Manufacturers > Texas Instruments > Application Notes > AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)

AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)

Texas Instruments

Published Date: 04/23/2013

Description

This thermal application report provides guidelines for the optimal board layout to achieve the best thermal resistance for exposed packages. The thermal resistance between junction-to-ambient (?JA)

Parts

Part Number Name Companion Part
LM22670TJ-5.0/NOPB LM22670TJ-5.0/NOPB Buy Datasheet
LM22670TJ-ADJ/NOPB LM22670TJ-ADJ/NOPB Buy Datasheet
LM22671MRX-5.0/NOPB LM22671MRX-5.0/NOPB Buy Datasheet
LM22671QMR-ADJ/NOPB LM22671QMR-ADJ/NOPB Buy Datasheet
LM22671QMRE-5.0/NOPB LM22671QMRE-5.0/NOPB Buy Datasheet
LM22671QMRX-ADJ/NOPB LM22671QMRX-ADJ/NOPB Buy Datasheet
LM22672MR-ADJ/NOPB LM22672MR-ADJ/NOPB Buy Datasheet
LM22672MRE-5.0/NOPB LM22672MRE-5.0/NOPB Buy Datasheet
LM22672MRX-ADJ/NOPB LM22672MRX-ADJ/NOPB Buy Datasheet
LM22672QMR-5.0/NOPB LM22672QMR-5.0/NOPB Buy Datasheet
LM22672QMRE-5.0/NOPB LM22672QMRE-5.0/NOPB Buy Datasheet
LM22672QMRE-ADJ/NOPB LM22672QMRE-ADJ/NOPB Buy Datasheet
LM22673MR-ADJ/NOPB LM22673MR-ADJ/NOPB Buy Datasheet
LM22673MRX-5.0/NOPB LM22673MRX-5.0/NOPB Buy Datasheet
LM22673QMR-ADJ/NOPB LM22673QMR-ADJ/NOPB Buy Datasheet
LM22673QMRE-5.0/NOPB LM22673QMRE-5.0/NOPB Buy Datasheet
LM22673QMRE-ADJ/NOPB LM22673QMRE-ADJ/NOPB Buy Datasheet
LM22673QTJ-ADJ/NOPB LM22673QTJ-ADJ/NOPB Buy Datasheet
LM22673TJ-5.0/NOPB LM22673TJ-5.0/NOPB Buy Datasheet
LM22673TJE-5.0/NOPB LM22673TJE-5.0/NOPB Buy Datasheet
LM22673TJE-ADJ/NOPB LM22673TJE-ADJ/NOPB Buy Datasheet
LM22674MRE-5.0/NOPB LM22674MRE-5.0/NOPB Buy Datasheet
LM22674MRE-ADJ/NOPB LM22674MRE-ADJ/NOPB Buy Datasheet
LM22674MRX-5.0/NOPB LM22674MRX-5.0/NOPB Buy Datasheet
LM22674MRX-ADJ/NOPB LM22674MRX-ADJ/NOPB Buy Datasheet
LM22674QMR-5.0/NOPB LM22674QMR-5.0/NOPB Buy Datasheet
LM22674QMRE-ADJ/NOPB LM22674QMRE-ADJ/NOPB Buy Datasheet
LM22675MR-5.0/NOPB LM22675MR-5.0/NOPB Buy Datasheet
LM22675MRE-ADJ/NOPB LM22675MRE-ADJ/NOPB Buy Datasheet
LM22675QMR-ADJ/NOPB LM22675QMR-ADJ/NOPB Buy Datasheet
LM22675QMRE-ADJ/NOPB LM22675QMRE-ADJ/NOPB Buy Datasheet
LM22675QMRX-ADJ/NOPB LM22675QMRX-ADJ/NOPB Buy Datasheet
LM22676MR-5.0/NOPB LM22676MR-5.0/NOPB Buy Datasheet
LM22676MRE-5.0/NOPB LM22676MRE-5.0/NOPB Buy Datasheet
LM22676QMR-5.0/NOPB LM22676QMR-5.0/NOPB Buy Datasheet
LM22676QMRE-5.0/NOPB LM22676QMRE-5.0/NOPB Buy Datasheet
LM22676QMRX-5.0/NOPB LM22676QMRX-5.0/NOPB Buy Datasheet
LM22676QMRX-ADJ/NOPB LM22676QMRX-ADJ/NOPB Buy Datasheet
LM22676QTJ-ADJ/NOPB LM22676QTJ-ADJ/NOPB Buy Datasheet
LM22676QTJE-ADJ/NOPB LM22676QTJE-ADJ/NOPB Buy Datasheet
LM22676TJE-ADJ/NOPB LM22676TJE-ADJ/NOPB Buy Datasheet
LM22677QTJE-5.0/NOPB LM22677QTJE-5.0/NOPB Buy Datasheet
LM22677TJ-5.0/NOPB LM22677TJ-5.0/NOPB Buy Datasheet
LM22677TJE-5.0/NOPB LM22677TJE-5.0/NOPB Buy Datasheet
LM22677TJE-ADJ/NOPB LM22677TJE-ADJ/NOPB Buy Datasheet
LM22678QTJ-5.0/NOPB LM22678QTJ-5.0/NOPB Buy Datasheet
LM22678QTJ-ADJ/NOPB LM22678QTJ-ADJ/NOPB Buy Datasheet
LM22678QTJE-ADJ/NOPB LM22678QTJE-ADJ/NOPB Buy Datasheet
LM22678TJ-5.0/NOPB LM22678TJ-5.0/NOPB Buy Datasheet
LM22678TJE-5.0/NOPB LM22678TJE-5.0/NOPB Buy Datasheet
LM22679QTJE-5.0/NOPB LM22679QTJE-5.0/NOPB Buy Datasheet
LM22679TJE-ADJ/NOPB LM22679TJE-ADJ/NOPB Buy Datasheet
LM22680MR-ADJ/NOPB LM22680MR-ADJ/NOPB Buy Datasheet
LM22680MRX-ADJ/NOPB LM22680MRX-ADJ/NOPB Buy Datasheet
LM22680QMR-ADJ/NOPB LM22680QMR-ADJ/NOPB Buy Datasheet
LM22680QMRX-ADJ/NOPB LM22680QMRX-ADJ/NOPB Buy Datasheet
LM25574Q0MTX/NOPB LM25574Q0MTX/NOPB Buy Datasheet
LM25576Q0MHX/NOPB LM25576Q0MHX/NOPB Buy Datasheet
LM2574HVM-12 LM2574HVM-12 Buy Datasheet
LM2574HVM-15/NOPB LM2574HVM-15/NOPB Buy Datasheet
LM2574HVM-5.0 LM2574HVM-5.0 Buy Datasheet
LM2574HVMX-12/NOPB LM2574HVMX-12/NOPB Buy Datasheet
LM2574HVMX-3.3/NOPB LM2574HVMX-3.3/NOPB Buy Datasheet
LM2574HVMX-5.0 LM2574HVMX-5.0 Buy Datasheet
LM2574HVMX-ADJ/NOPB LM2574HVMX-ADJ/NOPB Buy Datasheet
LM2574HVN-ADJ/NOPB LM2574HVN-ADJ/NOPB Buy Datasheet
LM2574M-12 LM2574M-12 Buy Datasheet
LM2574M-5.0/NOPB LM2574M-5.0/NOPB Buy Datasheet
LM2574M-ADJ/NOPB LM2574M-ADJ/NOPB Buy Datasheet
LM2574MX-ADJ LM2574MX-ADJ Buy Datasheet
LM2575IN LM2575IN Buy Datasheet
LM2576T-12 LM2576T-12 Buy Datasheet
LM2576T-5.0 LM2576T-5.0 Buy Datasheet
LM2576T-ADJ LM2576T-ADJ Buy Datasheet
LM2585SX-ADJ/NOPB LM2585SX-ADJ/NOPB Buy Datasheet
LM2585T-12/NOPB LM2585T-12/NOPB Buy Datasheet
LM2586S-12/NOPB LM2586S-12/NOPB Buy Datasheet
LM2586S-ADJ/NOPB LM2586S-ADJ/NOPB Buy Datasheet
LM2587S-5.0 LM2587S-5.0 Buy Datasheet
LM2587SX-ADJ/NOPB LM2587SX-ADJ/NOPB Buy Datasheet
LM2588S-5.0/NOPB LM2588S-5.0/NOPB Buy Datasheet
LM2588S-ADJ LM2588S-ADJ Buy Datasheet
LM2588SX-ADJ/NOPB LM2588SX-ADJ/NOPB Buy Datasheet
LM2590HVS-ADJ/NOPB LM2590HVS-ADJ/NOPB Buy Datasheet
LM2590HVSX5.0AQ LM2590HVSX5.0AQ Buy Datasheet
LM2590HVSX5.0AQ/NOPB LM2590HVSX5.0AQ/NOPB Buy Datasheet
LM2591HVS-ADJ/NOPB LM2591HVS-ADJ/NOPB Buy Datasheet
LM2591HVSX-5.0/NOPB LM2591HVSX-5.0/NOPB Buy Datasheet
LM2591HVT-5.0/NOPB LM2591HVT-5.0/NOPB Buy Datasheet
LM2591HVT-ADJ/NOPB LM2591HVT-ADJ/NOPB Buy Datasheet
LM2592HVS-3.3/NOPB LM2592HVS-3.3/NOPB Buy Datasheet
LM2592HVS-5.0/NOPB LM2592HVS-5.0/NOPB Buy Datasheet
LM2592HVS-ADJ/NOPB LM2592HVS-ADJ/NOPB Buy Datasheet
LM2592HVSX-3.3/NOPB LM2592HVSX-3.3/NOPB Buy Datasheet
LM2592HVSX-ADJ LM2592HVSX-ADJ Buy Datasheet
LM2592HVT-3.3/NOPB LM2592HVT-3.3/NOPB Buy Datasheet
LM2592HVT-ADJ/NOPB LM2592HVT-ADJ/NOPB Buy Datasheet
LM2593HVSX-3.3/NOPB LM2593HVSX-3.3/NOPB Buy Datasheet
LM2593HVSX-5.0/NOPB LM2593HVSX-5.0/NOPB Buy Datasheet
LM2593HVSX-ADJ/NOPB LM2593HVSX-ADJ/NOPB Buy Datasheet
LM2593HVT-5.0/NOPB LM2593HVT-5.0/NOPB Buy Datasheet
LM2594HVM-ADJ LM2594HVM-ADJ Buy Datasheet
LM2594HVM-ADJ/NOPB LM2594HVM-ADJ/NOPB Buy Datasheet
LM2594HVMX-3.3/NOPB LM2594HVMX-3.3/NOPB Buy Datasheet
LM2594HVMX-ADJ/NOPB LM2594HVMX-ADJ/NOPB Buy Datasheet
LM2594M-3.3/NOPB LM2594M-3.3/NOPB Buy Datasheet
LM2594MX-5.0/NOPB LM2594MX-5.0/NOPB Buy Datasheet
LM2595S-3.3 LM2595S-3.3 Buy Datasheet
LM2595S-5.0 LM2595S-5.0 Buy Datasheet
LM2595S-ADJ LM2595S-ADJ Buy Datasheet
LM2595S-ADJ/NOPB LM2595S-ADJ/NOPB Buy Datasheet
LM2595SX-ADJ/NOPB LM2595SX-ADJ/NOPB Buy Datasheet
LM2595T-ADJ/NOPB LM2595T-ADJ/NOPB Buy Datasheet
LM2596SX-ADJ/NOPB LM2596SX-ADJ/NOPB Buy Datasheet
LM2596T-5.0/LF03 LM2596T-5.0/LF03 Buy Datasheet
LM2596T-ADJ LM2596T-ADJ Buy Datasheet
LM2596T-ADJ/LB05 LM2596T-ADJ/LB05 Buy Datasheet
LM2596T-ADJ/NOPB LM2596T-ADJ/NOPB Buy Datasheet
LM2597HVM-5.0/NOPB LM2597HVM-5.0/NOPB Buy Datasheet
LM2597HVM-ADJ/NOPB LM2597HVM-ADJ/NOPB Buy Datasheet
LM2597HVMX-5.0/NOPB LM2597HVMX-5.0/NOPB Buy Datasheet
LM2597HVN-12/NOPB LM2597HVN-12/NOPB Buy Datasheet
LM2597HVN-ADJ/NOPB LM2597HVN-ADJ/NOPB Buy Datasheet
LM2597MX-3.3/NOPB LM2597MX-3.3/NOPB Buy Datasheet
LM2597MX-ADJ/NOPB LM2597MX-ADJ/NOPB Buy Datasheet
LM2597N-5.0/NOPB LM2597N-5.0/NOPB Buy Datasheet
LM2598S-12/NOPB LM2598S-12/NOPB Buy Datasheet
LM2598S-3.3/NOPB LM2598S-3.3/NOPB Buy Datasheet
LM2598SX-3.3/NOPB LM2598SX-3.3/NOPB Buy Datasheet
LM2599S-3.3 LM2599S-3.3 Buy Datasheet
LM2599S-5.0 LM2599S-5.0 Buy Datasheet
LM2599SX-12/NOPB LM2599SX-12/NOPB Buy Datasheet
LM2599SX-ADJ/NOPB LM2599SX-ADJ/NOPB Buy Datasheet
LM2670SD-ADJ/NOPB LM2670SD-ADJ/NOPB Buy Datasheet
LM2670SX-12/NOPB LM2670SX-12/NOPB Buy Datasheet
LM2670SX-3.3/NOPB LM2670SX-3.3/NOPB Buy Datasheet
LM2670SX-5.0/NOPB LM2670SX-5.0/NOPB Buy Datasheet
LM2670T-ADJ/NOPB LM2670T-ADJ/NOPB Buy Datasheet
LM2671LD-ADJ/NOPB LM2671LD-ADJ/NOPB Buy Datasheet
LM2671MX-ADJ/NOPB LM2671MX-ADJ/NOPB Buy Datasheet
LM2672M-3.3 LM2672M-3.3 Buy Datasheet
LM2672MX-5.0 LM2672MX-5.0 Buy Datasheet
LM2672N-12/NOPB LM2672N-12/NOPB Buy Datasheet
LM2672N-ADJ/NOPB LM2672N-ADJ/NOPB Buy Datasheet
LM2673S-12/NOPB LM2673S-12/NOPB Buy Datasheet
LM2673S-ADJ/NOPB LM2673S-ADJ/NOPB Buy Datasheet
LM2673SD-5.0/NOPB LM2673SD-5.0/NOPB Buy Datasheet
LM2673SD-ADJ/NOPB LM2673SD-ADJ/NOPB Buy Datasheet
LM2673SDX-3.3/NOPB LM2673SDX-3.3/NOPB Buy Datasheet
LM2673SX-ADJ/NOPB LM2673SX-ADJ/NOPB Buy Datasheet
LM2673T-12/NOPB LM2673T-12/NOPB Buy Datasheet
LM2673T-3.3/NOPB LM2673T-3.3/NOPB Buy Datasheet
LM2674LD-ADJ/NOPB LM2674LD-ADJ/NOPB Buy Datasheet
LM2674LDX-5.0/NOPB LM2674LDX-5.0/NOPB Buy Datasheet
LM2675LD-5.0 LM2675LD-5.0 Buy Datasheet
LM2675M-ADJ/NOPB LM2675M-ADJ/NOPB Buy Datasheet
LM2675MX-3.3 LM2675MX-3.3 Buy Datasheet
LM2675MX-3.3/NOPB LM2675MX-3.3/NOPB Buy Datasheet
LM2675MX-ADJ/NOPB LM2675MX-ADJ/NOPB Buy Datasheet
LM2676S-3.3 LM2676S-3.3 Buy Datasheet
LM2676S-ADJ/NOPB LM2676S-ADJ/NOPB Buy Datasheet
LM2676SD-ADJ/NOPB LM2676SD-ADJ/NOPB Buy Datasheet
LM2676SDX-5.0/NOPB LM2676SDX-5.0/NOPB Buy Datasheet
LM2676SDX-ADJ/NOPB LM2676SDX-ADJ/NOPB Buy Datasheet
LM2676T-ADJ/NOPB LM2676T-ADJ/NOPB Buy Datasheet
LM2677S-3.3 LM2677S-3.3 Buy Datasheet
LM2677S-3.3/NOPB LM2677S-3.3/NOPB Buy Datasheet
LM2677S-5.0 LM2677S-5.0 Buy Datasheet
LM2677S-ADJ/NOPB LM2677S-ADJ/NOPB Buy Datasheet
LM2677SX-12/NOPB LM2677SX-12/NOPB Buy Datasheet
LM2677SX-5.0 LM2677SX-5.0 Buy Datasheet
LM2677SX-ADJ LM2677SX-ADJ Buy Datasheet
LM2677SX-ADJ/NOPB LM2677SX-ADJ/NOPB Buy Datasheet
LM2677T-3.3/NOPB LM2677T-3.3/NOPB Buy Datasheet
LM2677T-5.0/NOPB LM2677T-5.0/NOPB Buy Datasheet
LM2678SD-5.0/NOPB LM2678SD-5.0/NOPB Buy Datasheet
LM2679S-3.3/NOPB LM2679S-3.3/NOPB Buy Datasheet
LM2679SDX-ADJ/NOPB LM2679SDX-ADJ/NOPB Buy Datasheet
LM2679T-12/NOPB LM2679T-12/NOPB Buy Datasheet
LM2825N-12/NOPB LM2825N-12/NOPB Buy Datasheet
LM2842XMKX-ADJL/NOPB LM2842XMKX-ADJL/NOPB Buy Datasheet
LM2842XQMKX/NOPB LM2842XQMKX/NOPB Buy Datasheet
LM2842YMKX-ADJL/NOPB LM2842YMKX-ADJL/NOPB Buy Datasheet
LM43600PWP LM43600PWP Buy Datasheet
LM43601PWPT LM43601PWPT Buy Datasheet
LM46002PWPR LM46002PWPR Buy Datasheet
LM46002PWPT LM46002PWPT Buy Datasheet
LM5576MH LM5576MH Buy Datasheet
LM5576MHX LM5576MHX Buy Datasheet
LM5576MHX/NOPB LM5576MHX/NOPB Buy Datasheet
LMR10510XMFE/NOPB LMR10510XMFE/NOPB Buy Datasheet
LMR10515XSD/NOPB LMR10515XSD/NOPB Buy Datasheet
LMR10515XSDE/NOPB LMR10515XSDE/NOPB Buy Datasheet
LMR10520XSD/NOPB LMR10520XSD/NOPB Buy Datasheet
LMR10520XSDX/NOPB LMR10520XSDX/NOPB Buy Datasheet
LMR10520YSD/NOPB LMR10520YSD/NOPB Buy Datasheet
LMR10520YSDE/NOPB LMR10520YSDE/NOPB Buy Datasheet
LMR10520YSDX/NOPB LMR10520YSDX/NOPB Buy Datasheet
LMR10530XSDX/NOPB LMR10530XSDX/NOPB Buy Datasheet
LMR10530YSDX/NOPB LMR10530YSDX/NOPB Buy Datasheet
LMR12007YMKX LMR12007YMKX Buy Datasheet
LMR12015XSDX/NOPB LMR12015XSDX/NOPB Buy Datasheet
LMR14006XDDCT LMR14006XDDCT Buy Datasheet
LMR14006YDDCR LMR14006YDDCR Buy Datasheet
LMR14006YDDCT LMR14006YDDCT Buy Datasheet
LMR62014XMFX/NOPB LMR62014XMFX/NOPB Buy Datasheet
LMZ10504EXTTZX/NOPB LMZ10504EXTTZX/NOPB Buy Datasheet
LMZ12001TZ-ADJ/NOPB LMZ12001TZ-ADJ/NOPB Buy Datasheet
LMZ12002TZ-ADJ/NOPB LMZ12002TZ-ADJ/NOPB Buy Datasheet
LMZ12003TZE-ADJ/NOPB LMZ12003TZE-ADJ/NOPB Buy Datasheet
LMZ13608TZ/NOPB LMZ13608TZ/NOPB Buy Datasheet
LMZ13608TZE/NOPB LMZ13608TZE/NOPB Buy Datasheet
LMZ13610TZE/NOPB LMZ13610TZE/NOPB Buy Datasheet
LMZ14201HTZX/NOPB LMZ14201HTZX/NOPB Buy Datasheet
LMZ14201TZE-ADJ/NOPB LMZ14201TZE-ADJ/NOPB Buy Datasheet
LMZ14201TZX-ADJ/NOPB LMZ14201TZX-ADJ/NOPB Buy Datasheet
LMZ14202HTZE/NOPB LMZ14202HTZE/NOPB Buy Datasheet
LMZ14202TZX-ADJ/NOPB LMZ14202TZX-ADJ/NOPB Buy Datasheet
LMZ14203HTZ/NOPB LMZ14203HTZ/NOPB Buy Datasheet
LMZ14203HTZE/NOPB LMZ14203HTZE/NOPB Buy Datasheet
LMZ14203HTZX/NOPB LMZ14203HTZX/NOPB Buy Datasheet
LMZ20501SILR LMZ20501SILR Buy Datasheet
LMZ20502SILT LMZ20502SILT Buy Datasheet
LMZ21701SILT LMZ21701SILT Buy Datasheet
LMZ22003TZE/NOPB LMZ22003TZE/NOPB Buy Datasheet
LMZ22005TZ/NOPB LMZ22005TZ/NOPB Buy Datasheet
LMZ22008TZ/NOPB LMZ22008TZ/NOPB Buy Datasheet
LMZ22010TZE/NOPB LMZ22010TZE/NOPB Buy Datasheet
LMZ23603TZX/NOPB LMZ23603TZX/NOPB Buy Datasheet
LMZ23608TZ/NOPB LMZ23608TZ/NOPB Buy Datasheet
LMZ31503RUQT LMZ31503RUQT Buy Datasheet
TPS84210RKGR TPS84210RKGR Buy Datasheet
TPS84210RKGT TPS84210RKGT Buy Datasheet
TPS84250RKGR TPS84250RKGR Buy Datasheet
TPS84250RKGT TPS84250RKGT Buy Datasheet
TPS84259RKGR TPS84259RKGR Buy Datasheet
TPS84259RKGT TPS84259RKGT Buy Datasheet
TPS84320RUQR TPS84320RUQR