ZHCSPT7A
October 2023 – December 2023
TPSM843620
PRODUCTION DATA
1
1
特性
2
应用
3
说明
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
1.0-V Output, 1-MHz 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
接收文档更新通知
8.2
支持资源
8.3
Trademarks
8.4
静电放电警告
8.5
术语表
9
Revision History
10
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
SIT|15
MPQS048B
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcspt7a_oa
6.2
Functional Block Diagram