Texas Instruments Evaluation Module for TLV117125 TLV117125EVM-097 TLV117125EVM-097 Scheda Tecnica
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TLV117125EVM-097
User's Guide
SLVU684 – February 2012
TLV117125EVM-097 Evaluation Module
This User’s Guide describes the operational use of the TLV117125EVM-097 Evaluation Module (EVM) as
a reference design for engineering demonstration and evaluation of the TLV117125, low dropout linear
regulator (LDO). Included in this user’s guide are setup instructions, a schematic diagram, layout and
thermal guidelines, a bill of materials, and test results.
a reference design for engineering demonstration and evaluation of the TLV117125, low dropout linear
regulator (LDO). 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
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2
Setup
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2.1
Input/Output Connectors
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2.2
Soldering Guidelines
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2.3
Equipment Setup
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3
Operation
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4
Test Results
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4.1
Turn-on Waveform
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4.2
Load Transient
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4.3
PSRR
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5
Thermal Guidelines and Layout Recommendations
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6
Board layout
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7
Schematic
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8
Bill of Materials
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List of Figures
1
Turn-on Waveforms of the TLV117125EVM-097
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2
Load Step and Transient Response of the TLV117125EVM-097
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3
PSRR of the TLV117125EVM-097
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4
Assembly Layer
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5
Top Layer Routing
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6
Bottom Layer Routing
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7
TLV117125EVM-097 Schematic
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List of Tables
1
Thermal Resistance,
θ
JA
, and Maximum Power Dissipation
...........................................................
2
TLV117125EVM-097 Bill of Material
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1
Introduction
The Texas Instruments TLV117125EVM-097 EVM (referred to as the EVM for the remainder of this
document) helps design engineers evaluate the operation and performance of the TLV117125 family of
linear regulators for possible use in their own circuit application. This EVM configuration contains a single
linear regulator with internal thermal- and current-limit shutdown circuitry in a small SOT-223 package.
The regulator is capable of delivering up to 1 A to the load depending on the input-output power
dissipation across the part which can be minimized because of the very low dropout voltage. The input
and output capacitors for the TLV117125 need to be at least 1 µF (effective) for stability. An additional
output-capacitor pad is added to the EVM if a larger capacitance is desired.
document) helps design engineers evaluate the operation and performance of the TLV117125 family of
linear regulators for possible use in their own circuit application. This EVM configuration contains a single
linear regulator with internal thermal- and current-limit shutdown circuitry in a small SOT-223 package.
The regulator is capable of delivering up to 1 A to the load depending on the input-output power
dissipation across the part which can be minimized because of the very low dropout voltage. The input
and output capacitors for the TLV117125 need to be at least 1 µF (effective) for stability. An additional
output-capacitor pad is added to the EVM if a larger capacitance is desired.
1
SLVU684 – February 2012
TLV117125EVM-097 Evaluation Module
Copyright © 2012, Texas Instruments Incorporated