SLUSAE5G August   2011  – April 2021 TPS53355

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings (1)
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Infomation
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 5-V LDO and VREG Start-Up
      2. 7.3.2 Adaptive On-Time D-CAP Control and Frequency Selection
      3. 7.3.3 Ramp Signal
      4. 7.3.4 Adaptive Zero Crossing
      5. 7.3.5 Power-Good
      6. 7.3.6 Current Sense, Overcurrent and Short Circuit Protection
      7. 7.3.7 Overvoltage and Undervoltage Protection
      8. 7.3.8 UVLO Protection
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable, Soft Start, and Mode Selection
      2. 7.4.2 Auto-Skip Eco-mode™ Light Load Operation
      3. 7.4.3 Forced Continuous Conduction Mode
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Small Signal Model
    2. 8.2 Typical Applications
      1. 8.2.1 Typical Application Circuit Diagram with Ceramic Output Capacitors
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Custom Design With WEBENCH® Tools
          2. 8.2.1.2.2 External Component Selection
          3. 8.2.1.2.3 External Component Selection Using All Ceramic Output Capacitors
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Typical Application Circuit
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 External Component Selection
        3. 8.2.2.3 Application Curves
  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

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DQP|22
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Typical Characteristics

For VOUT = 5 V, a 744355182 inductor is used. For 1 ≤ VOUT ≤ 3.3 V, a PA0513.441 inductor is used.

GUID-CB1187AB-0351-4617-9469-2A34C1A7D4A4-low.pngFigure 6-1 VDD Supply Current vs Junction Temperature
GUID-28EE60A1-E7CB-4B53-A27F-D49517488B82-low.pngFigure 6-3 TRIP Pin Current vs Junction Temperature
GUID-B0D7C3C5-FDB9-4E7F-AF33-761BC3BCFAE5-low.pngFigure 6-5 Switching Frequency vs Output Current
GUID-824BD1BF-02D7-4788-9C75-530C1D0B5545-low.pngFigure 6-7 Switching Frequency vs Output Current
GUID-D08A9375-D551-4AC8-B551-501BF1831EA2-low.pngFigure 6-9 Switching Frequency vs Output Voltage
GUID-FCCD22E7-A254-4DA3-B300-406D17AAB5E5-low.pngFigure 6-11 Output Voltage vs Input Voltage
GUID-FF28242A-FF8A-4805-A46B-11CCAC9EA6AD-low.pngFigure 6-13 Efficiency vs Output Current
GUID-EBF39CEE-737C-4EC6-A22F-F2BA607F799B-low.pngFigure 6-15 Efficiency vs Output Current
GUID-4697308F-4B13-4C62-9DF3-344F1AE6951D-low.pngFigure 6-17 Efficiency vs Output Current
GUID-92AFC069-EA91-4E0E-AE8A-3C0D129589EE-low.gifFigure 6-19 Start-Up Waveforms
GUID-991A0F4F-B8EF-490C-9317-B8407F9FEFDB-low.gifFigure 6-21 Shutdown Waveforms
GUID-8474A85D-5788-406C-9742-BCC2DB5F00A1-low.gifFigure 6-23 1.1-V Output FCCM Mode Steady-State Operation
GUID-FF11D6FB-671C-4829-8E36-B52DE7357E25-low.gifFigure 6-25 CCM to DCM Transition Waveforms
GUID-9A4578C1-7341-4DCC-AD54-CB6BC4D282E5-low.gifFigure 6-27 FCCM Load Transient
GUID-FCC064AA-80CE-4DD0-8A3C-42915161A084-low.gifFigure 6-29 Overcurrent Protection Waveforms
GUID-3F0BCA8F-8CAA-499C-A6A5-03E17118CB90-low.gifFigure 6-31 Over-temperature Protection Waveforms
GUID-CCBEA556-1CEC-4ACF-A151-1F8A630801DD-low.gif
VIN = 12 V VOUT = 5 V fSW = 500 kHz
Figure 6-33 Safe Operating Area
GUID-4FE91188-09B5-463A-A10B-0265544C986A-low.pngFigure 6-2 VDD Shutdown Current vs Junction Temperature
GUID-60FE0CEB-8CC7-4496-94A7-0E130871697A-low.pngFigure 6-4 OVP/UVP Trip Threshold vs Junction Temperature
GUID-BD8CEA8C-A777-43E3-A7F2-8BB69D1E8847-low.pngFigure 6-6 Switching Frequency vs Output Current
GUID-96BD78B1-1130-41FF-8854-676D6C829752-low.pngFigure 6-8 Switching Frequency vs Output Current
GUID-EB2A21D2-ECA0-48EE-8AAC-1A6FF8567485-low.pngFigure 6-10 Output Voltage vs Output Current
GUID-8B6B3808-7CC3-4626-83C1-E34351190C59-low.pngFigure 6-12 Efficiency vs Output Current
GUID-508B2994-2B30-4F57-9C4E-D44B26C8A3DE-low.pngFigure 6-14 Efficiency vs Output Current
GUID-BABAE4CF-780E-4149-A743-725E17FF69A2-low.pngFigure 6-16 Efficiency vs Output Current
GUID-358AA294-4B31-490E-82A4-24F4E359A58A-low.pngFigure 6-18 Efficiency vs Output Current
GUID-70746737-D03F-4F47-90D5-D5A63F47C4E5-low.gifFigure 6-20 Pre-Bias Start-Up Waveforms
GUID-0D0FDFD7-A36B-40F5-BC6B-F9BBFE06A5F7-low.gifFigure 6-22 UVLO Start-Up Waveforms
GUID-4F300A47-0767-4845-8B84-6978463E9E51-low.gifFigure 6-24 1.1-V Output Skip Mode Steady-State Operation
GUID-EE63096A-70E2-4FE2-BBC8-5BCB0E9D90D8-low.gifFigure 6-26 DCM to CCM Transition Waveforms
GUID-6F8336E1-B459-4258-A9A9-9C04E0407725-low.gifFigure 6-28 Skip Mode Load Transeint
GUID-49620263-80CC-45AB-8C20-97819D74551E-low.gifFigure 6-30 Output Short Circuit Protection Waveforms
GUID-8508E454-7209-445B-8D3B-AE434C751786-low.gif
VIN = 12 V VOUT = 1.2 V fSW = 500 kHz
Figure 6-32 Safe Operating Area