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MC33346

Motorola
Part Number MC33346
Manufacturer Motorola
Description LITHIUM BATTERY PROTECTION
Published Aug 28, 2005
Detailed Description Order this document from Analog Marketing Product Preview MC33346 LITHIUM BATTERY PROTECTION CIRCUIT FOR THREE OR FOUR...
Datasheet PDF File MC33346 PDF File

MC33346
MC33346


Overview
Order this document from Analog Marketing Product Preview MC33346 LITHIUM BATTERY PROTECTION CIRCUIT FOR THREE OR FOUR CELL SMART BATTERY PACKS Lithium Battery Protection Circuit for Three or Four Cell Battery Packs The MC33346 is a monolithic lithium battery protection circuit that is 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.
24 1 DW SUFFIX PLASTIC PACKAGE CASE 751E (SO–24L) 24 1 DTB SUFFIX PLASTIC PACKAGE CASE 948H (TSSOP–24) • • • • • • • • • • Independently Programmable Charge and Discharge Limits for Both Voltage and Current Delayed Current Shutdown Cell Voltage Balancing with On–Chip Resistors Six Wire Microcontroller Interface Bus Data Output for Reference, Voltage, Current, and Temperature Microcontroller Time Reference Output for Gas Gauging Virtually Zero Current Sleepmode State when Cells are Discharged Programmable for Three or Four Cell Applications Minimum External Components for Inclusion within the Battery Pack Available in Low Profile Surface Mount Packages Typical Four Cell Smart Battery Pack Cell 4/VCC/ Discharge Current...


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