MIC5256

Micrel

MIC5256

4

June 2003

power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The

θ

versions) is 235

°C/W on a PC board (see “Thermal Considerations” section for further details).

Note 4.

Devices are ESD sensitive. Handling precautions recommended.

Note 5.

Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load

range from 0.1mA to 150mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.

Note 6.

Dropout Voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V

differential. For outputs below 2.7V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.7V. Minimum

input operating voltage is 2.7V.

Note 7.

Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground

pin current.