JAJS340F
November 2008 – August 2016
TPS2552
,
TPS2552-1
,
TPS2553
,
TPS2553-1
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
4
改訂履歴
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
Typical Characteristics
8
Parameter Measurement Information
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Overcurrent Conditions
9.3.2
Reverse-Voltage Protection
9.3.3
FAULT Response
9.3.4
Undervoltage Lockout (UVLO)
9.3.5
ENABLE (EN or EN)
9.3.6
Thermal Sense
9.4
Device Functional Modes
9.5
Programming
9.5.1
Programming the Current-Limit Threshold
10
Application and Implementation
10.1
Application Information
10.1.1
Constant-Current vs Latch-Off Operation and Impact on Output Voltage
10.2
Typical Applications
10.2.1
Two-Level Current-Limit Circuit
10.2.1.1
Design Requirements
10.2.1.2
Detailed Design Procedures
10.2.1.2.1
Designing Above a Minimum Current Limit
10.2.1.2.2
Designing Below a Maximum Current Limit
10.2.1.2.3
Accounting for Resistor Tolerance
10.2.1.2.4
Input and Output Capacitance
10.2.1.3
Application Curves
10.2.2
Auto-Retry Functionality
10.2.2.1
Design Requirements
10.2.2.2
Detailed Design Procedure
10.2.3
Typical Application as USB Power Switch
10.2.3.1
Design Requirements
10.2.3.1.1
USB Power-Distribution Requirements
10.2.3.2
Detailed Design Procedure
10.2.3.2.1
Universal Serial Bus (USB) Power-Distribution Requirements
11
Power Supply Recommendations
11.1
Self-Powered and Bus-Powered Hubs
11.2
Low-Power Bus-Powered and High-Power Bus-Powered Functions
11.3
Power Dissipation and Junction Temperature
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
デバイスおよびドキュメントのサポート
13.1
デバイス・サポート
13.2
関連リンク
13.3
ドキュメントの更新通知を受け取る方法
13.4
コミュニティ・リソース
13.5
商標
13.6
静電気放電に関する注意事項
13.7
Glossary
14
メカニカル、パッケージ、および注文情報
8 Parameter Measurement Information
Figure 19. Typical Characteristics Reference Schematic
Figure 20. Test Circuit and Voltage Waveforms
Figure 21. Response Time to Short-Circuit Waveform
Figure 22. Output Voltage vs Current-Limit Threshold