JAJS528B
December 2010 – November 2023
TPS53315
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
D-CAP™ Integrated Circuit with Adaptive On-Time
6.3.2
Small Signal Model
6.3.3
Ramp Signal
6.3.4
Auto-Skip Eco-mode Light Load Operation
6.3.5
Adaptive Zero Crossing
6.3.6
Forced Continuous Conduction Mode
6.3.7
Power Good
6.3.8
Current Sense and Overcurrent Protection
6.3.9
Overvoltage and Undervoltage Protection
6.3.10
UVLO Protection
6.3.11
Thermal Shutdown
6.4
Device Functional Modes
6.4.1
Enable and Soft Start
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Typical Application Circuit Diagram
7.2.1.1
Design Requirements
7.2.1.2
Detailed Design Procedure
7.2.1.2.1
Step 1: Select Operation Mode and Soft-Start Time
7.2.1.2.2
Step 2: Select Switching Frequency
7.2.1.2.3
Step 3: Select the Inductance
7.2.1.2.4
Step 4: Select Output Capacitors
7.2.1.2.5
Step 5: Determine the Voltage-Divider Resistance (R1 and R2)
7.2.1.2.6
Step 6: Select the Overcurrent Resistance (RTRIP)
7.2.1.3
Application Curves
7.2.2
Typical Application Circuit Diagram With Ceramic Output Capacitors
7.2.2.1
Design Requirements
7.2.2.2
Detailed Design Procedure
7.2.2.2.1
Step 1: Select Operation Mode and Soft-Start Time
7.2.2.2.2
Step 2: Select Switching Frequency
7.2.2.2.3
Step 3: Select the Inductance
7.2.2.2.4
Step 4: Select Output Capacitance for Ceramic Capacitors
7.2.2.2.5
Step 5: Select the Overcurrent Setting Resistance (RTRIP)
7.2.2.3
External Component Selection When Using All Ceramic Output Capacitors
7.2.2.4
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
7.4.2.1
Thermal Considerations
8
Device and Documentation Support
8.1
ドキュメントの更新通知を受け取る方法
8.2
サポート・リソース
8.3
Trademarks
8.4
静電気放電に関する注意事項
8.5
用語集
9
Revision History
10
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)
RGF|40
MPQF173F
サーマルパッド・メカニカル・データ
RGF|40
QFND162J
発注情報
jajs528b_oa
jajs528b_pm
7.4.2
Layout Example
Figure 7-17
Layout Recommendation