Model Selection Guide
Model
Number
A301ERW
A302ERW
A303ERW
A304ERW
A305ERW
A311ERW
A312ERW
A313ERW
A314ERW
A315ERW
A321ERW
A322ERW
A323ERW
A324ERW
A325ERW
A331ERW
A332ERW
A333ERW
A334ERW
A335ERW
Voltage (VDC)
Nominal
5
5
5
5
5
12
12
12
12
12
24
24
24
24
24
48
48
48
48
48
Range
4.5 - 9.0
4.5 - 9.0
4.5 - 9.0
4.5 - 9.0
4.5 - 9.0
9.0 - 18.0
9.0 - 18.0
9.0 - 18.0
9.0 - 18.0
9.0 - 18.0
18.0 - 36.0
18.0 - 36.0
18.0 - 36.0
18.0 - 36.0
18.0 - 36.0
36.0 - 75.0
36.0 - 75.0
36.0 - 75.0
36.0 - 75.0
36.0 - 75.0
Input
Current (mA)
Full-Load
857
811
811
811
811
329
313
313
313
313
162
154
154
154
154
81
77
77
77
77
Output
Fuse Rating
Slow-Blow
(mA)
1,500
1,500
1,500
1,500
1,500
700
700
700
700
700
350
350
350
350
350
135
135
135
135
135
Reflected
Efficiency
Current
Ripple Voltage Current
(%, Typ)
(VDC) (mA, Max) (mA, Min)
No-Load Current
(mA, Typ)
40
40
40
40
40
20
20
20
20
20
5
5
5
5
5
3
3
3
3
3
100
100
100
100
100
30
30
30
30
30
15
15
15
15
15
10
10
10
10
10
5.0
12.0
15.0
±12.0
±15.0
5.0
12.0
15.0
±12.0
±15.0
5.0
12.0
15.0
±12.0
±15.0
5.0
12.0
15.0
±12.0
±15.0
600
250
200
±125
±100
600
250
200
±125
±100
600
250
200
±125
±100
600
250
200
±125
±100
60
25
20
±12
±10
60
25
20
±12
±10
60
25
20
±12
±10
60
25
20
±12
±10
70
74
74
74
74
76
80
80
80
80
77
81
81
81
81
77
81
81
81
81
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 out-
put. 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 <1.0Ω at 100 kHz)
capacitor be mounted close to the converter. For 5V input units a 8.2 µF is
recommended, for 12V input units, a 3.3 µF; and for 24V & 48V units a
1.5 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
Mechanical Dimensions
Pin Connections
Pin
1, 24
Single
+Vin
NC
NC
-Vout
+Vout
-Vin
Dual
+Vin
-Vout
Common
Common
+Vout
-Vin
Capacitive Load
Single Output Dual Output
(µF Max)
(µF Max)
2,000
±1,000
2, 23
3, 22
10, 15
11, 14
12, 13
NC: No Connection
Mechanical Notes:
•
All dimensions are typical in inches (mm)
•
Tolerance x.xx = ±0.01 (±0.25)
•
Leads are gold plated for improved solderability.
MicroPower Direct
www.micropowerdirect.com
•
292 Page Street Ste D Stoughton, MA 02072
TEL: (781) 344-8226
•
FAX: (781) 344-8481
•
E-Mail: sales@micropowerdirect.com
MPD [ MICROPOWER DIRECT, LLC ]
