A300ERU
Series
Low Cost, 4:1 Input 3W
Single & Dual Output
DC/DC Converters
Electrical Specifications
Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice.
Key Features:
•
3W Output Power
•
4:1 Input Voltage Range
•
1,500 VDC Isolation
•
-40ºC to +85ºC Temp Range
•
Compact DIP Case
•
Single & Dual Outputs
•
1.0 MH MTBF
•
Industry Standard Pin-Out
•
Low, Low Cost!
Input
Parameter
Input Voltage Range (See Note 1)
Input Filter
Short Circuit Input Power
Conditions
24 VDC Input
48 VDC Input
Min.
9.0
18.0
Typ.
24.0
48.0
2,000
Conditions
See Note 2
Dual Output , Balanced Loads
Vin = Min to Max
Iout = 10% to 100%
See Note 3
120
±0.03
Continuous (Autorecovery)
Conditions
60 Seconds
500 VDC
Min.
1,500
1,000
100
300
Conditions
Ambient
Min.
-40
-55
Free Air Convection
RH, Non-condensing
95
%
Typ.
Max.
+85
+125
Typ.
Max.
Units
VDC
M
pF
kHz
Units
ºC
ºC
Min.
Typ.
±1.0
±3.0
±0.2
±0.5
75
±0.5
±1.0
150
Max.
±3.0
Max.
36.0
72.0
Units
VDC
Capacitors
mW
Units
%
%
%
%
mV P - P
%
%/ºC
Output
Parameter
Output Voltage Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Ripple & Noise (20 MHz)
Output Power Protection
Temperature Coefficient
Output Short Circuit
General
Parameter
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
Environmental
Parameter
Operating Temperature Range
Storage Temperature Range
Cooling
Humidity
Physical
Case Size (See Note 4)
Case Material (See Note 4)
1.25 x 0.80 x 0.37 Inches (31.8 x 20.3 x 9.5 mm)
Non-Conductive Black Plastic (UL94V-0)
0.52 Oz (15g)
Conditions
MIL HDBK 217F, 25ºC, Gnd Benign
Conditions
24 VDC Input
48 VDC Input
1.5 mm From Case For 10 Sec
All Models
Min.
1.0
Min.
-0.7
-0.7
Typ.
Max.
40.0
80.0
300
2,500
Typ.
Max.
Units
MHours
Units
VDC
ºC
mW
MicroPower Direct
292 Page Street
Suite D
Stoughton, MA 02072
USA
T:
(781) 344-8226
F:
(781) 344-8481
E:
sales@micropowerdirect.com
W:
www.micropowerdirect.com
Weight
Reliability Specifications
Parameter
MTBF
Absolute Maximum Ratings
Parameter
Input Voltage Surge (1 Sec)
Lead Temperature
Internal Power Dissipation
Caution:
Exceeding Absolute Maximum Ratings may damage the module. These are not continuous operating ratings.
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Model Selection Guide
Model
Number
A301ERU
A302ERU
A303ERU
A304ERU
A305ERU
A306ERU
A307ERU
A311ERU
A312ERU
A313ERU
A314ERU
A315ERU
A316ERU
A317ERU
Voltage (VDC)
Nominal
24
24
24
24
24
24
24
48
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
9.0 - 36.0
18.0 - 72.0
18.0 - 72.0
18.0 - 72.0
18.0 - 72.0
18.0 - 72.0
18.0 - 72.0
18.0 - 72.0
Input
Current (mA)
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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)
169
164
157
157
164
157
157
84
80
78
78
82
78
78
16
16
16
16
16
16
16
8
8
8
8
8
8
8
10
10
10
10
10
10
10
10
10
10
10
10
10
10
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
909
600
250
200
±300
±125
±100
909
600
250
200
±300
±125
±100
90.0
60.0
25.0
20.0
±30.0
±12.0
±10.0
90.0
60.0
25.0
20.0
±30.0
±12.0
±10.0
74
76
80
80
76
80
80
74
78
80
80
76
80
80
750
750
750
750
750
750
750
500
500
500
500
500
500
500
For models with a metal case, add an
“M” to the model number (ie: A315ERUM)
Notes:
1. Exceeding the input range by a significant margin may damage the units. For 24V input the input voltage
should not exceed 40V; for 48V models it should not exceed 80V.
2. Voltage accuracy for the negative output on Dual output models is typically
±3%
with a max of
±5%.
3. Maximum ouput noise for dual output units is 150 mV P-P. When measuring output ripple, it is recom-
mended that an external 0.33
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.
4. The optional metal package is nickel plated steel. The dimensions of the metal package are 1.25 x 0.80 x 0.39
Inches (31.8 x 20.3 x 10.0 mm).
5. These units should not be operated with a load under the specified minimum. Operation at no-load will
increase ripple significantly and may cause damage to the unit.
6. These converters are specified for operation without external components. However, in some applications
the addition of input/output capacitors will enhance stability and reduce output ripple. Recommended
capacitor values are:
Vin: 10
µF
- 47
µF
Vout: 10
µF/100
mA
For applications requiring very low output noise levels, a simple LC filter
should be effective.
7. The maximum load capacitance is:
Derating Curve
Mechanical Dimensions
Vout
3.3 VDC
5 VDC
12 VDC
15 VDC
Maximum
Load
Capacitance
2,200
µF
1,000
µF
470
µF
330
µF
Vout
±5 VDC
±12 VDC
±15 VDC
Maximum
Load
Capacitance
2,200
µF
1,000
µF
470
µF
8. It is recommended that a fuse be used on the input of a power supply for
protection. See the Model Selection table above for the correct rating.
Pin Connections
Pin
Single
Dual
2, 3
-Vin
-Vin
9
NC
Common
10
NC
NC
11
NC
-Vout
14
+Vout
+Vout
15
NC
NC
16
-Vout
Common
22, 23
+Vin
+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
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