SLVU189B february   2007  – may 2023 TPS74701 , TPS74801

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Performance Specification Summary
    2. 1.2 Modifications
  5. 2Input and Output Connector Descriptions
    1. 2.1  J1–VIN/GND
    2. 2.2  J2–GND
    3. 2.3  J3–VIN
    4. 2.4  J4–VBIAS
    5. 2.5  J5–GND
    6. 2.6  J6–VOUT
    7. 2.7  J7–GND
    8. 2.8  J8–VOUT/GND
    9. 2.9  J10–EN
    10. 2.10 J11–GND
    11. 2.11 J12-VIN/GND
    12. 2.12 J13-VOUT/GND
    13. 2.13 JP1–1 ms/Simult Versus 10 ms/Ratio
    14. 2.14 S1
    15. 2.15 TP1
    16. 2.16 TP2
    17. 2.17 TP3
    18. 2.18 TP4
  6. 3Test Setup
  7. 4Test Results
  8. 5Board Layout
  9. 6Bill of Materials and Schematic
    1. 6.1 Schematic Drawing
  10. 7Revision History

1 Introduction

The Texas Instruments TPS74x01EVM-177 evaluation module uses the TPS74701 or TPS74801 low-dropout linear regulator device. These regulators require a low-power bias voltage, VBIAS, and a power input voltage, VIN. These two regulators are capable of providing output voltages down to 0.8 V and have an integrated supervisory circuit with open-drain output that goes to high impedance when the output voltage reaches regulation (power good or PG). The TPS74701 and TPS74801 can provide up to 0.5 A and 1.5 A of output current, respectively, and each has a soft start (SS) pin which allows the user to set the linear ramp rate for the output voltage at start-up. The purpose of the EVM is to facilitate evaluation of the TPS74x01 devices.