RT9168-15CBR Ver la hoja de datos (PDF) - Richtek Technology

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RT9168-15CBR

200mA/500mA Fixed Output Voltage LDO Regulator

Richtek Technology 

Operating Region and Power Dissipation

The maximum power dissipation of RT9168/A depends

on the thermal resistance of the case and circuit board,

the temperature difference between the die junction and

ambient air, and the rate of airflow. The power dissipation

across the device is P = IOUT (VIN - VOUT). The maximum

power dissipation is: PMAX = (TJ - TA) /θJA

where TJ - TA is the temperature difference between the

RT9168/A die junction and the surrounding environment,

θJA is the thermal resistance from the junction to the

surrounding environment. The GND pin of the RT9168/A

performs the dual function of providing an electrical

connection to ground and channeling heat away. Connect

the GND pin to ground using a large pad or ground plane.

RT9168/A

DS9168/A-15 March 2007

www.richtek.com

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