Texas Instruments TPS79801DCQEVM-434 User Manual Download Page 6 | Manualshive

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Schematic and Bill of Materials

6.1

Schematic

Schematic and Bill of Materials

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Figure 4. Bottom Layer Assembly

This section provides the TPS79801DCQEVM-434 schematic and bill of materials.

Figure 5. TPS79801DCQEVM-434 Schematic

TPS79801DCQEVM-434

6

SLUU346 – June 2009

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Summary of Contents for TPS79801DCQEVM-434

Page 1: ...ted circuit board layout drawings for the EVM Contents 1 Introduction 2 2 Setup 2 2 1 Input Output Connector Descriptions 2 3 Operation 3 3 1 Operation 3 3 2 Fixed Output TPS798xx 3 4 Thermal Guidelines 3 4 1 Thermal Considerations 3 5 Board Layout 4 6 Schematic and Bill of Materials 6 6 1 Schematic 6 6 2 Bill of Materials 7 List of Figures 1 Top Layer Assembly 4 2 Top Layer Routing 5 3 Bottom Lay...

Page 2: ...sient response of the TPS79801 and helps to reduce ringing on the input when long supply wires are used This is the positive connection from the output Connect this pin to the positive input of the load This is the return connection for the input power supply of the regulator This is the return connection for the output This jumper is used to enable or disable the output of the TPS79801 Placing a ...

Page 3: ...sion the integrated circuit IC on the board needs to be changed to the desired fixed output voltage TPS798xx R1 must be shorted or removed from the EVM board and replaced with a 0 Ω resistor C5 must be removed and left open Jumpers must not be installed on J6 for fixed output voltage version parts This section provides guidelines for the thermal management of the TPS79801DCQEM 434 board Thermal ma...

Page 4: ...junction temperature Similar analysis can be performed to determine the maximum input voltage at room temperature 25 C to provide full output current while maintaining the junction temperature at or below 125 C The answer depends on the output voltage Output Voltage Maximum Input Voltage 12 59 6 5 52 6 3 3 50 9 2 5 50 1 This section provides the TPS79801DCQEVM 434 board layout and illustrations Fi...

Page 5: ...www ti com Board Layout Figure 2 Top Layer Routing Figure 3 Bottom Layer Routing SLUU346 June 2009 TPS79801DCQEVM 434 5 Submit Documentation Feedback ...

Page 6: ...matic and Bill of Materials www ti com Figure 4 Bottom Layer Assembly This section provides the TPS79801DCQEVM 434 schematic and bill of materials Figure 5 TPS79801DCQEVM 434 Schematic TPS79801DCQEVM 434 6 SLUU346 June 2009 Submit Documentation Feedback ...

Page 7: ... STD Any 1 R2 23 2K Resistor Chip 1 16W 1 0603 STD Any 1 R3 66 5K Resistor Chip 1 16W 1 0603 STD Any 1 R4 124K Resistor Chip 1 16W 1 0603 STD Any 1 R5 205K Resistor Chip 1 16W 1 0603 STD Any 1 U1 TPS79801DCQ IC LDO Micropower Linear Regulator 3V 80V 50 mA SOT223 5 TPS79801DCQ TI 2 Shunt 100 mil Black 0 100 3M 929950 00 1 PCB 1 60 In 1 500 In 0 062 In HPA334 Any Notes 1 These assemblies are ESD sen...

Page 8: ...oduct This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or visit www ti com esh No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine process or combination in which such TI products ...

Page 9: ...ice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necessary expertis...

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