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1 Introduction

User's Guide

SLVU130 – June 2005

TPS799xxEVM-105

This User’s Guide describes the characteristics, operation, and use of the

TPS799xxEVM-105 Evaluation Module (EVM). This EVM demonstrates three individual

configurations of the Texas Instruments TPS799xx low quiescent current, ultra-low

noise, high PSRR, low dropout linear regulator capable of supplying up to 200 mA of

output current. This User’s Guide includes setup instructions, a schematic diagram, a

bill of materials (BOM), and PCB layout drawings for the evaluation module.

Contents

1 Introduction .......................................................................................... 1

2 Setup ................................................................................................. 2

3 Board Layout ........................................................................................ 3

4 Schematic and Bill of Materials ................................................................... 7

List of Figures

1 Assembly Layer ..................................................................................... 4

2 Top Layer Routing .................................................................................. 5

3 Bottom Layer Routing .............................................................................. 6

4 TPS799xxEVM-105 Schematic ................................................................... 7

List of Tables

1 Device and Output Voltage Configurations ..................................................... 1

2 Minimum and Maximum Input Voltage ........................................................... 2

3 TPS799xxEVM-105 Bill of Materials ............................................................. 8

The Texas Instruments TPS799xxEVM-105 evaluation module (EVM) helps designers evaluate the

operation and performance of the TPS799xx family of linear regulators. These regulators are low

quiescent current, high PSRR, ultra-low noise, low dropout linear regulators.

The EVM contains three independent linear regulator DC/DC converters. The default output voltages of

the converters are listed in Table 1 .

Table 1. Device and Output Voltage Configurations

Converter IC Package Output Voltage Type

1 TPS79901DDC TO/SOT 1.60 Adjustable

2 TPS79918YZU CSP-5 chipscale 2.80 Fixed

3 TPS79901YZU CSP-5 chipscale 3.30 Adjustable

SLVU130 – June 2005 TPS799xxEVM-105 1

Summary of content (10 pages)

PAGE 1
User's Guide SLVU130 – June 2005 TPS799xxEVM-105 This User’s Guide describes the characteristics, operation, and use of the TPS799xxEVM-105 Evaluation Module (EVM). This EVM demonstrates three individual configurations of the Texas Instruments TPS799xx low quiescent current, ultra-low noise, high PSRR, low dropout linear regulator capable of supplying up to 200 mA of output current.
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www.ti.com Setup If desired, converters 1 and 3 on this EVM can be easily modified to supply higher or lower output voltages. The converter can be adjusted to provide an output voltage between 1.217 V and 6.34 V. Output voltages other than the default values may be evaluated by adjusting the appropriate feedback resistors. Also, other fixed output voltage versions of the devices can be easily evaluated using this EVM.
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www.ti.com Board Layout 2.3 Operation JP1, JP2, and JP3 are the enables for the converters and must be configured for proper operation of the converter. Use a shorting block to set JP1, JP2, and JP3 to the desired configurations. 3 Board Layout This chapter provides the TPS799xxEVM-105 board layout and illustrations.
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www.ti.com Board Layout 3.1 Layout Figure 1, Figure 2, and Figure 3 show the board layout for the TPS799xxEVM-105 PWB. Figure 1.
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www.ti.com Board Layout Figure 2.
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www.ti.com Board Layout Figure 3.
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www.ti.com Schematic and Bill of Materials 4 Schematic and Bill of Materials This chapter provides the TPS799xxEVM-105 schematic and bill of materials. 4.1 Schematic Figure 4.
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www.ti.com Schematic and Bill of Materials 4.2 Bill of Materials Table 3. TPS799xxEVM-105 Bill of Materials 4.3 COUNT Ref Des Description Size Part Number MFR 6 C1, C2, C3, C6, C8, C9 Capacitor, ceramic, 2.2-µF, 10-V, X5R, ±10% 0603 C1608X5R1A225KT TDK 1 C4 Capacitor, 0.1-µF, 10-V, X5R, ±10% 0402 C1005X5R1A104K TDK 2 C5, C7 Capacitor, ceramic, 10-pF, 50-V, C0G, 5% 0603 C1608C0G1H100D TDK 4 J1, J2, J3, J4 Header, 2-pin, 100mil spacing, (36-pin strip) 0.
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FCC Warnings This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference.
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