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參數(shù)資料
| 型號： | RT9199PS |
| 廠商： | Richtek Technology Corporation |
| 英文描述： | Cost-Effective, 2A Peak Sink/Source Bus Termination Regulator |
| 中文描述： | 成本效益，2A峰值匯/源總線終端穩(wěn)壓器 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大小： | 214K |
| 代理商： | RT9199PS |
RT9199
11
DS9199-07 September 2007
www.richtek.com
As shown in Figure 12, the amount of copper area to which the SOP-8 (Exposed Pad) is mounted affects thermal
performance. When mounted to the standard SOP-8 (Exposed Pad) pad of 2 oz. copper (Figure 12.a),
θ
JA
is 86
°
C/W.
Adding copper area of pad under the SOP-8 (Exposed Pad) (Figure 12.b) reduces the
θ
JA
to 73
°
C/W. Even further,
increasing the copper area of pad to 70mm
2
(Figure 12.d) reduces the
θ
JA
to 65
°
C/W.
Figure 12. Thermal Resistance vs. Copper Area Layout Thermal Design
(a) Copper Area = 10mm
2
,
θ
JA
= 86
°
C/W
(b) Copper Area = 30mm
2
,
θ
JA
= 73
°
C/W
(c) Copper Area = 50mm
2
,
θ
JA
= 68
°
C/W
(d) Copper Area = 70mm
2
,
θ
JA
= 65
°
C/W
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