SNOSDE5A
December 2021 – May 2022
LM74502
,
LM74502H
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
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Input Voltage
8.3.2
Charge Pump (VCAP)
8.3.3
Gate Driver (GATE, SRC)
8.3.3.1
Inrush Current Control
8.3.4
Enable (EN/UVLO)
8.3.5
Overvoltage Protection (OV)
8.4
Device Functional Modes
8.4.1
Shutdown Mode
8.4.2
Conduction Mode
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
Design Considerations
9.2.2.2
MOSFET Selection
9.2.2.3
Overvoltage Protection
9.2.2.4
Charge Pump VCAP, Input and Output Capacitance
9.2.3
Application Curves
9.3
Input Surge Stopper Using LM74502, LM74502H
9.3.1
VS Capacitance, Resistor R1 and Zener Clamp (DZ)
9.3.2
Overvoltage Protection
9.3.3
MOSFET Selection
9.4
Fast Turn-On and Turn-Off High Side Switch Driver Using LM74502H
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Receiving Notification of Documentation Updates
12.2
Support Resources
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
Glossary
13
Mechanical, Packaging, and Orderable Information
11.2
Layout Example
Figure 11-1
Layout Example