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| 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 Limit 3 Cell 3 24 Cell 2 23 Cell 1 22 Ground Cell 15 Program Current Sense Common 7 Charge Current Limit 6 Discharge Gate Drive Output 14 Charge Gate Drive Output 20 Charge Gate Drive Common 21 Cell Voltage 2 Discharge Voltage Threshold 4 Charge Voltage Threshold 5 MC33346 Cell Voltage Return 1 Data Output Ref/V/I/T 16 Reference Clock Output 19 Interrupt Output ORDERING INFORMATION Device MC33346DW MC33346DTB TA = -40 to +85C Operating Temperature Range Package SO-24L TSSOP-24 11 Temp 8 17 A-to-D Converter Period 18 VC Logic Supply 13 Address Input 10 Data Input 12 9 Charge Gate Turn Off/ Test Input This device contains 4760 active transistors. (c) Motorola, Inc. 1996 This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. Issue 1 MOTOROLA ANALOG IC DEVICE DATA 1 MC33346 OUTLINE DIMENSIONS DTB SUFFIX PLASTIC PACKAGE CASE 948H-01 (TSSOP-24) ISSUE O 24X K REF 0.10 (0.004) 0.15 (0.006) T U S M TU S V S 2X L/2 24 13 L PIN 1 IDENT. 1 12 B -U- 0.15 (0.006) T U S A -V- NOTES: 1 DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2 CONTROLLING DIMENSION: MILLIMETER. 3 DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4 DIMENSION B DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 (0.010) PER SIDE. 5 DIMENSION K DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE K DIMENSION AT MAXIMUM MATERIAL CONDITION. 6 TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 7 DIMENSION A AND B ARE TO BE DETERMINED AT DATUM PLANE -W-. DIM A B C D F G H J J1 K K1 L M MILLIMETERS MIN MAX 7.70 7.90 4.30 4.50 --- 1.20 0.05 0.15 0.50 0.75 0.65 BSC 0.27 0.37 0.09 0.20 0.09 0.16 0.19 0.30 0.19 0.25 6.40 BSC 0_ 8_ INCHES MIN MAX 0.303 0.311 0.169 0.177 --- 0.047 0.002 0.006 0.020 0.030 0.026 BSC 0.011 0.015 0.004 0.008 0.004 0.006 0.007 0.012 0.007 0.010 0.252 BSC 0_ 8_ C 0.10 (0.004) -T- SEATING PLANE D G H -W- DETAIL E N K K1 J1 0.25 (0.010) M SECTION N-N J 2 CCC CCC EE CCC EE N F DETAIL E MOTOROLA ANALOG IC DEVICE DATA MC33346 OUTLINE DIMENSIONS DW SUFFIX PLASTIC PACKAGE CASE 751E-04 (SO-24L) ISSUE E -A- 24 13 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS MIN MAX 15.25 15.54 7.40 7.60 2.35 2.65 0.35 0.49 0.41 0.90 1.27 BSC 0.23 0.32 0.13 0.29 0_ 8_ 10.05 10.55 0.25 0.75 INCHES MIN MAX 0.601 0.612 0.292 0.299 0.093 0.104 0.014 0.019 0.016 0.035 0.050 BSC 0.009 0.013 0.005 0.011 0_ 8_ 0.395 0.415 0.010 0.029 -B- 12X P 0.010 (0.25) M B M 1 12 24X D 0.010 (0.25) M J TA S B S F R C -T- SEATING PLANE X 45 _ M 22X G K DIM A B C D F G J K M P R 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 its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1-800-441-2447 or 602-303-5454 MFAX: RMFAX0@email.sps.mot.com - TOUCHTONE 602-244-6609 INTERNET: http://Design-NET.com JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 03-81-3521-8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298 MOTOROLA ANALOG IC DEVICE DATA *MC33346/D* 3 MC33346/D |
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