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MCP1824 데이터시트(PDF) 23 Page - Microchip Technology

부품명 MCP1824
상세설명  300 mA, Low Voltage, Low Quiescent Current LDO Regulator
PDF  34 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP1824 데이터시트(HTML) 23 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
DS22070A-page 23
MCP1824/MCP1824S
5.3.1.2
Junction Temperature Estimate
To estimate the internal junction temperature, the
calculated temperature rise is added to the ambient or
offset temperature. For this example, the worst-case
junction temperature is estimated below:
5.3.1.3
Maximum Package Power
Dissipation at 60°C Ambient
Temperature
From this table, you can see the difference in maximum
allowable power dissipation between the SOT-223-5
package and the SOT-23-5 package.
TJ =TJRISE + TA(MAX)
TJ = 19.1°C + 60.0°C
TJ =79.1°C
SOT-223-5 (62°C/W R
θJA):
PD(MAX) = (125°C – 60°C) / 62°C/W
PD(MAX) = 1.048W
SOT-23-5 (256°C/Watt R
θJA):
PD(MAX) = (125°C – 60°C)/ 256°C/W
PD(MAX) = 0.254W



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