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BQ297xx Cost-Effective Voltage and Current Protection Integrated Circuit for Single-Cell Li-Ion and Li-Polymer Batteries
SLUSBU9I
March 2014 – August 2024
BQ2970
,
BQ2971
,
BQ2972
,
BQ2973
PRODUCTION DATA
CONTENTS
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BQ297xx Cost-Effective Voltage and Current Protection Integrated Circuit for Single-Cell Li-Ion and Li-Polymer Batteries
1
1
Features
2
Applications
3
Description
4
Device Comparison Table
5
Pin Configuration and Functions
5.1
Pin Descriptions
5.1.1
Supply Input: BAT
5.1.2
Cell Negative Connection: VSS
5.1.3
Voltage Sense Node: V–
5.1.4
Discharge FET Gate Drive Output: DOUT
5.1.5
Charge FET Gate Drive Output: COUT
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
DC Characteristics
6.6
Programmable Fault Detection Thresholds
6.7
Programmable Fault Detection Timer Ranges
6.8
Typical Characteristics
7
Parameter Measurement Information
7.1
Timing Charts
7.2
Test Circuits
7.3
Test Circuit Diagrams
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.4
Device Functional Modes
8.4.1
Normal Operation
8.4.2
Overcharge Status
8.4.3
Over-Discharge Status
8.4.4
Discharge Overcurrent Status (Discharge Overcurrent, Load Short-Circuit)
8.4.5
Charge Overcurrent Status
8.4.6
0V Charging Function Enabled
8.4.7
0V Charging Inhibit Function
8.4.8
Delay Circuit
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.3
Application Performance Plots
9.3
Power Supply Recommendations
9.4
Layout
9.4.1
Layout Guidelines
9.4.2
Layout Example
10
Device and Documentation Support
10.1
Related Documentation
10.2
Support Resources
10.3
Trademarks
10.4
Electrostatic Discharge Caution
10.5
Glossary
11
Revision History
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DSE|6
MPDS287A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
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Data Sheet
BQ297xx Cost-Effective Voltage and Current Protection Integrated Circuit for Single-Cell Li-Ion and Li-Polymer Batteries
