SLVSFH3B October   2021  – June 2022 TPS631000

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Rating
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics 
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Undervoltage Lockout (UVLO)
      2. 7.3.2 Enable and Soft Start
      3. 7.3.3 Adjustable Output Voltage
      4. 7.3.4 Mode Selection (PFM/FPWM)
      5. 7.3.5 Reverse Current Operation
      6. 7.3.6 Protection Features
        1. 7.3.6.1 Input Overvoltage Protection
        2. 7.3.6.2 Output Overvoltage Protection
        3. 7.3.6.3 Short Circuit Protection
        4. 7.3.6.4 Thermal Shutdown
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design with WEBENCH Tools
        2. 8.2.2.2 Inductor Selection
        3. 8.2.2.3 Output Capacitor Selection
        4. 8.2.2.4 Input Capacitor Selection
        5. 8.2.2.5 Setting the Output Voltage
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
        1. 11.1.2.1 Custom Design with WEBENCH Tools
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

Figure 5-1 8-Pin DRL SOT-5X3 Package(Top View)
Table 5-1 Pin Functions
PIN I/O(1) DESCRIPTION
NAME NO.
VOUT 1 PWR Power stage output
LX2 2 PWR Inductor switching node of the boost stage
LX1 3 PWR Inductor switching node of the buck stage
VIN 4 PWR Supply input voltage
EN 5 I Device enable. Set High to enable and Low to disable. It must not be left floating.
MODE 6 I PFM/PWM selection. Set Low for power save mode, set High for forced PWM. It must not be left floating.
GND 7 PWR Power ground
FB 8 I Voltage feedback. Sensing pin
(1) PWR = power, I = input