ZHCSN09A June 2021 – September 2022 LM5168-Q1 , LM5169-Q1
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Control Architecture
- 8.3.2 Internal VCC Regulator and Bootstrap Capacitor
- 8.3.3 Internal Soft Start
- 8.3.4 On-Time Generator
- 8.3.5 Current Limit
- 8.3.6 N-Channel Buck Switch and Driver
- 8.3.7 Synchronous Rectifier
- 8.3.8 Enable, Undervoltage Lockout (EN/UVLO)
- 8.3.9 Power Good (PGOOD)
- 8.3.10 Thermal Protection
- 8.4 Device Functional Modes
-
9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Fly-Buck? Converter Application
- 9.2.1 Design Requirements
- 9.2.2
Detailed Design Procedure
- 9.2.2.1 Switching Frequency (RT)
- 9.2.2.2 Transformer Selection
- 9.2.2.3 Output Capacitor Selection
- 9.2.2.4 Secondary Output Diode
- 9.2.2.5 Setting Output Voltage
- 9.2.2.6 Input Capacitor
- 9.2.2.7 Type-3 Ripple Network
- 9.2.2.8 CBST Selection
- 9.2.2.9 Minimum Secondary Output Load
- 9.2.2.10 Example Design Summary
- 9.2.3 Application Curves
- 9.3 Typical Buck Application
- 9.4 Power Supply Recommendations
- 9.5 Layout
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
8.2 Functional Block Diagram
