MCP1827 datasheet(21/32 Pages) MICROCHIP

поискавой системы для электроныых деталей

MCP1827 датащи(PDF) 21 Page - Microchip Technology

номер детали	MCP1827

подробное описание детали	1.5A, Low Voltage, Low Quiescent Current LDO Regulator

PDF	32 Pages

Scroll/Zoom	100%

производитель	MICROCHIP [Microchip Technology]

домашняя страница	http://www.microchip.com

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21 / 32 page

DS22001C-page 21

MCP1827/MCP1827S

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:

As you can see from the result, this application will be

operating within the maximum operating junction

temperature of 125°C.

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 = 45.12°C + 60.0°C

TJ = 105.12°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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