SBVU075 April   2022

 

  1.   Trademarks
  2. 1Introduction
  3. 2Setup
    1. 2.1 LDO Input and Output Connector Descriptions
      1. 2.1.1 VIN and GND
      2. 2.1.2 VOUT and GND
      3. 2.1.3 J3
      4. 2.1.4 J4 (EN)
      5. 2.1.5 J5 (CP_EN)
      6. 2.1.6 J1 (PG)
    2. 2.2 Optional Load Transient Input and Output Connector Descriptions
      1. 2.2.1 VCC and GND
      2. 2.2.2 J17
      3. 2.2.3 TP10
      4. 2.2.4 IN1
      5. 2.2.5 J15
      6. 2.2.6 TP11 and TP12
      7. 2.2.7 J6 and TP13
    3. 2.3 TPS7A57 LDO Operation
    4. 2.4 Optional Load Transient Circuit Operation
  4. 3Board Layout
  5. 4TPS7A57EVM-056 Schematics
  6. 5Bill of Materials

2.1.4 J4 (EN)

J4 (EN) is a 3-pin header used to enable or disable the TPS7A57.

The center pin of the 3-pin header is tied to the TPS7A57 EN input. When the 2-pin shunt is placed across the bottom two pins of the header, VIN is shorted to EN, and the TPS7A57 is enabled. When the 2-pin shunt is placed across the top two pins of the header, GND is shorted to EN, and the TPS7A57 is disabled. Alternatively, the 3-pin header can remain floating. If the 3-pin header is floating, the TPS7A57 remains disabled.

When driving the EN terminal with an off-board supply or signal generator, the applied voltage must be kept between 0 V and 6.0 V.