Texas Instruments TPS7A8101 Low-Noise, High-Bandwidth PSRR, Low-Dropout 1-A Linear Regulator Evaluation Module TPS7A8101 TPS7A8101EVM-093 数据表

'

–

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.

1

Introduction

..................................................................................................................

2

Setup

.........................................................................................................................

2.1

Input/Output Connector Descriptions

............................................................................

3

TPS7A8101 Device Operation

............................................................................................

3.1

Test Procedure

.....................................................................................................

3.2

Test Data

............................................................................................................

4

Thermal Guidelines

.........................................................................................................

4.1

Thermal Considerations

...........................................................................................

5

Board Layout

................................................................................................................

5.1

Layout

...............................................................................................................

6

Schematic and Bill of Materials

...........................................................................................

6.1

Schematic

...........................................................................................................

6.2

Bill of Materials

....................................................................................................

1

TPS7A8101 PSRR for Variable Output Currents, VDO=0.7 V

........................................................

2

TPS7A8101 PSRR for Variable Dropout Voltage, Iout=1 A

...........................................................

3

TPS7A8101 Start-Up Into Full Load, 1 A

................................................................................

4

TPS7A8101 Shutdown with 3.3-

Ω

Load

.................................................................................

5

TPS7A8101 Transient Response

.........................................................................................

6

Top Layer Assembly

........................................................................................................

7

Top Layer Routing

..........................................................................................................

8

Bottom Layer Routing

......................................................................................................

9

TPS7A8101EVM Schematic

...............................................................................................

1

Maximum Input Voltage vs Ambient Temperature and Output Voltage

.............................................

2

Bill of Materials

.............................................................................................................

1

SLVU600

–

December 2011

Copyright

©

2011, Texas Instruments Incorporated