DC-DC Converter UNIT
SR Series
(0,5W TO 1W REGULATED DC-DC CONVERTER)
SIMPLIFIED SCHEMATIC
TYPICAL
APPLICATIONS
INPUT
+Vout
+Vin
+Vout
+Vin
OSCILLATOR
DRIVER
REGULATOR
OUTPUT
-Vin
-Vout
DC-DC
CONVERTER
-Vin
-Vout
LOAD
TYPICAL PERFORMANCE CUREVES
DERATING CURVE
1.2
EFFICIENCY VS LOAD
EFFICIENCY(%)
70
100
OUTPUT POWER(W)
0.9
0.6
0.3
0.0
-25
0
25
50
80.0
60.0
40.0
20.0
0.0
0
20
40
60
80
100
SAFE
OPERATING
AREA
TA(degree C)
% OF RATED LOAD(%)
SR SERIES APPLICATION NOTES:
EXTERNAL CAPACITANCE REQUIREMENTS:
No external capacitance is required for operation of the SR series.
To meet the reflected ripple requirements of the converter, an input impedance of less than 0.5 ohm
from DC to 250KHz is required.
External output capacitance is not required for operation, however it is recommended that 10uF
tantalum and 0.1uF ceramic capacitance be selected for reduced system noise.
Additional output capacitance may be added for increased filtering, but should not exceed 100uF.
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Version: 4-Oct-02
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