JAJSL08H
september 2009 – february 2021
BQ24040
,
BQ24041
,
BQ24045
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Device Comparison
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 Operational Characteristics (Protection Circuits Waveforms)
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Power-Down or Undervoltage Lockout (UVLO)
8.3.2
Power-up
8.3.3
Sleep Mode
8.3.4
New Charge Cycle
8.3.5
Overvoltage-Protection (OVP) – Continuously Monitored
8.3.6
Power Good Indication ( PG)
8.3.7
CHG Terminal Indication
8.4
Device Functional Modes
8.4.1
CHG and PG LED Pull-up Source
8.4.2
Auto Start-up (BQ24041)
8.4.3
IN-DPM (VIN-DPM or IN-DPM)
8.4.4
OUT
8.4.5
ISET
8.4.6
PRE_TERM – Pre-Charge and Termination Programmable Threshold, BQ24040/5
8.4.7
ISET2
8.4.8
TS (BQ24040/5)
8.4.9
Termination and Timer Disable Mode (TTDM) - TS Terminal High
8.4.10
Timers, BQ24040 and BQ24045 only
8.4.11
Termination
8.4.12
Battery Detect Routine
8.4.13
Refresh Threshold
8.4.14
Starting a Charge on a Full Battery
9
Application and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
Typical Application: BQ24040 and BQ24045
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Calculations
9.2.1.2.1.1
Program the Fast Charge Current, ISET:
9.2.1.2.1.2
Program the Termination Current Threshold, ITERM:
9.2.1.2.1.3
TS Function (BQ24040)
9.2.1.2.1.4
CHG and PG
9.2.1.2.2
Selecting In and Out Terminal Capacitors
9.2.1.3
Application Curves
9.2.2
Typical Application Circuit: BQ24041, with ASI and ASO
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
11.3
Thermal Considerations
11.3.1
Leakage Current Effects on Battery Capacity
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
Documentation Support
12.2.1
Related Documentation
12.3
ドキュメントの更新通知を受け取る方法
12.4
サポート・リソース
12.5
Trademarks
12.6
静電気放電に関する注意事項
12.7
用語集
13
Mechanical, Packaging, and Orderable Information
9.2
Typical Applications