SLVSFM1A
March 2021 – November 2023
TPS62902
PRODUCTION DATA
1
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
8.4
Power Supply Recommendations
8.5
Layout
8.5.1
Layout Guidelines
8.5.2
Layout Example
8.5.2.1
Thermal Considerations
9
Device and Documentation Support
9.1
Device Support
9.1.1
Development Support
9.1.1.1
Custom Design With WEBENCH® Tools
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RPJ|9
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvsfm1a_oa
slvsfm1a_pm
1
Features
High efficiency for wide duty cycle and load range
I
Q
: 4 µA typical
Selectable switching frequency of 2.5 MHz and 1.0 MHz
R
DS(ON)
: 62-mΩ high side, 22-mΩ low side
Automatic efficiency enhancement (AEE)
Small 1.5-mm × 2.0-mm VQFN package with 0.5-mm pitch
Up to 2-A continuous output current
±0.9% feedback voltage accuracy across temp (-40°C to 150°C)
Configurable ouput voltage options:
V
FB
external divider: 0.6 V to 5.5 V
V
SET
internal divider: 16 options between 0.4 V and 5.5 V
DCS-Control™
topology with 100% mode
Highly flexible and easy to use
Optimized pinout for single-layer routing
Precise enable input
Forced PWM or auto power save mode
Power good output
Selectable active output discharge
Adjustable soft start and tracking
No external bootstrap capacitor required
Create a custom design using the
TPS62902
using the
WEBENCH®
Power Designer