Texas instruments TLV840EVM User Manual
User's Guide
SNVU704–February 2020
TLV840EVM Voltage Supervisor User Guide
This user guide describes the TLV840EVM evaluation module (EVM). This guide contains the EVM
schematic, bill of materials (BOM), assembly drawing, and top and bottom board layouts.
Contents
1 Introduction ................................................................................................................... 3
1.1 Related Documentation............................................................................................ 4
1.2 TLV840 Applications ............................................................................................... 4
2 Schematic, Bill of Materials, and Layout ................................................................................. 4
2.1 TLV840EVM Schematic............................................................................................ 5
2.2 TLV840EVM Bill of Materials...................................................................................... 6
2.3 Layout and Component Placement............................................................................... 7
3 EVM Connectors............................................................................................................. 9
3.1 EVM Test Points .................................................................................................... 9
3.2 EVM Jumpers ....................................................................................................... 9
4 EVM Setup and Operation ............................................................................................... 10
4.1 Input Power (V
4.2 Monitoring Voltage on VDD...................................................................................... 10
4.3 Reset Output (RESET) ........................................................................................... 11
4.4 Reset Time Delay Programming (Program t
).................................................................................................. 10
DD
via CT)........................................................ 11
D
List of Figures
1 TLV840EVM Board Top .................................................................................................... 3
2 TLV840EVM Board Bottom................................................................................................. 4
3 TLV840EVM Schematic .................................................................................................... 5
4 Component Placement—Top Assembly.................................................................................. 7
5 Component Placement—Bottom Assembly.............................................................................. 7
6 Layout—Top.................................................................................................................. 7
7 Layout—Bottom.............................................................................................................. 7
8 Top Layer ..................................................................................................................... 7
9 Bottom Layer ................................................................................................................. 7
10 Top Solder Mask............................................................................................................. 8
11 TLV840EVM RESET Asserted Due to MR Pulled Low ............................................................... 10
12 TLV840EVM RESET Deasserted Due to MR Pulled High, C
Floating............................................. 10
T
13 TLV840EVM Glitch Immunity............................................................................................. 10
14 TLV840EVM RESET Delay Time (tD) with C
15 TLV840EVM RESET Delay Time (tD) with C
16 TLV840EVM RESET Delay Time (tD) with C
Tied to GND Through 0.1-µF Capacitor........................... 12
T
Tied to GND Through 0.01-µF Capacitor ......................... 12
T
Floating................................................................ 12
T
List of Tables
1 BOM .......................................................................................................................... 6
2 Test Points.................................................................................................................... 9
3 List of Onboard Jumpers ................................................................................................... 9
4 Nominal Supply and Typical Threshold Voltages...................................................................... 10
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TLV840EVM Voltage Supervisor User Guide
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Trademarks
All trademarks are the property of their respective owners.
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TLV840EVM Voltage Supervisor User Guide
Copyright © 2020, Texas Instruments Incorporated
SNVU704–February 2020
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1 Introduction
The TLV840EVM is an evaluation module (EVM) for the TLV840 voltage supervisor. The TLV840EVM can
be used with any TLV840 device variant but note that if using the push-pull variants (TLV840PLXX or
TLV840PHXX), the shunt on J2 must be removed as push-pull devices do not use a pull-up resistor so R1
must be disconnected. If using TLV840EVM with the active-high variant (TLV840PHXX), the active-low
RESET label on the EVM board and throughout this user guide becomes active-high RESET. The TLV840
has a supply voltage range of 0.7 V to 6 V, and offers input connections for all device input and output
pins. Test points are provided to give the user access to an extra ground connection if needed for
oscilloscope or multimeter measurements.
Introduction
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Figure 1. TLV840EVM Board Top
TLV840EVM Voltage Supervisor User Guide
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Introduction
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Figure 2. TLV840EVM Board Bottom
1.1 Related Documentation
TLV840 Nano-Power, Ultra-Low Voltage Supervisor with Ajustable Reset Time Delay data sheet,
SBVSBC3
1.2 TLV840 Applications
• Motor Drives
• Factory Automation and Control
• Home Theater and Entertainment
• Electronic Point of Sale
• Grid Infrastructure
• Data Center and Enterprise Computing
• Multifunction Printer
2 Schematic, Bill of Materials, and Layout
This section provides a detailed description of the TLV840EVM schematic, bill of materials (BOM), and
layout.
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TLV840EVM Voltage Supervisor User Guide
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2.1 TLV840EVM Schematic
Schematic, Bill of Materials, and Layout
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Figure 3. TLV840EVM Schematic
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Schematic, Bill of Materials, and Layout
2.2 TLV840EVM Bill of Materials
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Table 1. BOM
DESIGNATOR QTY VALUE DESCRIPTION
!PCB 1 Printed Circuit Board TLV840EVM Any
C1, C2 2 0.1 µF CAP, CERM, 0.1 µF, 16 V, ±
C3 1 0.01 µF CAP, CERM, 0.01 uF, 16 V, +/-
H1, H2, H3, H4 4 Bumpon, Hemisphere, 0.44 X
J1, J2, J3, J5, J6 5 Header, 100mil, 2x1, TH Header, 2x1,
J4 1 Header, 100mil, 3x1, TH Header, 3x1,
R1 1 10.5k RES, 10.5 k, 1%, 0.1 W, 0603 0603 RC0603FR-0710K5L Yageo America
SH-J1, SH-J2 2 Shunt, 100mil, Tin plated, Black Shunt
TP1, TP2, TP3,
TP4, TP5
U1 1 Ultra-Low Voltage Supervisor
FID1, FID2, FID3 0 Fiducial mark. There is nothing
5 Test Point, Miniature, SMT Test Point,
10%, X7R, 0603
10%, X7R, 0603
0.20, Clear
with Adjustable Reset Time
Delay and Manual Reset Option
to buy or mount.
PACKAGE
REFERENCE
0603 C0603C104K4RACTUKemet
0603 C0603C103K4RACTUKemet
Transparent
Bumpon
100mil, TH
100mil, TH
Connector Black
Open Top, 2x1
Miniature, SMT
SOT23-5 TLV840MADL13DBVRTexas Instruments
Fiducial N/A N/A
PART NUMBER MANUFACTURER
SJ-5303 (CLEAR) 3M
800-10-002-10001000
800-10-003-10001000
SNT-100-BK-T-H Samtec
5019 Keystone
Mill-Max
Mill-Max
6
TLV840EVM Voltage Supervisor User Guide
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