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User's Guide

SLVU461–May 2011

TLV8xxxEVM-019 Evaluation Modules

This user’s guide describes the characteristics, operation, and use of the TLV809K (TLV809KEVM-019),

TLV810S (TLV810SEVM-019), and TLV803S (TLV803SEVM-019) evaluation modules (EVM). The

TLV8xxxEVM is a fully assembled and tested platform for evaluating the performance of the TLV8xxx

family of supervisory circuits. The TLV809K, TLV810S, and TLV803S are single channel, 3-pin, 3.3-V

supply voltage supervisors (SVS) with built-in power-on reset generator with fixed delay time of 200ms.

This user’s guide includes setup configuration instructions, a complete schematic diagram, bill of materials

(BOM), and printed circuit board (PCB) layout drawings for the evaluation module.

Contents

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

2 Schematic .................................................................................................................... 2

3 Setup and Board Description .............................................................................................. 2

4 Operation ..................................................................................................................... 3

5 Board Layout ................................................................................................................ 4

6 Bill of Materials .............................................................................................................. 7

List of Figures

1 TLV8xxxEVM Rev A Schematic .......................................................................................... 2

2 Quick Start Connection Setup............................................................................................. 3

3 Timing Diagram for TLV8xxxEVM ........................................................................................ 4

4 Silkscreen Layer ............................................................................................................ 5

5 Assembly Layer ............................................................................................................. 5

6 Top Layer Routing .......................................................................................................... 6

7 Bottom Layer Routing ...................................................................................................... 6

List of Tables

1 Threshold voltage, V

, Values for Each TLV8xxxEVM ................................................................ 4

2 Bill of Materials .............................................................................................................. 7

3 Assembly Number and Corresponding Label Text ..................................................................... 7

1 Introduction

The TLV8xxxEVM helps designers evaluate the operation and performance of the TLV8xxx family of

single channel supervisors in a 3-pin SOT-23 package. This particular EVM configuration contains a single

SVS capable of supervising up to 6-V supply voltage. The TLV8xxx EVM is assembled with the TLV809K,

TLV810S, or TLV803S, all of which are 3.3-V supply voltage supervisors with threshold voltage, V

, of

2.93-V. To evaluate the TLV8xxx EVM with a different supply voltage, the IC will need to be replaced. The

TLV8xxx family of supervisory circuits provides initialization and timing supervision, primarily for DSPs and

processor-based systems; and, is available for supply voltages of 2.5-V, 3.0-V, 3.3-V, and 5.0-V.

1.1 Features

• Low supply current: 9 µA (typical)

• Power-on RESET / RESET generator with fixed delay time of 200ms

SLVU461– May 2011 TLV8xxxEVM-019 Evaluation Modules

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Summary of content (9 pages)

PAGE 1
User's Guide SLVU461 – May 2011 TLV8xxxEVM-019 Evaluation Modules This user’s guide describes the characteristics, operation, and use of the TLV809K (TLV809KEVM-019), TLV810S (TLV810SEVM-019), and TLV803S (TLV803SEVM-019) evaluation modules (EVM). The TLV8xxxEVM is a fully assembled and tested platform for evaluating the performance of the TLV8xxx family of supervisory circuits. The TLV809K, TLV810S, and TLV803S are single channel, 3-pin, 3.
PAGE 2
Schematic 1.2 Orderable Options • • • 2 www.ti.com TLV809KEVM-019: 3.3-V single channel supervisor with active low, push-pull RESET output TLV810SEVM-019: 3.3-V single channel supervisor with active high, push-pull RESET output TLV803SEVM-019: 3.3-V single channel supervisor with active low, open-drain RESET output Schematic Figure 1. TLV8xxxEVM Rev A Schematic 3 Setup and Board Description 3.
PAGE 3
Operation www.ti.com 3.2 Connection Setup Install jumper on JP1 for TLV803S only A Power Supply V V Figure 2. Quick Start Connection Setup 1. Connect the power supply and its return connection to J1 and J2 as shown above. 2. An ammeter can be connected in series with the power supply to measure the supply current. A voltmeter can also be connected across J1 and J2 to measure the effective voltage at the pins. 3.
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Board Layout www.ti.com Table 1. Threshold voltage, VIT, Values for Each TLV8xxxEVM VIT Part (1) 4.2 (1) Min (V) Typ (V) Max (V) TLV809K 2.87 2.93 2.99 TLV810S 2.87 2.93 2.99 TLV803S 2.87 2.93 2.99 VIT values taken from datasheet. Timing The TLV8xxx parts have a reset generator with a fixed delay time. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset.
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Board Layout www.ti.com Figure 4. Silkscreen Layer JP1 EVM P/N TEXAS INSTRUMENTS PWR019 REV. A J3 J1 RESET /RESET VDD U1 1 C1 R1 J2 J4 GND GND 2011 Figure 5.
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Board Layout www.ti.com Figure 6. Top Layer Routing Figure 7.
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Bill of Materials www.ti.com 6 Bill of Materials Table 2. Bill of Materials PWR019001 PWR019002 PWR019003 COUNT COUNT COUNT 1 1 4 4 0 RefDes Value Description Size Part Number MFR 1 C1 0.1uF Capacitor, Ceramic, 10V, X7R, 20% 0603 STD STD 4 J1, J2, J3, J4 PEC02SAAN Header, Male 2-pin, 100mil spacing 0.100 inch x 2 PEC02SAAN Sullins 0 1 JP1 PEC02SAAN Header, Male 2-pin, 100mil spacing 0.100 inch x 2 PEC02SAAN Sullins 0 0 1 R1 49.
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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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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.