SLVSG98B February   2023  – March 2024 TPS628301 , TPS628302 , TPS628303 , TPS628304

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Options
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information Discrete
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Pulse Width Modulation (PWM) Operation
      2. 7.3.2 Power Save Mode (PSM) Operation
      3. 7.3.3 Start-Up and Soft Start
      4. 7.3.4 Switch Cycle-by-Cycle Current Limit
      5. 7.3.5 Short-Circuit Protection
      6. 7.3.6 Undervoltage Lockout
      7. 7.3.7 Thermal Shutdown
      8. 7.3.8 Optimized EMI Performance
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable, Disable, and Output Discharge
      2. 7.4.2 Minimum Duty Cycle and 100% Mode Operation
      3. 7.4.3 Power Good
  9. 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 Setting The Output Voltage
        3. 8.2.2.3 Inductor Selection
        4. 8.2.2.4 Output Capacitor Selection
        5. 8.2.2.5 Input Capacitor Selection
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
        1. 8.4.2.1 Thermal Considerations
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
      2. 9.1.2 Development Support
        1. 9.1.2.1 Custom Design With WEBENCH® Tools
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

5 Pin Configuration and Functions

GUID-20211007-SS0I-NZVP-N0V0-GXR10JMDZFCL-low.svgFigure 5-1 RZE Package 8-Pin WQFN Top View
GUID-20211007-SS0I-HHZT-WNFC-BNPFXJX6LHM1-low.svgFigure 5-2 DRL Package 8-Pin SOT Top View
Table 5-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NAME NO.
VIN 1

PWR

 Input voltage pin. Connect the input capacitor as close as possible between VIN and GND.
GND 2 Ground pin.

MODE

 3

I

 The device runs in PSM/PWM mode when this pin is pulled low and in forced-PWM mode when pulled high. This event can also be done when the device is in-operation. Do not leave this pin floating.
FB

4

I

 Feedback pin. Connect the resistive output voltage divider to this pin.

VOS

5

I

 Output voltage sense pin. This pin must be connected directly after the inductor.
PG 6

O

 Power good open-drain output pin. The pullup resistor can be connected to voltages up to 5.5 V. If unused, leave this pin floating.
SW 7 PWR Switch pin of the power stage
EN 8 I Device enable pin. To enable the device, this pin must be pulled high. Pulling this pin low disables the device. Do not leave this pin unconnected.
(1) I = input, O = output, PWR = power