1

... Available in Low Profile Surface Mount Packages ORDERING INFORMATION Operating Temperature Range Device Package MC33346DW SO–24L – –40 to +85 C MC33346DTB TSSOP–24 This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. ...

Page 2

L PIN 1 IDENT. 0.15 (0.006 0.10 (0.004) –T– SEATING D PLANE K K1 É É Ç Ç Ç J1 É É Ç Ç Ç Ç Ç Ç ...

Page 3

D 24X 0.010 (0.25 –T– SEATING PLANE G 22X Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of ...

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