Model Selection Guide
Input
Current (mA)
Output
Fuse Rating
Slow-Blow
(mA)
Voltage (VDC)
Model
Reflected
Ripple
Current
(mA, Typ)
Efficiency
(%, Typ)
Voltage Current
(VDC) (mA, Max) (mA, Min)
Current
Number
Nominal
Range
Full-Load No-Load
A301ERW
A302ERW
A303ERW
A304ERW
A305ERW
A311ERW
A312ERW
A313ERW
A314ERW
A315ERW
A321ERW
A322ERW
A323ERW
A324ERW
A325ERW
A331ERW
A332ERW
A333ERW
A334ERW
A335ERW
5
5
5
5
4.5 - 9.0
4.5 - 9.0
4.5 - 9.0
4.5 - 9.0
4.5 - 9.0
857
811
811
811
811
329
313
313
313
313
162
154
154
154
154
81
40
40
40
40
40
20
20
20
20
20
5
5
5
5
5
3
3
3
3
100
100
100
100
100
30
30
30
30
30
15
15
15
15
15
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
1,500
1,500
1,500
1,500
1,500
700
700
700
700
700
350
350
350
350
350
135
135
135
5
12
12
12
12
12
24
24
24
24
24
48
48
48
48
48
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
77
77
77
77
10
10
135
135
3
Notes:
Derating Curve
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.
Mechanical Dimensions
Pin Connections
Pin
Single
+Vin
NC
Dual
1, 24
+Vin
Capacitive Load
2, 23
-Vout
Single Output Dual Output
3, 22
NC
Common
Common
+Vout
-Vin
(µF Max)
(µF Max)
10, 15
11, 14
12, 13
-Vout
+Vout
-Vin
2,000
1,000
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