JAJSOM3A
may 2022 – march 2023
TPS62903-Q1
PRODUCTION DATA
1
特長
2
アプリケーション
3
概要
4
Revision History
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
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Mode Selection and Device Configuration MODE/S-CONF
8.3.2
Adjustable VO Operation (External Voltage Divider)
8.3.3
Selectable VO Operation (VSET and Internal Voltage Divider)
8.3.4
Soft Start and Tracking (SS/TR)
8.3.4.1
Tracking Function
8.3.5
Smart Enable with Precise Threshold
8.3.6
Power Good (PG)
8.3.7
Output Discharge Function
8.3.8
Undervoltage Lockout (UVLO)
8.3.9
Current Limit and Short-Circuit Protection
8.3.10
High Temperature Specifications
8.3.11
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
Forced Pulse Width Modulation (FPWM) Operation
8.4.2
Power Save Mode Operation (Auto PFM and PWM)
8.4.3
AEE (Automatic Efficiency Enhancement)
8.4.4
100% Duty-Cycle Operation
8.4.5
Starting into a Prebiased Load
9
Application and Implementation
9.1
Application Information
9.2
Typical Application with Adjustable Output Voltage
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Custom Design With WEBENCH® Tools
9.2.2.2
Programming the Output Voltage
9.2.2.3
External Component Selection
9.2.2.3.1
Output Filter and Loop Stability
9.2.2.3.2
Inductor Selection
9.2.2.3.3
Capacitor Selection
9.2.2.3.3.1
Output Capacitor
9.2.2.3.3.2
Input Capacitor
9.2.2.3.3.3
Soft-Start Capacitor
9.2.3
Application Curves
9.2.3.1
Application Curves Vout = 1.8 V
9.2.3.2
Application Curves Vout = 1.2 V
9.2.3.3
Application Curves Vout = 0.6 V
9.3
Typical Application with Selectable VOUT using VSET
9.3.1
Design Requirements
9.3.2
Detailed Design Procedure
9.3.2.1
Programming the Output Voltage
9.3.3
Application Curves
9.3.3.1
Application Curves Vout = 5 V
9.3.3.2
Application Curves Vout = 3.3 V
9.4
System Examples
9.4.1
LED Power Supply
9.4.2
Powering Multiple Loads
9.4.3
Voltage Tracking
9.4.4
Inverting Buck-Boost (IBB)
9.5
Power Supply Recommendations
9.6
Layout
9.6.1
Layout Guidelines
9.6.2
Layout Example
9.6.3
Thermal Considerations
10
Device and Documentation Support
10.1
Device Support
10.1.1
サード・パーティ製品に関する免責事項
10.1.2
Development Support
10.1.2.1
Custom Design With WEBENCH® Tools
10.2
Documentation Support
10.2.1
Related Documentation
10.3
ドキュメントの更新通知を受け取る方法
10.4
サポート・リソース
10.5
Trademarks
10.6
静電気放電に関する注意事項
10.7
用語集
11
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)
RYT|9
MPSS145A
サーマルパッド・メカニカル・データ
発注情報
jajsom3a_oa
9.3.3
Application Curves