Loading [MathJax]/jax/output/SVG/fonts/TeX/fontdata.js
Menu
Product
Email
PDF
Order now
TPS54308 4.5-V to 28-V Input, 3-A Output, Synchronous 350-kHz FCCM Step-Down Converter in SOT23 Package
SLUSCV2A
June 2017 – April 2021
TPS54308
PRODUCTION DATA
CONTENTS
SEARCH
TPS54308 4.5-V to 28-V Input, 3-A Output, Synchronous 350-kHz FCCM Step-Down Converter in SOT23 Package
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and 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
Timing Requirements
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Fixed-Frequency PWM Control
7.3.2
Force Continuous Conduction Mode (FCCM)
7.3.3
Error Amplifier
7.3.4
Slope Compensation and Output Current
7.3.5
Enable and Adjusting Undervoltage Lockout
7.3.6
Safe Start-Up into Pre-Biased Outputs
7.3.7
Voltage Reference
7.3.8
Adjusting Output Voltage
7.3.9
Internal Soft Start
7.3.10
Bootstrap Voltage (BOOT)
7.3.11
Overcurrent Protection
7.3.11.1
High-Side MOSFET Overcurrent Protection
7.3.11.2
Low-Side MOSFET Overcurrent Protection
7.3.12
Output Overvoltage Protection (OVP)
7.3.13
Thermal Shutdown
7.4
Device Functional Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
TPS54308 8-V to 28-V Input, 5-V Output Converter
8.2.2
Design Requirements
8.2.3
Detailed Design Procedure
8.2.3.1
Custom Design With WEBENCH® Tools
8.2.3.2
Input Capacitor Selection
8.2.3.3
Bootstrap Capacitor Selection
8.2.3.4
Output Voltage Set Point
8.2.3.5
Undervoltage Lockout Set Point
8.2.3.6
Output Filter Components
8.2.3.6.1
Inductor Selection
8.2.3.6.2
Output Capacitor Selection
8.2.3.6.3
Feedforward Capacitor
8.2.4
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.1.2
Development Support
11.1.2.1
Custom Design With WEBENCH® Tools
11.2
Receiving Notification of Documentation Updates
11.3
Support Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DDC|6
MPDS124I
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sluscv2a_oa
sluscv2a_pm
search
No matches found.
Full reading width
Full reading width
Comfortable reading width
Expanded reading width
Card for each section
Card with all content
DATA SHEET
TPS54308 4.5-V to 28-V Input, 3-A Output, Synchronous 350-kHz FCCM Step-Down Converter in SOT23 Package
1
Features
4.5-V to 28-V wide input voltage range
Integrated 85-mΩ and 40-mΩ MOSFETs for 3-A, continuous output current
Low 2-μA shutdown, 300-μA quiescent current
Internal 5-mS soft start
Fixed 350-kHz switching frequency
Peak current mode control
Internal loop compensation
Overcurrent protection for both MOSFETs with hiccup mode protection
Overvoltage protection
Thermal shutdown
SOT-23 (6) package
Create a custom design using the TPS54308 with the
WEBENCH®
Power Designer
2
Applications
12-V, 24-V distributed power-bus supply
Industry application
White goods
Consumer application
Audio
STB, DTV
Printer
