JAJSNW1B
October 2023 – June 2024
TPSM843620
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 (Module)
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
VIN Pins and VIN UVLO
6.3.2
Enable and Adjustable UVLO
6.3.3
Adjusting the Output Voltage
6.3.4
Switching Frequency Selection
6.3.5
Switching Frequency Synchronization to an External Clock
6.3.5.1
Internal PWM Oscillator Frequency
6.3.5.2
Loss of Synchronization
6.3.5.3
Interfacing the SYNC/FSEL Pin
6.3.6
Ramp Amplitude Selection
6.3.7
Soft Start and Prebiased Output Start-Up
6.3.8
Mode Pin
6.3.9
Power Good (PGOOD)
6.3.10
Current Protection
6.3.10.1
Positive Inductor Current Protection
6.3.10.2
Negative Inductor Current Protection
6.3.11
Output Overvoltage and Undervoltage Protection
6.3.12
Overtemperature Protection
6.3.13
Output Voltage Discharge
6.4
Device Functional Modes
6.4.1
Forced Continuous-Conduction Mode
6.4.2
Discontinuous Conduction Mode During Soft Start
7
Application and Implementation
7.1
Application Information
7.2
Typical Applications
7.2.1
1.0V Output, 1MHz Application
7.2.1.1
Design Requirements
7.2.1.2
Detailed Design Procedure
7.2.1.2.1
Switching Frequency
7.2.1.2.2
Output Inductor Selection
7.2.1.2.3
Output Capacitor
7.2.1.2.4
Input Capacitor
7.2.1.2.5
Adjustable Undervoltage Lockout
7.2.1.2.6
Output Voltage Resistors Selection
7.2.1.2.7
Bootstrap Capacitor Selection
7.2.1.2.8
BP5 Capacitor Selection
7.2.1.2.9
PGOOD Pullup Resistor
7.2.1.2.10
Current Limit Selection
7.2.1.2.11
Soft-Start Time Selection
7.2.1.2.12
Ramp Selection and Control Loop Stability
7.2.1.2.13
MODE Pin
7.2.1.3
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 Performance
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)
SIT|15
MPQS048B
サーマルパッド・メカニカル・データ
発注情報
jajsnw1b_oa
jajsnw1b_pm
7.2.1.2
Detailed Design Procedure