SNVSAD9
April 2016
LM5175-Q1
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Simplified Schematic
5
Revision History
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Fixed Frequency Valley/Peak Current Mode Control with Slope Compensation
8.3.2
VCC Regulator and Optional BIAS Input
8.3.3
Enable/UVLO
8.3.4
Soft-Start
8.3.5
Overcurrent Protection
8.3.6
Average Input/Output Current Limiting
8.3.7
CCM/DCM Operation
8.3.8
Frequency and Synchronization (RT/SYNC)
8.3.9
Frequency Dithering
8.3.10
Output Overvoltage Protection (OVP)
8.3.11
Power Good (PGOOD)
8.3.12
Gm Error Amplifier
8.3.13
Integrated Gate Drivers
8.3.14
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
Shutdown, Standby, and Operating Modes
8.4.2
MODE Pin Configuration
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
Frequency
9.2.2.2
VOUT
9.2.2.3
Inductor Selection
9.2.2.4
Output Capacitor
9.2.2.5
Input Capacitor
9.2.2.6
Sense Resistor (RSENSE)
9.2.2.7
Slope Compensation
9.2.2.8
UVLO
9.2.2.9
Soft-Start Capacitor
9.2.2.10
Dither Capacitor
9.2.2.11
MOSFETs QH1 and QL1
9.2.2.12
MOSFETs QH2 and QL2
9.2.2.13
Frequency Compensation
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Community Resources
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
Glossary
13
Mechanical, Packaging, and Orderable Information
13.1
Package Option Addendum
13.1.1
Packaging Information
Package Options
Mechanical Data (Package|Pins)
PWP|28
MPDS373B
Thermal pad, mechanical data (Package|Pins)
PWP|28
PPTD396
Orderable Information
snvsad9_oa
snvsad9_pm
5 Revision History
DATE
REVISION
NOTES
April 2016
*
Initial Release