MIC5396 datasheet(10/26 Pages) MICROCHIP

номер детали	MIC5396

подробное описание детали	Low-Power Dual 300 mA LDO

PDF	26 Pages

Scroll/Zoom	100%

производитель	MICROCHIP [Microchip Technology]

домашняя страница	http://www.microchip.com

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10 / 26 page

MIC5396/7/8/9

DS20006264C-page 10



2019-2022 Microchip Technology Inc. and its subsidiaries

EQUATION 4-3:

Substituting PD for PD(MAX) and solving for the ambient

operating temperature will give the maximum operating

conditions

for

the

regulator

circuit.

The

junction-to-ambient thermal resistance for the

minimum footprint is 172.6°C/W.

The maximum power dissipation must not be exceeded

for proper operation.

For example, when operating a 3.3V/2.8V application

with an input voltage of 3.6V and 300 mA at each

output with a minimum footprint layout, the maximum

ambient operating temperature TA can be determined

as follows:

EQUATION 4-4:

Therefore, a MIC5396-SMYMX application with

300 mA at each output current can accept an ambient

operating temperature of 68.04°C in a 1.6 mm x

1.2 mm Extra Thin DFN package. For a full discussion

of heat sinking and thermal effects of voltage

regulators, refer to the "Regulator Thermals" section of

Designing with Low-Dropout Voltage Regulators

handbook.

PD MAX





TJ MAX





–

JA

--------------------------------









Where:

TJ(MAX) =

125°C

JA =

172.6°C/W

0.33W

125C TA

–





/ 172.6C/W





TA 68.04C

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