SLVSB70C October   2013  – January 2021 TPS62085 , TPS62086 , TPS62087

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Options
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power Save Mode
      2. 8.3.2 100% Duty Cycle Low Dropout Operation
      3. 8.3.3 Soft Start
      4. 8.3.4 Switch Current Limit and Hiccup Short-Circuit Protection
      5. 8.3.5 Undervoltage Lockout
      6. 8.3.6 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Enable and Disable
      2. 8.4.2 Power Good
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Setting The Output Voltage
        3. 9.2.2.3 Output Filter Design
        4. 9.2.2.4 Inductor Selection
        5. 9.2.2.5 Capacitor Selection
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
        1. 12.1.1.1 Custom Design With WEBENCH® Tools
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary

Application Curves

VIN = 3.6 V, VOUT = 1.2 V, TA = 25°C, unless otherwise noted

Table 9-5 Table of Graphs
FIGURE
EfficiencyTPS62085, VOUT = 0.95 VFigure 9-2
TPS62085, VOUT = 1.2 VFigure 9-3
TPS62086, VOUT = 3.3 VFigure 9-4
TPS62087, VOUT = 1.8 VFigure 9-5
Line RegulationTPS62085Figure 9-6
Load RegulationTPS62085Figure 9-7
Switching FrequencyTPS62085Figure 7-1
WaveformsTPS62085, PWM Operation (Load = 3 A)Figure 9-8
TPS62085, PSM Operation (Load = 100 mA)Figure 9-9
TPS62085, Load Sweep (Load = Open to 3 A)Figure 9-10
TPS62085, Start-Up (Load = 0.47 Ω)Figure 9-11
TPS62085, Start-Up (Load = Open)Figure 9-12
TPS62085, Shutdown (Load = 0.47 Ω)Figure 9-13
TPS62085, Shutdown (Load = Open)Figure 9-14
TPS62085, Load Transient (Load = 0.5 A to 3 A)Figure 9-15
TPS62085, Load Transient (Load = 50 mA to 3 A)Figure 9-16
TPS62085, Output Short-Circuit Protection (Load = 0.47 Ω, Entry)Figure 9-17
TPS62085, Output Short-Circuit Protection (Load = 0.47 Ω, Recovery)Figure 9-18
TPS62085, Output Short-Circuit Protection (Load = 0.47 Ω, HICCUP Zoom In)Figure 9-19
GUID-4F6BE9FC-55D7-40CE-A8F0-8DDA0D58E35B-low.pngFigure 9-2 Efficiency
GUID-F39AA690-260C-4AFE-AA12-A27249B1EBC5-low.pngFigure 9-4 Efficiency
GUID-D7D3872F-C3EC-4268-AF18-D7434A4AFAD5-low.pngFigure 9-6 Line Regulation
GUID-350CD938-6CE5-484C-8334-BE73C6E227DD-low.gifFigure 9-8 PWM Operation, Load = 3 A
GUID-8BB2821D-7B4E-4666-AFF9-B55129EF3282-low.gifFigure 9-10 Load Sweep, Load = Open to 3 A
GUID-5D74DD04-9521-4A30-B5A4-1236A5C54B34-low.gifFigure 9-12 Start-Up, Load = Open
GUID-BB4A9482-B1BF-41CC-B3FC-FA224ACEECD4-low.gifFigure 9-14 Shutdown, Load = Open
GUID-21C3D93C-82BF-432C-B0A8-9E16873E3E3D-low.gifFigure 9-16 Load Transient, Load = 50 mA to 3 A
GUID-EDF9377A-DA2B-4D09-B1B4-BCD28E85DF76-low.gifFigure 9-18 Output Short-Circuit Protection, Load = 0.47 Ω, Recovery
GUID-0392ED51-B7F2-4705-848B-759E8BCF24D2-low.pngFigure 9-3 Efficiency
GUID-D8CCE768-AF11-42C4-8A94-FFA7C1BD24C6-low.pngFigure 9-5 Efficiency
GUID-268E8443-7A57-4242-B0A9-702769DB829C-low.pngFigure 9-7 Load Regulation
GUID-12FD8115-B200-46DA-A633-A5BDE754CDB0-low.gifFigure 9-9 PSM Operation, Load = 100 mA
GUID-CA206DAF-C127-4300-A585-3A9FFABE1F4B-low.gifFigure 9-11 Start-Up, Load = 0.47 Ω
GUID-0FCDDCA4-5354-4805-A3AB-5F17296416D2-low.gifFigure 9-13 Shutdown, Load = 0.47 Ω
GUID-B8B64DC8-0D1F-4F87-A4DD-031036FC1F8A-low.gifFigure 9-15 Load Transient, Load = 0.5 A to 3 A
GUID-F8FABA18-F870-47A7-80F2-B15389004327-low.gifFigure 9-17 Output Short-Circuit Protection, Load = 0.47 Ω, Entry
GUID-6716388E-3D55-46A4-B607-64D60889C617-low.gifFigure 9-19 Output Short-Circuit Protection, Load = 0.47 Ω, HICCUP Zoom In