SLUS557G
March 2003 – December 2016
UC28023
,
UC28025
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Revision History
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
Switching Characteristics
6.7
Typical Characteristics
7
Parameter Measurement Information
7.1
Control Methods and Test Circuits
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Error Amplifier
8.3.2
Synchronization
8.3.3
Constant Volt-Second Clamp Circuit
8.3.4
Outputs
8.3.5
Open-Loop Laboratory Test Fixture
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Timing Resistor and Capacitor Selection
9.2.2.2
Turns Ratio Selection
9.2.2.3
Inductor Selection
9.2.2.4
Rectifier Diode Selection
9.2.2.5
Snubber Components Selection
9.2.2.6
VCC and VC Capacitor Selection
9.2.2.7
Output Capacitor Selection
9.2.2.8
Input Capacitor Selection
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Related Links
12.3
Receiving Notification of Documentation Updates
12.4
Community Resources
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
Glossary
13
Mechanical, Packaging, and Orderable Information
封装选项
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
DW|16
N|16
散热焊盘机械数据 (封装 | 引脚)
订购信息
slus557g_oa
slus557g_pm
7
Parameter Measurement Information
7.1
Control Methods and Test Circuits
Figure 7.
Voltage Mode Control
A small filter may be required to suppress switch noise.
Figure 8.
Peak Current Mode Control
Figure 9.
Oscillator Circuit
Figure 10.
Feedforward Technique for Off-Line Voltage-Mode Applications