MCP1826ST-5002ESLASHEB datasheet(21/36 Pages) MICROCHIP

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MCP1826ST-5002E/EB 数据表(PDF) 21 Page - Microchip Technology

部件名	MCP1826ST-5002E/EB

功能描述	1000 mA, Low Voltage, Low Quiescent Current LDO Regulator

PDF	36 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

标志

21 / 36 page

DS22057A-page 21

MCP1826/MCP1826S

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 TO-220-5

package and the DDPAK-5 package.

TJ =TJRISE + TA(MAX)

TJ = 30.12°C + 60.0°C

TJ = 90.12°C

TO-220-5 (29.3° C/W R

θJA):

PD(MAX) = (125°C – 60°C) / 29.3°C/W

PD(MAX) = 2.218W

DDPAK-5 (31.2°C/Watt R

θJA):

PD(MAX) = (125°C – 60°C)/ 31.2°C/W

PD(MAX) = 2.083W

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