BQ4050 Datasheet, PDF (2/53 Pages) Texas Instruments – CEDV Gas Gauge and Protection Solution

bq4050
SLUSC67A – MARCH 2016 – REVISED MARCH 2016
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 7
6.1 Absolute Maximum Ratings ...................................... 7
6.2 ESD Ratings.............................................................. 7
6.3 Recommended Operating Conditions....................... 8
6.4 Thermal Information .................................................. 8
6.5 Electrical Characteristics: Supply Current................. 8
6.6 Electrical Characteristics: Power Supply Control...... 9
6.7 Electrical Characteristics: AFE Power-On Reset ...... 9
6.8 Electrical Characteristics: AFE Watchdog Reset and
Wake Timer................................................................ 9
6.9 Electrical Characteristics: Current Wake
Comparator ................................................................ 9
6.10 Electrical Characteristics: VC1, VC2, VC3, VC4,
BAT, PACK .............................................................. 10
6.11 Electrical Characteristics: SMBD, SMBC.............. 10
6.12 Electrical Characteristics: PRES, BTP_INT, DISP
................................................................................. 10
6.13 Electrical Characteristics: LEDCNTLA, LEDCNTLB,
LEDCNTLC ............................................................. 11
6.14 Electrical Characteristics: Coulomb Counter ........ 11
6.15 Electrical Characteristics: CC Digital Filter ........... 11
6.16 Electrical Characteristics: ADC ............................. 12
6.17 Electrical Characteristics: ADC Digital Filter ......... 12
6.18 Electrical Characteristics: CHG, DSG FET Drive . 12
6.19 Electrical Characteristics: PCHG FET Drive ......... 13
6.20 Electrical Characteristics: FUSE Drive.................. 13
6.21 Electrical Characteristics: Internal Temperature
Sensor...................................................................... 13
6.22 Electrical Characteristics: TS1, TS2, TS3, TS4 .... 14
6.23 Electrical Characteristics: PTC, PTCEN ............... 14
6.24 Electrical Characteristics: Internal 1.8-V LDO....... 14
6.25 Electrical Characteristics: High-Frequency
Oscillator .................................................................. 14
6.26 Electrical Characteristics: Low-Frequency
Oscillator .................................................................. 15
6.27 Electrical Characteristics: Voltage Reference 1.... 15
6.28 Electrical Characteristics: Voltage Reference 2.... 15
6.29 Electrical Characteristics: Instruction Flash .......... 15
6.30 Electrical Characteristics: Data Flash ................... 15
6.31 Electrical Characteristics: OCD, SCC, SCD1, SCD2
Current Protection Thresholds ................................. 16
6.32 Timing Requirements: OCD, SCC, SCD1, SCD2
Current Protection Timing ........................................ 17
6.33 Timing Requirements: SMBus .............................. 17
6.34 Timing Requirements: SMBus XL......................... 18
6.35 Typical Characteristics ......................................... 19
7 Detailed Description ............................................ 22
7.1 Overview ................................................................. 22
7.2 Functional Block Diagram ...................................... 23
7.3 Feature Description................................................. 24
7.4 Device Functional Modes........................................ 27
8 Applications and Implementation ...................... 28
8.1 Application Information .......................................... 28
8.2 Typical Applications ................................................ 29
9 Power Supply Recommendations...................... 42
10 Layout................................................................... 42
10.1 Layout Guidelines ................................................. 42
10.2 Layout Example .................................................... 45
11 Device and Documentation Support ................. 47
11.1 Documentation Support ........................................ 47
11.2 Community Resources.......................................... 47
11.3 Trademarks ........................................................... 47
11.4 Electrostatic Discharge Caution ............................ 47
11.5 Glossary ................................................................ 47
12 Mechanical, Packaging, and Orderable
Information ........................................................... 47
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
DATE
March 2016
REVISION
A
NOTES
PRODUCT PREVIEW to Production Data
2
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