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BD00IA3WEFJ-E2 데이터시트(PDF) 5 Page - Rohm |
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BD00IA3WEFJ-E2 데이터시트(HTML) 5 Page - Rohm |
5 / 12 page www.rohm.com 2010.04 - Rev.A © 2010 ROHM Co., Ltd. All rights reserved. BD00HA3WEFJ Technical Note 5/11 ● Heat Dissipation Characteristics ◎ HTSOP-J8 ● About Input-to-output capacitor It is recommended that a capacitor is placed nearby pin between Input pin and GND, output pin and GND. A capacitor, between input pin and GND, is valid when the power supply impedance is high or drawing is long. Also as for a capacitor, between output pin and GND, the greater the capacity, more sustainable the line regulation and it makes improvement of characteristics by load change. However, please check by mounted on a board for the actual application. Ceramic capacitor usually has difference, thermal characteristics and series bias characteristics, and moreover capacity decreases gradually by using conditions. For more detail, please be sure to inquire the manufacturer, and select the best ceramic capacitor. -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 0 1 2 3 4 DC Bias Voltage [V] 10 Voltage resistance B1 characteristics GRM188B11A105KA61D 10 Voltage resistance B characteristics 6.3 Voltage resistance B characteristics 4 Voltage resistance X6S characteristics 10 Voltage resistance F characteristics 10 Voltage Resistance F characteristics Ceramic capacitor capacity- DC bias characteristics (Characteristics example) 0 25 50 75 100 125 150 0 2.0 3.0 4.0 ① 0.50W 周囲温度 :Ta [℃] 1.0 ① 0.50W ② 0.82W ③ 1.10W ④ 2.11W ⑤ 3.76W Measure condition: mounted on a ROHM board, and IC Substrate size: 70mm × 70mm × 1.6mm (Substrate with thermal via) ・ Solder the substrate and package reverse exposure heat radiation part ① IC only θ j-a=249.5℃/W ② 1-layer(copper foil are :0mm×0mm) θ j-a=153.2℃/W ③ 2-layer(copper foil are :15mm×15mm) θ j-a=113.6℃/W ④ 2-layer(copper foil are :70mm×70mm) θ j-a=59.2℃/W ⑤ 4-layer(copper foil are :70mm×70mm) θ j-a=33.3℃/W Ambient Temperature :Ta [℃] |
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