SNVSAA6B
February 2015 – December 2024
LMR14050
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
Switching Characteristics
5.7
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Fixed Frequency Peak Current Mode Control
6.3.2
Slope Compensation
6.3.3
Sleep Mode
6.3.4
Low Dropout Operation and Bootstrap Voltage (BOOT)
6.3.5
Adjustable Output Voltage
6.3.6
Enable and Adjustable Undervoltage Lockout
6.3.7
External Soft Start
6.3.8
Switching Frequency and Synchronization (RT/SYNC)
6.3.9
Overcurrent and Short-Circuit Protection
6.3.10
Overvoltage Protection
6.3.11
Thermal Shutdown
6.4
Device Functional Modes
6.4.1
Shutdown Mode
6.4.2
Active Mode
6.4.3
CCM Mode
6.4.4
Light Load Operation
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Output Voltage Set-Point
7.2.2.2
Switching Frequency
7.2.2.3
Output Inductor Selection
7.2.2.4
Output Capacitor Selection
7.2.2.5
Schottky Diode Selection
7.2.2.6
Input Capacitor Selection
7.2.2.7
Bootstrap Capacitor Selection
7.2.2.8
Soft-start Capacitor Selection
7.2.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Receiving Notification of Documentation Updates
8.2
Support Resources
8.3
Trademarks
8.4
Electrostatic Discharge Caution
8.5
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DDA|8
MPDS092F
Thermal pad, mechanical data (Package|Pins)
DDA|8
PPTD058I
Orderable Information
snvsaa6b_oa
snvsaa6b_pm
Data Sheet
LMR14050 SIMPLE SWITCHER
®
Power Converter 40V, 5A, 2.2MHz Step-Down Converter With 40µA I
Q