SLUSFR0A July   2024  – August 2024 TPS51375

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  PWM Operation and D-CAP3™ Control Mode
      2. 6.3.2  Remote Sense
      3. 6.3.3  Body Braking
      4. 6.3.4  5V LDO and BYP Function
      5. 6.3.5  Soft Start
      6. 6.3.6  Large Duty Operation
      7. 6.3.7  Power Good
      8. 6.3.8  Overcurrent Protection and Undervoltage Protection
      9. 6.3.9  Overvoltage Protection
      10. 6.3.10 UVLO Protection
      11. 6.3.11 Output Voltage Discharge
      12. 6.3.12 Standby Operation
      13. 6.3.13 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Advanced Eco-mode Control
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 External Component Selection
          1. 7.2.2.2.1 Remote Sense Amplifier and Adjusting the Output Voltage
          2. 7.2.2.2.2 Inductor Selection
          3. 7.2.2.2.3 Output Capacitor Selection
          4. 7.2.2.2.4 Input Capacitor Selection
          5. 7.2.2.2.5 Bootstrap Capacitor Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Custom Design With WEBENCH® Tools
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Tape and Reel Information

Package Options

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

4 Pin Configuration and Functions

Figure 4-1 19-Pin WQFN-HR, VBH Package (Top View)
Table 4-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NAME NO.
PGND 1,3,4 G Power GND terminal for the controller circuit and the internal circuitry.
VIN 2

P

 Input voltage supply pin for the control circuitry. Connect the input decoupling capacitors between VIN and PGND.
AGND 5 G

Ground of internal analog circuitry. Connect AGND to PGND at a single point close to AGND.
VCC 6 O Internal 5V LDO output. Power supply for internal analog circuits and driving. Decouple this pin to ground with a 2.2μF ceramic capacitor.
NC 7, 13 – 16 Leave the pin floating or connect to GND.
EN 8 I Enable input of buck converter.
PG 9 O Power-good indicator pin. This pin asserts low if the output voltage of buck is out of range due to thermal shutdown, dropout, over-voltage, EN shutdown or during slow start.
BST 10 I Boot-strap pin. Supply high side gate driver. Connect a 0.1μF ceramic capacitor between this pin and the SW pin.
SW 11,12 O Switching node connection to the inductor and bootstrap capacitor for buck. This pin voltage swings from a diode voltage below the ground up to input voltage of buck.
FB 17 I Output feedback. Connect FB to the output voltage with a feedback resistor divider.
BYP 18 I

External 5V bypass power supply input. Decouple this pin to GND with a 1uF ceramic capacitor. Leave this pin floating or connect this pin to GND if not used. This BYP external voltage must come after VIN voltage on and quit before VIN off.
GSNS 19 I

The return connection for a remote voltage sensing configuration. Short to AGND for single-end sense configuration.
(1) I = input, O = output, P = power, G = ground