SLUSFD7
April 2024
BQ25308
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Description (continued)
5
Device Comparison Table
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Device Power Up
8.3.1.1
Power-On-Reset (POR)
8.3.1.2
REGN Regulator Power Up
8.3.1.3
Charger Power Up
8.3.1.4
Charger Enable and Disable by EN Pin
8.3.1.5
Device Unplugged From Input Source
8.3.2
Battery Charging Management
8.3.2.1
Battery Charging Profile
8.3.2.2
Battery Charging Profile for LiFePO4
8.3.2.3
Precharge
8.3.2.4
Charging Termination
8.3.2.5
Battery Recharge
8.3.2.6
Charging Safety Timer
8.3.2.7
Thermistor Temperature Monitoring
8.3.3
Charging Status Indicator (STAT)
8.3.4
Protections
8.3.4.1
Voltage and Current Monitoring
8.3.4.1.1
Input Over-Voltage Protection
8.3.4.1.2
Input Voltage Dynamic Power Management (VINDPM)
8.3.4.1.3
Input Current Limit
8.3.4.1.4
Cycle-by-Cycle Current Limit
8.3.4.2
Thermal Regulation and Thermal Shutdown
8.3.4.3
Battery Protection
8.3.4.3.1
Battery Over-Voltage Protection (VBAT_OVP)
8.3.4.3.2
Dead Battery Charge Inhibit
8.3.4.4
ICHG Pin Open and Short Protection
8.4
Device Functional Modes
8.4.1
Disable Mode, HiZ Mode, Sleep Mode, Charge Mode, Termination Mode, and Fault Mode
9
Application and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
Typical Application
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Charge Voltage Settings
9.2.1.2.2
Charge Current Setting
9.2.1.2.3
Inductor Selection
9.2.1.2.4
Input Capacitor
9.2.1.2.5
Output Capacitor
9.2.1.3
Application Curves
9.2.2
Typical Application with External Power Path
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Third-Party Products Disclaimer
12.2
Receiving Notification of Documentation Updates
12.3
Support Resources
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Revision History
14
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
デバイスごとのパッケージ図は、PDF版データシートをご参照ください。
メカニカル・データ(パッケージ|ピン)
RTE|16
サーマルパッド・メカニカル・データ
RTE|16
QFND525B
発注情報
slusfd7_oa
slusfd7_pm
Data Sheet
BQ25308
Standalone
1-Cell,
17V,
3.0A
Battery Charger
with Dead Battery Charge Inhibit