SLVS834B
July 2008 – June 2019
TPS5450-Q1
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic and Efficiency Curve
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
Recommended Operating Conditions
6.3
Thermal Information
6.4
Dissipation Ratings
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
Oscillator Frequency
7.3.2
Voltage Reference
7.3.3
Enable (ENA) and Internal Slow Start
7.3.4
Undervoltage Lockout (UVLO)
7.3.5
Output Feedback (VSENSE) and Internal Compensation
7.3.6
Voltage Feedforward
7.3.7
Pulse-Width-Modulation (PWM) Control
7.3.8
Overcurrent Limiting
7.3.9
Overvoltage Protection
7.3.10
Thermal Shutdown
8
Application Information
8.1
Application Information
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
Boost Capacitor (BOOT)
8.2.2.3
Switching Frequency
8.2.2.4
Input Capacitors
8.2.2.5
Output Filter Components
8.2.2.5.1
Inductor Selection
8.2.2.5.2
Capacitor Selection
8.2.2.6
Output Voltage Setpoint
8.2.2.7
Boot Capacitor
8.2.2.8
Catch Diode
8.2.2.9
Output Voltage Limitations
8.2.2.10
Internal Compensation Network
8.2.3
Application Curves
9
Layout
9.1
Layout Guidelines
9.2
Layout Examples
9.3
Thermal Calculations
10
Device and Documentation Support
10.1
Device Support
10.1.1
Third-Party Products Disclaimer
10.2
Development Support
10.2.1
Custom Design With WEBENCH® Tools
10.3
Receiving Notification of Documentation Updates
10.4
Community Resources
10.5
Trademarks
10.6
Electrostatic Discharge Caution
10.7
Glossary
11
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DDA|8
MPDS092F
Thermal pad, mechanical data (Package|Pins)
DDA|8
PPTD043J
Orderable Information
slvs834b_oa
10.2
Development Support