View MC33349N-1_117602.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Order this document by MC33349PP/D
Product Preview
MC33349
LITHIUM BATTERY PROTECTION CIRCUIT FOR ONE CELL SMART BATTERY PACKS
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
* * * * *
SEMICONDUCTOR TECHNICAL DATA
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.
6 1
Typical One Cell Smart Battery Pack
N SUFFIX PLASTIC PACKAGE CASE 1262 (SOT-23)
0.1 F 5
100
PIN CONNECTIONS
MC33349 DO
6 0.01 F 4 1 0.1 F 3 2
1 2 3 (Top View)
6 Gnd 5 Vcell 4 Ct
P- CO
1.0 k
This device contains 264 active transistors.
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. (c) Motorola, Inc. 1998 Rev 0
MOTOROLA ANALOG IC DEVICE DATA
1
MC33349
ORDERING INFORMATION
Charge Overvoltage Threshold (V) 4.2 4.2 4.25 4.25 4.3 200 MC33349N-6 MC33349N-7 MC33349N-8 MC33349N-9 MC33349N-10 4.3 4.35 4.35 4.65 4.65 2.3 23 75 150 75 150 75 Charge Overvoltage Hysteresis (mV) Discharge Undervoltage Threshold (V) Current Limit Threshold (mV) 150 75 150 75 150 40 TA = -40 to 85C SOT-23 SOT 23 Operating Temperature Range
Device MC33349N-1 MC33349N-2 MC33349N-3 MC33349N-4 MC33349N-5
Package
MAXIMUM RATINGS
AA A AA AAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAA AA AA A A A AAAAAAAAAAAAAAAAAAAAAAAA A AA AA A AA AAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAA A AA AA AAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAA
Thermal Resistance, Junction-to-Air N Suffix, SOT-23 Plastic Package, Case 1262 Operating Junction Temperature (Note 1) Storage Temperature RJA TJ C/W C C TBD -40 to 85 Tstg -55 to 125 Input Voltage Discharge Gate Drive Output (Pin 1) to Gnd (Pin 6) Charge Gate Drive Common/Current Limit (Pin 2) to V cell (Pin 5) Charge Gate Drive Output (Pin 3) to Vcell (Pin 5) Overvoltage Delay Capacitor (Pin 4) to Gnd (Pin 6) Cell Voltage (Pin 5) to Gnd (Pin 6) VIR V 5.0 to -1.0 1.0 to -18 1.0 to -18 5.0 to -1.0 5.0 to -1.0
Ratings
Symbol
Value
Unit
2
MOTOROLA ANALOG IC DEVICE DATA
MC33349
ELECTRICAL CHARACTERISTICS (Ct = 0.01 F, TA = 25C, for min/max values TA is the operating junction temperature range
that applies, unless otherwise noted.) Characteristic VOLTAGE SENSING Symbol Min Typ Max Unit
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA AAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAA
Cell Charging Cutoff (Pin 5 to Pin 6) Overvoltage Threshold, VCell Increasing -1, -3 Suffix -2, -4 Suffix Overvoltage Hysteresis VCell Decreasing Vth(OV) V VH - - - 4.35 4.25 200 - - - mV V Cell Discharging Cutoff (Pin 5 to Pin 6) Undervoltage Threshold, VCell Decreasing -1, -3 Suffix -2, -4 Suffix Vth(UV) - - - - - - - 2.30 2.28 20 75 13 - - - - - - - Input Bias Current During Cell Voltage Sample (Pin 5) Overvoltage Delay Time (Vcell = 4.5 V) Unervoltage Delay Time (Vcell = 2.1 V) Cell Voltage Sampling Period IIIB A t(ovd) t(uvd) ms ms ms ms t(smpl) t(rep) 2.0 26 Cell Voltage Sampling Repitition Period CURRENT SENSING Discharge/Charge Current Limit (Pin 2 to Pin 6) Discharge Threshold Voltage -1, -2 Suffix -3, -4 Suffix Discharge Current Hysteresis Charge Threshold Voltage -1. -2 Suffix -3, -4 Suffix Charge Current Hysteresis Vth(dschg) mV DCH Vth(chg) - - - - - - - - 150 75 50 - - - - - - - - % mV CCH t(ccld) t(dcld) Volc -150 -75 25 10 2.0 % s s V V V V
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A AA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAA AAA A A A AAAAAAAAAAAAAAAAAAA AA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA A AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
OUTPUTS Charge Gate Drive Output Low (Pin 3 to Pin 2 @ IO = 50 A) - - - - 0.2 0.1 0.2 0.2 - - - - Charge Gate Drive Output High (Pin 5 to Pin 3 @ IO = -50 A) Vohc Vold Discharge Gate Drive Output Low (Pin 1 to Pin 6 @ IO = 50 A) Discharge Gate Drive Output High (Pin 5 to Pin 1 @ IO = -50 A) Vohd TOTAL DEVICE Average Cell Current Operating (Vcell = 3.9 V) Sleepmode (Vcell = 2.0 V) Icell - - - 8.5 4.0 1.5 - - - A nA V Minimum Operating Cell Voltage Vcell
Current Limit Delay Time (1.0 nF load @ CO & DO; to VDD/2) Charge Gate Drive Output (Pin 3) Discharge Gate Drive Output (Pin 1)
MOTOROLA ANALOG IC DEVICE DATA
3
MC33349
PIN FUNCTION DESCRIPTION
A AAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
1 2 DO P- This output connects to the gate of discharge MOSFET switch Q2 allowing it to enable or disable battery pack discharging. This is a multifunction pin that is used to monitor cell charge and discharge current and to provide a gate turn-off path for charge switch Q1. A current limit fault is set when the combined voltage drop of charge switch Q1 and discharge switch Q2 exceeds the discharge current limit threshold voltage, Vth(dschg) above Pin 6 caused by a load; or charge current limit threshold voltage, Vth(chg) below Pin 6 caused by a charger. This output connects to the gate of charge MOSFET switch Q1 allowing it to enable or disable battery pack charging. An external capacitor connects between this pin and ground (Pin 6) to set the sample timer frequency and overvoltage delay time. 3 4 5 CO Ct Vcell This input connects to the positive terminal of the cell for voltage monitoring and provides operating bias for the integrated circuit. Internally, the Cell Voltage Sample Switch periodically applies this voltage to a resistor divider where it is compared by the Cell Voltage Detector to an internal reference. This is the ground pin of the IC. 6 Gnd
Pin
Symbol
Description
4
MOTOROLA ANALOG IC DEVICE DATA
MC33349
AAA A A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A AA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA AAAAAAAAAAAAAAAAAA AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAA A
Outputs MOSFET Switches Input Conditions Cell Status Circuit Operation Battery Pack Status Charge Q1 Discharge Q2 CELL CHARGING/DISCHARGING Storage or Nominal Operation: No current or voltage faults Both Charge MOSFET Q1 and Discharge MOSFET Q2 are on. The battery pack is available for charging or discharging. On On CELL CHARGING FAULT/RESET Charge Voltage Limit Fault: VPin 5 Vth(OV) for two consecutive samples Charge MOSFET Q1 is latched off and the cell is disconnected from the charging source. An internal current source pull-up is applied to divider resistors R1 and R2 creating a hysteresis voltage of VH. The battery pack is available for discharging. Discharge current limit protection is disabled. On to Off On Charge Voltage Limit Reset: VPin 5 < (Vth(OV) - VH) for one sample, or VPin 2 > Vth(dschg) Charge MOSFET Q1 will turn on when the voltage across the cell falls sufficiently to overcome hysteresis voltage VH, or when a load is applied to the battery pack. Charge MOSFET Q1 is latched off and the cell is disconnected from the charger. Q1 will remain in the off state as long as VPin 6 exceeds VPin 2 by Vth(chg). The battery pack is available for discharging. Discharge current limit is disabled. The Sense Enable circuit will reset and turn on charge MOSFET Q1 when VPin 6 no longer exceeds VPin 2 by Vth(chg). This can be accomplished by either disconnecting the charger from the battery pack, or by connecting the battery pack to a load. Off to On On Charge Current Limit Fault: VPin 2 (VPin 6 + Vth(chg)) On to Off On Charge Current Limit Reset: VPin 6 - VPin 2 < Vth(chg) Off to On On
PROTECTION CIRCUIT OPERATING MODE TABLE
AAA A A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAA AA AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAA AAAA A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
CELL DISCHARGING FAULT/RESET Discharge Current Limit Fault: VPin 2 (VPin 6 + Vth(dschg)) Discharge MOSFET Q2 is latched off and the cell is disconnected from the load. Q2 will remain in the off state as long as VPin 2 exceeds VPin 6 by Vth(dschg). The battery pack is available for charging. Charge current limit protection is disabled. The Sense Enable circuit will reset and turn on discharge MOSFET Q2 when VPin 2 no longer exceeds VPin 5 by Vth(dschg). This can be accomplished by either disconnecting the load from the battery pack, or by connecting the battery pack to the charger. Discharge MOSFET Q2 is latched off, the cell is disconnected from the load, and the protection circuit enters a low current sleepmode state. The battery pack is available for charging. Charge current limit protection is disabled. On On to Off Discharge Current Limit Reset: VPin 2 - VPin 6 < Vth(dschg) On Off to On Discharge Voltage Limit Fault: VPin 5 Vth(UV) for one sample On On to Off Discharge Voltage Limit Reset: VPin 6 > (VPin 2 + 0.6 V) The Sense Enable circuit will reset and turn on discharge MOSFET Q2 when VPin 6 exceeds VPin 2 by 0.6 V. This can be accomplished by connecting the battery pack to the charger. On Off to On TEST MODE - PIN 4/PIN 5 SHORT Continuous Charge Voltage Limit Comparator VPin 4 = VPin 5 = Vcell < Vth(chg) VPin 4 = VPin 5 = Vcell > Vth(chg) This condition occurs if Pin 4 and Pin 5 are accidently shorted together or purposely connected for rapid Charge Voltgae Limit Testing. MOSFET Q1 On to Off is not delayed and no hysteresis is required for reset. On Off On On
AAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
FAULTY CELL Discharge Voltage Limit Fault: VPin 5 1.5 V This condition can happen if the cell is defective (<1.5 V) or if a momentary discharge current causes the cell voltage to fall below Vth(UV) before a sample is taken. Off Off
MOTOROLA ANALOG IC DEVICE DATA
5
MC33349
OUTLINE DIMENSIONS
N SUFFIX PLASTIC PACKAGE CASE 1262-01 (SOT-23) ISSUE O E
PIN 1 INK MARK IDENTIFIER
0.20
M
CB
M
0.05 C
NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSION D DOES NOT INCLUDE FLASH OR PROTRUSIONS. FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.23 PER SIDE. 4. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 5. DIMENSIONS D AND E1 ARE TO BE DETERMINED AT DATUM PLANE H. DIM A A1 b b1 c c1 D E E1 e e1 L MILLIMETERS MIN MAX 0.90 1.45 0.00 0.15 0.35 0.50 0.35 0.45 0.09 0.20 0.09 0.15 2.80 3.00 2.60 3.00 1.50 1.75
0.95 1.90
1
e
A
6
D
5
3
A
B
b c1 c
q
H L
6
CCCCC EEEEE CCCCC EEEEE
0.10
E1
A1 A
b
4
M
CA
A
S
B
2
e1
S
b1
q
0.25 0_
0.55 10 _
SECTION A-A
MOTOROLA ANALOG IC DEVICE DATA
MC33349
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.
MOTOROLA ANALOG IC DEVICE DATA
7
MC33349
Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1-303-675-2140 or 1-800-441-2447 Customer Focus Center: 1-800-521-6274 MfaxTM: RMFAX0@email.sps.mot.com - TOUCHTONE 1-602-244-6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, Motorola Fax Back System - US & Canada ONLY 1-800-774-1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298 - http://sps.motorola.com/mfax/ HOME PAGE: http://motorola.com/sps/ JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 141, 4-32-1 Nishi-Gotanda, Shagawa-ku, Tokyo, Japan. 03-5487-8488
8
MC33349PP/D MOTOROLA ANALOG IC DEVICE DATA

▲Up To Search▲

Price & Availability of MC33349N-1

	To Download MC33349N-1 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .