RT9168 Datasheet, PDF (9/13 Pages) List of Unclassifed Manufacturers – 200MA / 500MA FIXED OUTPUT VOLTAGE LDO REGULATOR

indefinite amount of time without damaging the part by
cooperation of current limit and thermal protection.
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 = I_OUT (V_IN - V_OUT).
The maximum power dissipation is: PMAX = (T_J - T_A)
/θ_JA
where T_J - T_A is the temperature difference between
the RT9168/A die junction and the surrounding
environment, θ_JA 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-03 May 2001
www.richtek-ic.com.tw
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