Datasheet

User's Guide
SLVU600–December 2011
TPS7A8101EVM Evaluation Module
This user’s guide describes the characteristics, operation, and use of the TPS7A8101EVM. This
evaluation module (EVM) demonstrates the Texas Instruments TPS7A8101 low-dropout (LDO) linear
regulator in a 3-mm x 3-mm, SON-8 package, which is capable of a 1-A output current. This user’s guide
includes setup instructions, a schematic diagram, thermal guidelines, a bill of materials, and printed-circuit
board layout drawings for the evaluation module.
Contents
1 Introduction .................................................................................................................. 2
2 Setup ......................................................................................................................... 2
2.1 Input/Output Connector Descriptions ............................................................................ 2
3 TPS7A8101 Device Operation ............................................................................................ 3
3.1 Test Procedure ..................................................................................................... 3
3.2 Test Data ............................................................................................................ 3
4 Thermal Guidelines ......................................................................................................... 6
4.1 Thermal Considerations ........................................................................................... 6
5 Board Layout ................................................................................................................ 7
5.1 Layout ............................................................................................................... 7
6 Schematic and Bill of Materials ........................................................................................... 9
6.1 Schematic ........................................................................................................... 9
6.2 Bill of Materials .................................................................................................... 10
List of Figures
1 TPS7A8101 PSRR for Variable Output Currents, VDO=0.7 V........................................................ 3
2 TPS7A8101 PSRR for Variable Dropout Voltage, Iout=1 A........................................................... 4
3 TPS7A8101 Start-Up Into Full Load, 1 A ................................................................................ 4
4 TPS7A8101 Shutdown with 3.3-Ω Load ................................................................................. 5
5 TPS7A8101 Transient Response ......................................................................................... 6
6 Top Layer Assembly........................................................................................................ 7
7 Top Layer Routing .......................................................................................................... 8
8 Bottom Layer Routing ...................................................................................................... 8
9 TPS7A8101EVM Schematic............................................................................................... 9
List of Tables
1 Maximum Input Voltage vs Ambient Temperature and Output Voltage ............................................. 6
2 Bill of Materials............................................................................................................. 10
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SLVU600– December 2011 TPS7A8101EVM Evaluation Module
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