SLVUCA1 November   2021 TPS7H1210-SEP

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  3. 2Setup
    1. 2.1 Input/Output Connectors and Jumper Descriptions
      1. 2.1.1 J1, J4 (–)VIN
      2. 2.1.2 J6 GND
      3. 2.1.3 J2, J5 (–)VOUT
      4. 2.1.4 J7 GND
      5. 2.1.5 J3 EN
      6. 2.1.6 TP1-5 Test Points
    2. 2.2 Equipment Setup
  4. 3Operation
  5. 4Adjustable Operation
  6. 5Test Results
    1. 5.1 Enable, Disable, and Soft Start Timing
    2. 5.2 Output Load Transients
    3. 5.3 PSRR
    4. 5.4 Noise Spectral Density
  7. 6Board Layout
  8. 7Schematic and Bill of Materials

2.1.5 J3 EN

Output enable. To enable the regulator output, connect a jumper to short between pins 2 and 3. To disable the output, connect a jumper to short between pins 1 and 2. Leaving J3 without a jumper, will enable the regulator through the resistor divider. The resistor divider allows an external signal to driven between pin 2 and pin 1.

The resistor divider will reduce VIN applied to the EN pin to approximately 40% of VIN. For lower VIN voltages, the voltage on EN may not be sufficient to meet the VEN(+HI) minimum threshold of 2 V to ensure the regulator is enabled. In this case connect jumper between pin 2 and pin 3 to pull the EN pin to VIN.