Texas Instruments TPS3839K33 Evaluation Module TPS3839K33EVM-112 TPS3839K33EVM-112 Scheda Tecnica
Codici prodotto
TPS3839K33EVM-112
User's Guide
SLVU758 – July 2012
TPS3839K33EVM-112 Evaluation Module
This User’s Guide describes the operational use of the TPS3839K33EVM-112 Evaluation Module (EVM)
as a reference design for engineering demonstration and evaluation of the TPS3839K33, ultra-low power
3-pin supervisory circuit. Included in this user’s guide are setup instructions, a schematic diagram, PCB
layout drawings, and a bill of materials for the evaluation module.
as a reference design for engineering demonstration and evaluation of the TPS3839K33, ultra-low power
3-pin supervisory circuit. Included in this user’s guide are setup instructions, a schematic diagram, PCB
layout drawings, and a bill of materials for the evaluation module.
1
Introduction
The Texas Instruments TPS3839K33EVM-112 EVM helps design engineers to evaluate the operation and
performance of the TPS3839yxx family of supervisors for possible use in their own circuit application. This
particular EVM configuration contains the TPS3839K33 supervisor with an internal push-pull RESET
output, in a 1 x 1mm DQN µSON package. The TPS3839yxx is an ultra- low quiescent current,
supervisory circuit with a fixed threshold voltage. The threshold voltage is indicated by the last two digits of
the part number, with 33 indicating the fixed 3.3 V version and other values indicating various fixed
thresholds. This document describes the configuration and set up of the TPS3839K33EVM-112 EVM
board.
performance of the TPS3839yxx family of supervisors for possible use in their own circuit application. This
particular EVM configuration contains the TPS3839K33 supervisor with an internal push-pull RESET
output, in a 1 x 1mm DQN µSON package. The TPS3839yxx is an ultra- low quiescent current,
supervisory circuit with a fixed threshold voltage. The threshold voltage is indicated by the last two digits of
the part number, with 33 indicating the fixed 3.3 V version and other values indicating various fixed
thresholds. This document describes the configuration and set up of the TPS3839K33EVM-112 EVM
board.
2
Setup
This section describes the connectors on the EVM as well as how to properly connect, setup, and use the
TPS3839K33EVM-112.
TPS3839K33EVM-112.
2.1
Input and Output Connector Descriptions
2.1.1
J1 – VDD
This connector is the power supply connection and the signal that is being monitored by the TPS3839K33.
RST should transition low when the power supply voltage drops below its threshold.
RST should transition low when the power supply voltage drops below its threshold.
2.1.2
J2 – GND
Return connector for the input power supply.
2.1.3
J3 – RST
This connector is the RST output. Connect this output to a multimeter, oscilloscope, or external circuit to
verify that RST goes low when VDD goes below its threshold.
verify that RST goes low when VDD goes below its threshold.
2.2
Equipment Setup and Test
•
Set the power supply voltage to 0 V. Connect the positive voltage lead from the power supply to J1
(VDD). Connect the ground lead from the power supply to J2 (GND).
(VDD). Connect the ground lead from the power supply to J2 (GND).
•
Connect a voltmeter across J3 (RST) and J2 (GND).
•
Vary the power supply voltage as necessary for test purposes.
1
SLVU758 – July 2012
TPS3839K33EVM-112 Evaluation Module
Copyright © 2012, Texas Instruments Incorporated