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具有 Eco-mode控制机制的 TPS54260-EP 3.5V 至 60V 降压转换器
ZHCSG03A
December 2016 – January 2017
TPS54260-EP
PRODUCTION DATA.
CONTENTS
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具有 Eco-mode控制机制的 TPS54260-EP 3.5V 至 60V 降压转换器
1
特性
2
应用范围
3
说明
4
修订历史记录
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Fixed Frequency PWM Control
7.3.2
Slope Compensation Output Current
7.3.3
Pulse Skip Eco-mode Control Scheme
7.3.4
Low Dropout Operation and Bootstrap Voltage (Boot)
7.3.5
Error Amplifier
7.3.6
Voltage Reference
7.3.7
Adjusting the Output Voltage
7.3.8
Enable and Adjusting Undervoltage Lockout (UVLO)
7.3.9
Slow-Start and Tracking Pin (SS/TR)
7.3.10
Overload Recovery Circuit
7.3.11
Constant Switching Frequency and Timing Resistor (RT and CLK Pin)
7.3.12
Overcurrent Protection and Frequency Shift
7.3.13
Selecting the Switching Frequency
7.3.14
How to Interface to RT/CLK Pin
7.3.15
Power Good (PWRGDPin)
7.3.16
Overvoltage Transient Protection (OVTP)
7.3.17
Thermal Shutdown
7.3.18
Small Signal Model for Loop Response
7.3.19
Simple Small-Signal Model for Peak Current Mode Control
7.3.20
Small-Signal Model for Frequency Compensation
7.4
Device Functional Modes
7.4.1
Sequencing
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Selecting The Switching Frequency
8.2.2.2
Output Inductor Selection (LO)
8.2.2.3
Output Capacitor
8.2.2.4
Catch Diode
8.2.2.5
Input Capacitor
8.2.2.6
Slow-Start Capacitor
8.2.2.7
Bootstrap Capacitor Selection
8.2.2.8
UVLO Set Point
8.2.2.9
Output Voltage and Feedback Resistors Selection
8.2.2.10
Compensation
8.2.2.11
Discontinuous Mode and Eco-mode Control Scheme Boundary
8.2.2.12
Power Dissipation
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Estimated Circuit Area
10.2
Layout Example
11
器件和文档支持
11.1
接收文档更新通知
11.2
社区资源
11.3
商标
11.4
静电放电警告
11.5
Glossary
12
机械、封装和可订购信息
重要声明
封装选项
机械数据 (封装 | 引脚)
DGQ|10
MPDS043F
DRC|10
MPDS117L
散热焊盘机械数据 (封装 | 引脚)
DGQ|10
PPTD325B
DRC|10
QFND013N
订购信息
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