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BD63940EFV Datasheet(PDF) 5 Page - Rohm |
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BD63940EFV Datasheet(HTML) 5 Page - Rohm |
5 / 9 page Technical Note 5/8 BD63940EFV, BD63960EFV www.rohm.com 2012.02 - Rev.A © 2012 ROHM Co., Ltd. All rights reserved. ● Power dissipation ○ HTSSOP-B24 Package (BD63940EFV/BD63960EFV)) HTSSOP-B24 has exposed metal on the back, and it is possible to dissipate heat from a through hole in the back. Also, the back of board as well as the surfaces has large areas of copper foil heat dissipation patterns, greatly increasing power dissipation. The back metal is shorted with the back side of the IC chip, being a GND potential, therefore there is a possibility for malfunction if it is shorted with any potential other than GND, which should be avoided. Also, it is recommended that the back metal is soldered onto the GND to short. Please note that it has been assumed that this product will be used in the condition of this back metal performed heat dissipation treatment for increasing heat dissipation efficiency. Ambient Temperature : Ta[℃] 3.0 2.0 1.0 100 125 4.0W 0 4 4.0 Measurement machine:TH156(Kuwano Electric) Measurement condition:ROHM board Board size:70*70*1.6mm 3 (With through holes on the board) The exposed metal of the backside is connected to the board with solder. Board①:1-layer board(Copper foil on the back 0mm 2) Board②:2-layer board(Copper foil on the back 15*15mm 2) Board③:2-layer board(Copper foil on the back 70*70mm 2) Board④:4-layer board(Copper foil on the back 70*70mm 2) Board①:θja =113.6℃/W Board②:θja =73.5℃/W Board③:θja =44.6℃/W Board④:θja =31.3℃/W Fig.2 HTSSOP-B24 Derating curve 2.8W 1.7W 1.1W 3 2 1 |
Similar Part No. - BD63940EFV_12 |
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Similar Description - BD63940EFV_12 |
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