APL531230S5I-TRG datasheet(9/15 Pages) ANPEC

Part #	APL531230S5I-TRG

Description	Ultra-Low-Noise, High PSRR, Low-Dropout, 300mA Linear Regulator

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Manufacturer	ANPEC [Anpec Electronics Coropration]

Direct Link	http://www.anpec.com.tw

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9 / 15 page

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Rev. A.4 - Jun., 2009

APL5312

www.anpec.com.tw

9

Application Information (Cont.)

Recommended Minimum Footprint

Operating Region and Power Dissipation (Cont.)

is the thermal resistance between Junction and ambient

air. For continual operation, do not exceed the absolute

maximum junction Temperature rating of T

J = 125°C.

For example:

The SOT-23-5 package has maximum power dissipa-

tion 300mW at T

A= 55°C, relatively 225mW at SC-70-5

package (see Maximum Power Dissipation vs. Ambient

Temperature).

V

IN = 5V, IOUT = 250mA, VOUT = 3.3V,

P

D = (5-3.3)V x 150mA = 255mW

According the power dissipation issue, we should adapt

the SOT-23-5 package. It could reduce the thermal

resistance to maintain the IC longer life.

The GND pin provides an electrical connection to the

ground and channeling heat away. The printed circuit

board (PCB) forms a heat sink and dissipates most of

the heat into ambient air.

0.02

0.038

0.076

Unit : Inch

0.016

0.026

0.052

Unit : Inch

SOT-23-5

SC-70-5

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APL531230S5I-TRG Datasheet(PDF) 9 Page - Anpec Electronics Coropration

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