RT8901PS datasheet(9/10 Pages) RICHTEK

Part #	RT8901PS

Description	35V Gate Pulse Modulator for LCD Panels

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Manufacturer	RICHTEK [Richtek Technology Corporation]

Direct Link	http://www.richtek.com

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9 / 10 page

RT8901

9

DS8901-03 October 2013

www.richtek.com

©

is a registered trademark of Richtek Technology Corporation.

For recommended operating conditions specification, the

maximum junction temperature is 125

°C. The junction to

ambient thermal resistance

θJA is layout dependent. For

SOP-8 package, the thermal resistance

θJA is 120°C/W

on the standard JEDEC 51-7 four layers thermal test board.

The maximum power dissipation at TA =25

°C can be

calculated by following formula :

PD(MAX) = ( 125

°C - 25°C ) / (120°C/W) = 0.833W for

SOP-8 package

The maximum power dissipation depends on operating

ambient temperature for fixed TJ(MAX) and thermal

resistance

θJA. The Figure 7 of derating curves allows the

designer to see the effect of rising ambient temperature

on the maximum power dissipation allowed.

Figure 7. Derating Curve

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

0

15304560

7590

105 120 135

Ambient Temperature (°C)

Four Layers PCB

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RT8901PS Datasheet(PDF) 9 Page - Richtek Technology Corporation

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