Model Selection Guide
Model
Number
A301RU
A302RU
A303RU
A304RU
A305RU
A306RU
A311RU
A312RU
A313RU
A314RU
A315RU
A316RU
Voltage (VDC)
Nominal
24
24
24
24
24
24
48
48
48
48
48
48
Range
9.0 - 36.0
9.0 - 36.0
9.0 - 36.0
9.0 - 36.0
9.0 - 36.0
9.0 - 36.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
Input
Current (mA)
www.micropowerdirect.com
Output
Fuse Rating
Reflected
Efficiency
Slow-Blow
Current
Ripple Voltage Current
(%, Typ)
(mA)
(VDC) (mA, Max) (mA, Min)
Full-Load No-Load Current
(mA, Typ)
138
158
154
152
156
156
68
78
75
74
76
76
20
20
20
20
20
20
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
3.3
5.0
12.0
15.0
±12.0
±15.0
3.3
5.0
12.0
15.0
±12.0
±15.0
750
600
250
200
±125
±100
750
600
250
200
±125
±100
93.0
75.0
32.0
25.0
±16.0
±13.0
93.0
75.0
32.0
25.0
±16.0
±13.0
75
79
81
82
80
80
76
80
83
84
82
82
1,000
1,000
1,000
1,000
1,000
1,000
500
500
500
500
500
500
Notes:
1. When measuring output ripple, it is recommended that an external 0.47 µF ceramic capacitor be
placed from the +Vout pin to the -Vout pin for single output units and from each output to common
for dual output units. For noise sensitive applications, the use of 3.3 µF capacitors will reduce the
output ripple.
2. Transient recovery is measured to within a 1% error band for a load step change of 75% to 100%.
3. Operation at no-load will not damage these units. However, they may not meet all specifications.
4. Dual output units may be connected to provide a 24 VDC or 30 VDC output. To do this, connect the
load across the positive (+Vout) and negative (-Vout) outputs and float the output common.
5. The converter should be connected to a low ac-impedance source. An input source with a highly
inductive impedance may affect the stability of the converter. In applications where the converter
output loading is high and input power is supplied over long lines, it may be necessary to use a
capacitor on the input to insure start-up.
In this case, it is recommended that a low ESR (ESR <1.0 at 100 kHz) capacitor be mounted
close to the converter. For 24V input units a 4.7 µF is recommended; and for 48V units a 2.2 µF.
6. It is recommended that a fuse be used on the input of a power supply for protection. See the table
above for the correct rating.
Derating Curve
Capacitive Load
Vout
3.3 VDC
5 VDC
12 VDC
15 VDC
Maximum
Load
Capacitance
680
µF
470
µF
330
µF
220
µF
Vout
±12
VDC
±15
VDC
Maximum
Load
Capacitance
150
µF
100
µF
Mechanical Dimensions
Pin Connections
Pin
2, 3
9
11
14
16
22, 23
Single
-Vin
No Pin
NC
+Vout
-Vout
+Vin
Dual
-Vin
Common
-Vout
+Vout
Common
+Vin
NC: No Connection
Mechanical Notes:
MicroPower Direct
We Power Your Success - For Less!
292 Page Street Ste D Stoughton, MA 02072
•
•
All dimensions are typical in inches (mm)
•
Tolerance x.xx = ±0.01 (±0.25)
TEL: (781) 344-8226
•
FAX: (781) 344-8481
•
E-Mail: sales@micropowerdirect.com
MPD [ MICROPOWER DIRECT, LLC ]
