JAJSU62
April 2024
BQ25308
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
概要 (続き)
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
サード・パーティ製品に関する免責事項
12.2
ドキュメントの更新通知を受け取る方法
12.3
サポート・リソース
12.4
Trademarks
12.5
静電気放電に関する注意事項
12.6
用語集
13
Revision History
14
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
RTE|16
MPQF149D
サーマルパッド・メカニカル・データ
RTE|16
QFND525B
発注情報
jajsu62_oa
9.2.2.2
Detailed Design Procedure
For detailed design procedure, see
Section 9.2.1.2
.