SNOSDF6
October 2023
LM74930-Q1
PRODUCTION DATA
1
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
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Charge Pump
7.3.2
Dual Gate Control (DGATE, HGATE)
7.3.2.1
Load Disconnect Switch Control (HGATE, OUT)
7.3.2.2
Reverse Battery Protection (A, C, DGATE)
7.3.3
Overcurrent Protection (CS+, CS-, ILIM, IMON, TMR)
7.3.4
Overcurrent Protection with Circuit Breaker (ILIM, TMR)
7.3.5
Overcurrent Protection With Latch-Off
7.3.6
Short-Circuit Protection (ISCP)
7.3.6.1
Device Wake-Up With Output Short-Circuit Condition
7.3.7
Analog Current Monitor Output (IMON)
7.3.8
Overvoltage and Undervoltage Protection (OV, UVLO, OVCLAMP)
7.3.9
Disabling Reverse Current Blocking Functionality (MODE)
7.3.10
Device Functional Modes
7.3.10.1
Low Quiescent Current Shutdown Mode (EN)
8
Applications and Implementation
8.1
Application Information
8.2
Typical Application: 200-V Unsuppressed Load Dump Protection Application
8.2.1
Design Requirements for 200-V Unsuppressed Load Dump Protection
8.2.2
Detailed Design Procedure
8.2.2.1
VS Capacitance, Resistor R1 and Zener Clamp (DZ)
8.2.2.2
Charge Pump Capacitance VCAP
8.2.2.3
Input and Output Capacitance
8.2.2.4
Overvoltage and Undervoltage Protection Component Selection
8.2.2.5
Selection of Scaling Resistor (RSET) and Short-Circuit Protection Setting Resistor (RSCP)
8.2.2.6
Overcurrent Limit (ILIM), Circuit Breaker Timer (TMR), and Current Monitoring Output (IMON) Selection
8.2.2.7
Selection of Current Sense Resistor, RSNS
8.2.2.8
Hold-Up Capacitance
8.2.2.9
MOSFET Q1 Selection
8.2.2.10
MOSFET Q2 Selection
8.2.2.11
Input TVS Selection
8.2.3
Application Curves
8.3
Best Design Practices
8.4
Power Supply Recommendations
8.4.1
Transient Protection
8.4.2
TVS Selection for 12-V Battery Systems
8.4.3
TVS Selection for 24-V Battery Systems
8.5
Layout
8.5.1
Layout Guidelines
8.5.2
Layout Example
9
Device and Documentation Support
9.1
Receiving Notification of Documentation Updates
9.2
Support Resources
9.3
Trademarks
9.4
Electrostatic Discharge Caution
9.5
Glossary
10
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RGE|24
MPQF124G
Thermal pad, mechanical data (Package|Pins)
RGE|24
QFND703
Orderable Information
snosdf6_oa
snosdf6_pm
7
Detailed Description