SLVSES3A
February 2021 – March 2021
TPS62903
PRODUCTION DATA
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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Mode Selection and Device Configuration MODE/S-CONF
7.3.2
Adjustable VO Operation (External Voltage Divider)
7.3.3
Setable VO Operation (VSET and Internal Voltage Divider)
7.3.4
Soft Start / Tracking (SS/TR)
7.3.5
Smart Enable with Precise Threshold
7.3.6
Power Good (PG)
7.3.7
Undervoltage Lockout (UVLO)
7.3.8
Current Limit And Short Circuit Protection
7.3.9
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Pulse Width Modulation (PWM) Operation
7.4.2
AEE (Automatic Efficiency Enhancement)
7.4.3
Power Save Mode Operation (Auto PFM/PWM)
7.4.4
100% Duty-Cycle Operation
7.4.5
Output Discharge Function
7.4.6
Starting into a Pre-Biased Load
8
Application and Implementation
8.1
Application Information
8.2
Typical Application with Adjustable Output Voltage
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Custom Design With WEBENCH® Tools
8.2.2.2
Programming the Output Voltage
8.2.2.3
External Component Selection
8.2.2.4
Inductor Selection
8.2.2.5
Capacitor Selection
8.2.2.5.1
Output Capacitor
8.2.2.5.2
Input Capacitor
8.2.2.5.3
Soft-Start Capacitor
8.2.2.6
Tracking Function
8.2.2.7
Output Filter and Loop Stability
8.2.3
Application Curves
8.2.4
Typical Application with Setable VO using VSET
8.2.4.1
Design Requirements
8.2.4.2
Detailed Design Procedure
8.2.4.3
Application Curves
8.3
System Examples
8.3.1
LED Power Supply
8.3.2
Powering Multiple Loads
8.3.3
Voltage Tracking
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.2.1
Thermal Considerations
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.1.1
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
Package Options
Mechanical Data (Package|Pins)
RPJ|9
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvses3a_oa
slvses3a_pm
11.6
Glossary
TI Glossary
This glossary lists and explains terms, acronyms, and definitions.