SRS-05A Datasheet, PDF (3/4 Pages) MicroPower Direct, LLC – SRS05A-xx SERIES

Derating Curves
SRS05A-05-3.3 - VIN = 5 VDC, VOUT = 3.3 VDC
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SRS05A-12-5.0 - VIN = 12 VDC, VOUT = 5.0 VDC
SRS05A-05-3.3 - VIN = 5 VDC, VOUT = 2.5 VDC
SRS05A-12-5.0 - VIN = 12 VDC, VOUT = 3.3 VDC
SRS05-05A-3.3 - VIN = 5 VDC, VOUT = 1.8 VDC
SRS05A-12-5.0 - VIN = 12 VDC, VOUT = 2.5 VDC
SRS05A-05-3.3 - VIN = 5 VDC, VOUT = 1.5 VDC
SRS05A-12-5.0 - VIN = 12 VDC, VOUT = 2.0 VDC
SRS05A-05-3.3 - VIN = 5 VDC, VOUT = 1.2 VDC
SRS05A-12-5.0 - VIN = 12 VDC, VOUT = 1.5 VDC
SRS05A-05-3.3 - VIN = 5 VDC, VOUT = 0.75 VDC
SRS05A-12-5.0 - VIN = 12 VDC, VOUT = 0.75 VDC
Temperature Measurement
These switching regulators may be used in a wide variety of thermal environments, but must
be properly cooled to ensure long reliable operation. The derating curves shown above are
approximations of the ambient temperature and airflow required to maintain the switching
regulator temperature below its maximum rating.
Airflow should move parallel to the long axis of the unit, as shown at left. Proper cooling can
be verified by measuring the temperature at pin six of Q1 (as shown at left). The thermocouple
should be mounted approximately 0.5 in. off the unit board. The temperature at this location
should not exceed 110°C.
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