SNOSB23F
October 2008 – July 2019
LM5575-Q1
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic
4
Revision History
5
Pin Configuration and Functions
Pin 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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Shutdown and Standby
7.3.2
Current Limit
7.3.3
Soft Start
7.3.4
Thermal Protection
7.4
Device Functional Modes
7.4.1
High-Voltage Start-Up Regulator
7.4.2
Oscillator and Sync Capability
7.4.3
Error Amplifier and PWM Comparator
7.4.4
Ramp Generator
7.4.5
BOOST Pin
7.4.6
Maximum Duty Cycle and Input Dropout Voltage
8
Application and Implementation
8.1
Application Information
8.1.1
Bias Power Dissipation Reduction
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Custom Design With WEBENCH® Tools
8.2.2.2
External Components
8.2.2.3
R3 (RT)
8.2.2.4
L1
8.2.2.5
C3 (CRAMP)
8.2.2.6
C9, C10
8.2.2.7
D1
8.2.2.8
C1, C2
8.2.2.9
C8
8.2.2.10
C7
8.2.2.11
C4
8.2.2.12
R5, R6
8.2.2.13
R1, R2, C12
8.2.2.14
R7, C11
8.2.2.15
R4, C5, C6
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Examples
10.3
Thermal Considerations
11
Device and Documentation Support
11.1
Device Support
11.1.1
Custom Design With WEBENCH® Tools
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PWP|16
MPDS371A
Thermal pad, mechanical data (Package|Pins)
PWP|16
PPTD288A
Orderable Information
snosb23f_oa
snosb23f_pm
2
Applications
Automotive
Industrial