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User's Guide

SLVU554–October 2011

TLV70130EVM-077

This user’s guide describes operational use of the TLV70130EVM-077 evaluation module (EVM) as a

reference design for engineering demonstration and evaluation of the TLV70130, low-dropout (LDO) linear

regulator. Included in this user’s guide are setup instructions, a schematic diagram, layout and thermal

guidelines, a bill of materials, and test results.

Contents

1 Introduction .................................................................................................................. 2

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

2.1 Input/Output Connectors and Jumper Descriptions ........................................................... 2

2.2 Equipment Setup ................................................................................................... 2

3 Operation ..................................................................................................................... 2

4 Test Results ................................................................................................................. 2

4.1 Turnon Sequence .................................................................................................. 3

4.2 Output Load Transient ............................................................................................. 3

5 Thermal Guidelines and Layout Recommendations ................................................................... 4

6 Board Layout ................................................................................................................ 6

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

7.1 Schematic ........................................................................................................... 7

7.2 Bill of Materials ..................................................................................................... 8

List of Figures

1 Start-Up Sequence ......................................................................................................... 3

2 Load Step and Transient Response...................................................................................... 4

3 Top-Layer Silkscreen ....................................................................................................... 6

4 Top-Layer Routing .......................................................................................................... 6

5 Bottom-Layer Routing ...................................................................................................... 7

6 TLV70130EVM-077 Schematic ........................................................................................... 7

List of Tables

1 Thermal Dissipation Rating................................................................................................ 5

2 TLV70130EVM-077 Bill of Materials...................................................................................... 8

SLVU554–October 2011 TLV70130EVM-077

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Summary of content (14 pages)

PAGE 1
User's Guide SLVU554 – October 2011 TLV70130EVM-077 This user’s guide describes operational use of the TLV70130EVM-077 evaluation module (EVM) as a reference design for engineering demonstration and evaluation of the TLV70130, low-dropout (LDO) linear regulator. Included in this user’s guide are setup instructions, a schematic diagram, layout and thermal guidelines, a bill of materials, and test results. 1 2 3 4 5 6 7 Contents Introduction ..............................................................
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Introduction 1 www.ti.com Introduction The Texas Instruments TLV70130EVM-077 EVM helps design engineers to evaluate the operation and performance of the TLV701xx family of linear regulators for possible use in their own circuit applications. This particular EVM configuration contains a single linear regulator with internal current limit. The TLV701xx series of LDO regulators exhibit ultralow quiescent current that is virtually constant over the complete range of load and thermal specifications.
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Test Results www.ti.com 4.1 Turnon Sequence Figure 1 shows the turnon characteristic where VIN is switched on to 5 V and the output drives a 100-mA load. The output (C1, red) shows a fairly monotonic rise time of approximately 120 ms. Figure 1. Start-Up Sequence 4.2 Output Load Transient Figure 2 shows the load transient response (OUT - C1, yellow) for a full-load step transient from 0 mA to 150 mA (C4, green). VIN is set at 5 V.
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Thermal Guidelines and Layout Recommendations www.ti.com Figure 2. Load Step and Transient Response 5 Thermal Guidelines and Layout Recommendations Thermal management is a key component of design of any power converter and is especially important when the power dissipation in the LDO regulator is high.
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Thermal Guidelines and Layout Recommendations www.ti.com Table 1. Thermal Dissipation Rating (1) Board Package RθJA TA ≤ 25°C Power Rating TA = 70°C Power Rating (TA = 85°C) Power Rating High-K (1) DBV 213.1°C/W 470 mW 258 mW 188 mW The JEDEC High-K (2s2p) board design used to derive this data was 3-inch × 3-inch, multilayer board with 1-ounce internal power and ground planes and 2-ounce copper traces on top and bottom of the board.
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Board Layout 6 www.ti.com Board Layout Figure 3. Top-Layer Silkscreen Figure 4.
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Schematic and Bill of Materials www.ti.com Figure 5. Bottom-Layer Routing 7 Schematic and Bill of Materials 7.1 Schematic J2 1 VOUT 3.0 @ 150mA 2 U1 TLV70130DBV 1 OUT J1 VIN 3.1V - 24.0V NC 5 2 GND 1 3 IN 2 NC 4 C1 C2 1.0uF 1.0uF J4 J3 1 1 GND 2 GND 2 Figure 6.
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Schematic and Bill of Materials 7.2 www.ti.com Bill of Materials Table 2. TLV70130EVM-077 Bill of Materials Count RefDes Value Description Size Part Number MFR 1 C1 1.0uF Capacitor, Ceramic, 35V, X7R, 10% 0805 STD STD 1 C2 1.0uF Capacitor, Ceramic, 10V, X7R, 10% 0805 STD STD 4 J1-4 PEC02SAAN Header, 2-pin, 100mil spacing 0.
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Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
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EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods.
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FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
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【Important Notice for Users of this Product in Japan】】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
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EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.