SNVSB28A
December 2017 – April 2026
LM25575-Q1
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
High Voltage Start-Up Regulator
6.4
Device Functional Modes
6.4.1
Shutdown and Stand-by Mode
6.4.2
Error Amplifier and PWM Comparator
6.4.3
Ramp Generator
6.4.4
Maximum Duty Cycle and Input Drop-out Voltage
6.4.5
Current Limit
6.4.6
Soft Start
6.4.7
Boost Pin
6.4.8
Thermal Protection
7
Application and Implementation
7.1
Application Information
7.1.1
BIas Power Dissipation Reduction
7.2
Typical Application
7.2.1
Typical Schematic for High Frequency (1MHz) Application
7.2.2
Design Requirements
7.2.3
Detailed Design Procedure
7.2.3.1
Custom Design With WEBENCH® Tools
7.2.3.2
R3 (RT)
7.2.3.3
L1
7.2.3.4
C3 (CRAMP)
7.2.3.5
C9, C10
7.2.3.6
D1
7.2.3.7
C1, C2
7.2.3.8
C8
7.2.3.9
C7
7.2.3.10
C4
7.2.3.11
R5, R6
7.2.3.12
R1, R2, C12
7.2.3.13
R7, C11
7.2.3.14
R4, C5, C6
7.2.4
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.1.1
PCB Layout and Thermal Considerations
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.1.1
Developmental Support
8.1.1.1
Custom Design With WEBENCH® Tools
8.2
Documentation Support
8.2.1
Related Documentation
8.3
Receiving Notification of Documentation Updates
8.4
Support Resources
8.5
Trademarks
8.6
Electrostatic Discharge Caution
8.7
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PWP|16
MPDS371C
Thermal pad, mechanical data (Package|Pins)
PWP|16
PPTD288A
Orderable Information
snvsb28a_oa
snvsb28a_pm