RT9012-FMPQV datasheet(10/11 Pages) RICHTEK

Part #	RT9012-FMPQV

Description	300mA Dual LDO Regulator with POR

PDF	11 Pages

Scroll/Zoom	100%

Manufacturer	RICHTEK [Richtek Technology Corporation]

Direct Link	http://www.richtek.com

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10 / 11 page

RT9012

DS9012-09 April 2011

www.richtek.com

For recommended operating conditions specification of

RT9012, the maximum junction temperature is 125

°C. The

junction to ambient thermal resistance (

θJA is layout

dependent) for WDFN-8L 2x2 package is 108

°C/W on the

standard JEDEC 51-3 single-layer thermal test board. The

maximum power dissipation at TA= 25

°C can be calculated

by following formula :

PD(MAX) = ( 125

°C − 25°C ) / 108 = 0.926W for

WDFN-8L 2x2 packages

The maximum power dissipation depends on operating

ambient temperature for fixed TJ(MAX) and thermal

resistance

θJA . For RT9012 packages, the Figure 3 of

derating curves allows the designer to see the effect of

rising ambient temperature on the maximum power

allowed.

Figure 3. Derating Curves for RT9012 Packages

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

100

125

Ambient Temperature (

°C)

WDFN-8L 2x2

RT9012-FMPQV Datasheet(PDF) 10 Page - Richtek Technology Corporation