SLUSDX7A September   2020  – October 2020 TPS51397A

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    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 PWM Operation and DCAP3 Control
      2. 7.3.2 Soft Start
      3. 7.3.3 Large Duty Operation
      4. 7.3.4 Power Good
      5. 7.3.5 Overcurrent Protection and Undervoltage Protection
      6. 7.3.6 Overvoltage Protection
      7. 7.3.7 UVLO Protection
      8. 7.3.8 Output Voltage Discharge
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Light Load Operation
      2. 7.4.2 Advanced Eco-mode Control
      3. 7.4.3 Out-of-Audio
      4. 7.4.4 Mode Selection
      5. 7.4.5 Standby Operation
  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 External Component Selection
          1. 8.2.2.1.1 Output Voltage Set Point
          2. 8.2.2.1.2 MODE Selection
          3. 8.2.2.1.3 Inductor Selection
          4. 8.2.2.1.4 Output Capacitor Selection
          5. 8.2.2.1.5 Input Capacitor Selection
      3. 8.2.3 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 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

Typical Characteristics

TJ = -40°C to 125°C, VIN = 12 V, unless otherwise noted.

GUID-20200820-CA0I-XZVT-TBC6-HMPCXDZJCKQJ-low.gifFigure 6-1 Supply Current vs Junction Temperature
GUID-20200820-CA0I-S5HJ-CXJK-DPD1GR2QWPR6-low.gifFigure 6-3 Feedback Voltage vs Junction Temperature
GUID-20200820-CA0I-NF0T-JFZ9-THW3BG2DCJHM-low.gifFigure 6-5 Enable Off Voltage vs Junction Temperature
GUID-20200820-CA0I-GFSC-ZCNZ-TJLDRDKVL57B-low.gifFigure 6-7 Low-Side RDS(on) vs Junction Temperature
GUID-20200820-CA0I-7FCC-LFL6-2BDKPJDCKVZW-low.gifFigure 6-9 UVP Threshold vs Junction Temperature
GUID-20200820-CA0I-6FVH-LDSX-N68XLFBPNRL9-low.gifFigure 6-11 Valley Current Limit vs Junction Temperature
GUID-20200820-CA0I-0ZVW-0K7Q-W1BHDF3X4VQK-low.gifFigure 6-13 Soft-Start Time vs Junction Temperature
GUID-20200820-CA0I-GDZJ-JBNX-MFQXJ83GHCNL-low.gifFigure 6-15 Efficiency vs Load Current,
FSW = 500 kHz, Eco-mode
GUID-20200820-CA0I-MKMW-2WBN-CTV0XTSP65M6-low.gifFigure 6-17 Efficiency vs Load Current,
FSW = 500 kHz, OOA
GUID-20200820-CA0I-7PQV-TWFF-KFJCBVKCKQZK-low.gifFigure 6-19 Switching Frequency vs Load Current,
FSW = 500 kHz, Eco-mode
GUID-20200820-CA0I-3T8L-PXHV-FSS21WKHGFR8-low.gifFigure 6-21 Switching Frequency vs Load Current, FSW = 500 kHz, OOA
GUID-20200820-CA0I-9HHT-PHKV-S8PQJQV5TLLZ-low.gifFigure 6-2 Shutdown Current vs Junction Temperature
GUID-20200820-CA0I-XL1G-FG8V-1X3JK6WRP4FV-low.gifFigure 6-4 Enable On Voltage vs Junction Temperature
GUID-20200820-CA0I-KN3T-4RMZ-QW6CQVJGSRTR-low.gifFigure 6-6 High-Side RDS(on) vs Junction Temperature
GUID-20200820-CA0I-JSSB-GDXP-VNNXDFDHJ0CQ-low.gifFigure 6-8 OVP Threshold vs Junction Temperature
GUID-20200820-CA0I-R9JZ-J200-T32BBHBHZ7MD-low.gifFigure 6-10 Discharge Resistor vs Junction Temperature
GUID-20200820-CA0I-RFFR-QMNV-NDVC2GLN1F9R-low.gifFigure 6-12 Negative Current Limit vs Junction Temperature
GUID-20200820-CA0I-NTNV-JTQ5-XJWLRFGNR8VB-low.gifFigure 6-14 OOA Period vs Junction Temperature
GUID-20200820-CA0I-5ZND-0HRD-G4VRMMXQJ9JB-low.gifFigure 6-16 Efficiency vs Load Current,
FSW = 800 kHz, Eco-mode
GUID-20200820-CA0I-JZPR-8HZW-G2MD58CWXDFP-low.gifFigure 6-18 Efficiency vs Load Current, FSW = 800 kHz, OOA
GUID-20200820-CA0I-JLQG-FNRN-MVKTSJZBZZ2M-low.gifFigure 6-20 Switching Frequency vs Load Current, FSW = 800 kHz, Eco-mode
GUID-20200820-CA0I-VJV9-XDTC-KKTW3FRKFWKL-low.gifFigure 6-22 Switching Frequency vs Load Current, FSW = 800k Hz, OOA