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bq40z50 Datasheet Preview

bq40z50 Datasheet

Li-Ion Battery Pack Manager

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Not Recommended For New Designs
bq40z50
SLUSBS8A – DECEMBER 2013 – REVISED DECEMBER 2014
bq40z50 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager
1 Features
1 Fully Integrated 1-Series, 2-Series, 3-Series, and
4-Series Li-Ion or Li-Polymer Cell Battery Pack
Manager and Protection
• Next-Generation Patented Impedance Track™
Technology Accurately Measures Available
Charge in Li-Ion and Li-Polymer Batteries
• High Side N-CH Protection FET Drive
• Integrated Cell Balancing While Charging or At
Rest
• Full Array of Programmable Protection Features
– Voltage
– Current
– Temperature
– Charge Timeout
– CHG/DSG FETs
– AFE
• Sophisticated Charge Algorithms
– JEITA
– Enhanced Charging
– Adaptive Charging
– Cell Balancing
• Supports TURBO BOOST Mode
• Supports Battery Trip Point (BTP)
• Diagnostic Lifetime Data Monitor and Black Box
Recorder
• LED Display
• Supports Two-Wire SMBus v1.1 Interface
• SHA-1 Authentication
• Compact Package: 32-Lead QFN (RSM)
3 Description
The bq40z50 device, incorporating patented
Impedance Track™ technology, is a fully integrated,
single-chip, pack-based solution that provides a rich
array of features for gas gauging, protection, and
authentication for 1-series, 2-series, 3-series, and 4-
series cell Li-Ion and Li-Polymer battery packs.
Using its integrated high-performance analog
peripherals, the bq40z50 device measures and
maintains an accurate record of available capacity,
voltage, current, temperature, and other critical
parameters in Li-Ion or Li-Polymer batteries, and
reports this information to the system host controller
over an SMBus v1.1 compatible interface.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq40z50
VQFN (32)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
PACK+
OUT
VDD
GND
VC3
Cell 3
VC2 Cell 2
VC1
Cell 1
BAT
VC4
VC3
LEDCNTLA
LEDCNTLB
LEDCNTLC
VC2
DISP
VC1
SMBD
SMBC
PBI
VSS SRP SRN TS1 TS2 TS3 TS4 BTP PRES
SMBD
SMBC
PRES
BTP
2 Applications
• Notebook/Netbook PCs
• Medical and Test Equipment
• Portable Instrumentation
PACK–
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

bq40z50 Datasheet Preview

bq40z50 Datasheet

Li-Ion Battery Pack Manager

No Preview Available !

bq40z50
Not Recommended For New Designs
SLUSBS8A – DECEMBER 2013 – REVISED DECEMBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 7
7.1 Absolute Maximum Ratings ...................................... 7
7.2 ESD Ratings.............................................................. 8
7.3 Recommended Operating Conditions....................... 8
7.4 Thermal Information .................................................. 8
7.5 Electrical Characteristics: Supply Current................. 9
7.6 Electrical Characteristics: Power Supply Control...... 9
7.7 Electrical Characteristics: AFE Power-On Reset ...... 9
7.8 Electrical Characteristics: AFE Watchdog Reset and
Wake Timer................................................................ 9
7.9 Electrical Characteristics: Current Wake
Comparator .............................................................. 10
7.10 Electrical Characteristics: VC1, VC2, VC3, VC4,
BAT, PACK .............................................................. 10
7.11 Electrical Characteristics: SMBD, SMBC.............. 10
7.12 Electrical Characteristics: PRES, BTP_INT, DISP
................................................................................. 10
7.13 Electrical Characteristics: LEDCNTLA, LEDCNTLB,
LEDCNTLC ............................................................. 11
7.14 Electrical Characteristics: Coulomb Counter ........ 11
7.15 Electrical Characteristics: CC Digital Filter ........... 11
7.16 Electrical Characteristics: ADC ............................. 12
7.17 Electrical Characteristics: ADC Digital Filter ......... 12
7.18 Electrical Characteristics: CHG, DSG FET Drive . 12
7.19 Electrical Characteristics: PCHG FET Drive ......... 13
7.20 Electrical Characteristics: FUSE Drive.................. 13
7.21 Electrical Characteristics: Internal Temperature
Sensor...................................................................... 13
7.22 Electrical Characteristics: TS1, TS2, TS3, TS4 .... 14
7.23 Electrical Characteristics: PTC, PTCEN ............... 14
7.24 Electrical Characteristics: Internal 1.8-V LDO ..... 14
7.25 Electrical Characteristics: High-Frequency
Oscillator .................................................................. 14
7.26 Electrical Characteristics: Low-Frequency
Oscillator .................................................................. 15
7.27 Electrical Characteristics: Voltage Reference 1.... 15
7.28 Electrical Characteristics: Voltage Reference 2.... 15
7.29 Electrical Characteristics: Instruction Flash .......... 15
7.30 Electrical Characteristics: Data Flash ................... 15
7.31 Electrical Characteristics: OCD, SCC, SCD1, SCD2
Current Protection Thresholds ................................. 16
7.32 Timing Requirements: OCD, SCC, SCD1, SCD2
Current Protection Timing ........................................ 17
7.33 Timing Requirements: SMBus .............................. 17
7.34 Timing Requirements: SMBus XL......................... 18
7.35 Typical Characteristics ......................................... 19
8 Detailed Description ............................................ 22
8.1 Overview ................................................................. 22
8.2 Functional Block Diagram ...................................... 22
8.3 Feature Description................................................. 23
8.4 Device Functional Modes........................................ 26
9 Applications and Implementation ...................... 27
9.1 Application Information .......................................... 27
9.2 Typical Applications ................................................ 28
10 Power Supply Recommendations ..................... 41
11 Layout................................................................... 42
11.1 Layout Guidelines ................................................. 42
11.2 Layout Example .................................................... 44
12 Device and Documentation Support ................. 46
12.1 Documentation Support ........................................ 46
12.2 Trademarks ........................................................... 46
12.3 Electrostatic Discharge Caution ............................ 46
12.4 Glossary ................................................................ 46
13 Mechanical, Packaging, and Orderable
Information ........................................................... 46
4 Revision History
Changes from Original (December 2013) to Revision A
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
• Added Feature: Supports TURBO BOOST Mode .................................................................................................................. 1
• Added Feature: Supports Battery Trip Point (BTP) ............................................................................................................... 1
• Changed a Feature bullet from "Diagnostic Lifetime Data Monitor" to "Diagnostic Lifetime Data Monitor and Black
Box Recorder" ....................................................................................................................................................................... 1
• Updated second paragraph of the Description. Added text "The bq40z50 device supports TURBO BOOST mode . . . ".... 3
2 Submit Documentation Feedback
Product Folder Links: bq40z50
Copyright © 2013–2014, Texas Instruments Incorporated


Part Number bq40z50
Description Li-Ion Battery Pack Manager
Maker etcTI
Total Page 30 Pages
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