• industry standard 10 pin DIP package • efficiency up to 80%
• no heatsink required
• unregulated outputs
• 1,500 V isolation
MODEL
VRA3-D5-D5-DIP
VRA3-D5-D9-DIP
VRA3-D5-D12-DIP
VRA3-D5-D15-DIP
VRA3-D12-D5-DIP
VRA3-D12-D9-DIP
VRA3-D12-D12-DIP
VRA3-D12-D15-DIP
VRA3-D24-D5-DIP
VRA3-D24-D9-DIP
VRA3-D24-D12-DIP
VRA3-D24-D15-DIP
VRA3-D48-D5-DIP
VRA3-D48-D9-DIP
VRA3-D48-D12-DIP
VRA3-D48-D15-DIP
VRB3-D5-S5-DIP
VRB3-D5-S9-DIP
5
5
5
5
12
12
12
12
24
24
24
input
voltage
typ
(Vdc)
range
(Vdc)
output
voltage
(Vdc)
N
U
output
current
output
power
max
(W)
min
(mA)
max
(mA)
RoHS
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
±5
±9
±12
±15
±5
±9
±30
±16
±200
±167
±12
±10
±125
±100
TI
±30
±16
±200
±167
±12
±5
±12
±125
±15
±9
±10
±100
±30
±200
±16
±12
±10
±30
±16
±12
±10
60
33
25
20
60
33
25
20
60
33
25
20
60
33
25
20
±167
±125
±100
±200
±167
±125
±100
600
333
250
200
600
333
250
200
600
333
250
200
600
333
250
200
±12
±5
±15
±9
±12
5
±15
9
12
15
5
9
12
15
5
9
12
15
5
9
12
15
cui.com
18.0~36.0
18.0~36.0
18.0~36.0
O
N
24
18.0~36.0
48
36.0~72.0
48
36.0~72.0
48
5
36.0~72.0
4.5~9.0
48
5
36.0~72.0
4.5~9.0
4.5~9.0
4.5~9.0
5
5
12
9.0~18.0
12
9.0~18.0
12
9.0~18.0
12
9.0~18.0
24
18.0~36.0
24
18.0~36.0
24
24
48
48
48
48
18.0~36.0
18.0~36.0
36.0~72.0
36.0~72.0
36.0~72.0
36.0~72.0
IS
C
VRB3-D5-S12-DIP
VRB3-D5-S15-DIP
VRB3-D12-S5-DIP
VRB3-D12-S9-DIP
VRB3-D12-S12-DIP
VRB3-D12-S15-DIP
VRB3-D24-S5-DIP
D
VRB3-D24-S9-DIP
VRB3-D24-S12-DIP
VRB3-D24-S15-DIP
VRB3-D48-S5-DIP
VRB3-D48-S9-DIP
VRB3-D48-S12-DIP
VRB3-D48-S15-DIP
Notes:
1. ripple and noise are measured at 20 MHz BW
ED
ripple
and noise
1
typ
(mVp-p)
efficiency
typ
(%)
3
3
50
50
50
50
50
50
50
68
70
72
73
74
76
78
79
77
78
79
80
77
78
79
80
68
70
72
73
74
76
78
77
77
78
79
80
77
78
79
80
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VRX3-DIP
│
DESCRIPTION:
DC-DC CONVERTER
date
09/11/2012
│
page
2 of 5
PART NUMBER KEY
VR
X
3 - DXX -
X XX
-DIP
Base Number:
A = dual output voltage
Ex: VRA3-D5-D5-DIP
B = single output voltage
Ex: VRB3-D5-S5-DIP
Output:
Packaging Style
S = single
D = dual
Output Voltage
Input Voltage
INPUT
parameter
operating input voltage
conditions/description
5 V model
12 V model
24 V model
48 V model
N
U
min
typ
5
12
24
48
4.5
9.0
18.0
36.0
min
typ
±0.2
±0.5
±0.5
±1
±3
50
300
±0.03
VRA3 models
VRB3 models
min
typ
min
1,500
1,000
85
1,000,000
typ
min
-40
-55
typ
15
cui.com
OUTPUT
parameter
line regulation
load regulation
voltage accuracy
ripple and noise
switching frequency
temperature coefficient
conditions/description
measured from 10%
load to full load
positive
negative
input voltage from low to high
TI
O
N
20 MHz bandwidth
100% load, input voltage range
conditions/description
continuous
conditions/description
for 1 minute at 1 mA max.
at 500 Vdc
input to output at 100 kHz / 1 V
yes
conditions/description
non-condensing
at full load
1.5 mm from case for 10 seconds
PROTECTIONS
parameter
short circuit protection
IS
C
SAFETY AND COMPLIANCE
parameter
isolation voltage
isolation resistance
isolation capacitance
RoHS compliant
MTBF
ENVIRONMENTAL
parameter
operating temperature
storage temperature
storage humidity
D
temperature rise
lead temperature
ED
max
9.0
18.0
36.0
72.0
units
Vdc
Vdc
Vdc
Vdc
max
±0.5
±1.0
±0.75
±3
±5
100
units
%
%
%
%
%
mVp-p
kHz
%/°C
max
units
max
units
Vdc
MΩ
pF
hours
max
85
125
95
300
units
°C
°C
%
°C
°C
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VRX3-DIP
│
DESCRIPTION:
DC-DC CONVERTER
date
09/11/2012
│
page
3 of 5
DERATING CURVES
1. output power vs. ambient temperature
100
Load (%)
80
60
40
20
Ambient Temperature (°C)
MECHANICAL
parameter
dimensions
case material
weight
conditions/description
stainless steel
N
U
min
typ
14
23 22
16 15 14
-40
-20
0
20
40
60 71
85
100
120
1.252 x 0.787 x 0.394 (31.80 x 20.00 x 10.00 mm)
MECHANICAL DRAWING
units: mm [inches]
tolerance: ±0.25 [±0.010]
pin section tolerance: ±0.10 mm [±0.004]
31.80 [1.252]
O
N
2
3
9 10 11
TI
15.24 [0.600]
2.54 [0.100]
16 15 14
2
3
20.00 [0.787]
15.24 [0.600]
(Bottom View)
23 22
IS
C
2.54 [0.100]
22.86 [0.900]
2.54 [0.100]
22.86 [0.900]
PIN CONNECTIONS
SERIES
PIN
2,3
9
10.00
[0.394]
VRA3
FUNCTION
GND
NC
NC
NC
+Vo
0V
+Vin
4.10 [0.161]
D
(Side View)
10,15
11
14
0.50 [0.020]
16
22,23
cui.com
ED
max
units
inch
g
∅
1.00 [0.039]
9 10 11
4.47 [0.176]
VRB3
FUNCTION
GND
0V
NC
-Vo
+Vo
0V
+Vin
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VRX3-DIP
│
DESCRIPTION:
DC-DC CONVERTER
date
09/11/2012
│
page
4 of 5
APPLICATION NOTES
1.
Requirement on Output Load
In order to ensure the product operates efficiently and reliably, make sure the specified range of input voltage is not exceeded and
the minimum output load is not less than 10% load. If the actual load is less than the specified minimum load, the output ripple may
increase sharply while its efficiency and reliability will reduce greatly. If the actual output power is very small, please add an
appropriate resistor as extra loading.
Recommended Circuit
All VRX3 converters have been tested according to the following recommended testing circuit before leaving the factory. This series
should be tested under load, never under no load (Figure 1).
VRA3
VRB3
+Vo
Cout
Cin
2.
Figure 1
Vin
Vin
Cin
Cout
G ND
- Vo
However, the capacitance of the output
fi
lter capacitor must be proper. If the capacitance is too big, a startup problem might arise.
For every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its
fi
lter capacitor see
(Table 1).
General:
Cin
Cout
5, 12 V
24, 48 V
100
μF
10 ~ 22
μF
N
U
G ND
0V
DC
DC
0V
DC
DC
VRA3 Vout
(Vdc)
±5
±9
TI
±12
±15
10
μF
/ 100 mA
Table 1
3.
General: Ip
≤1.4*Iin-max
D
IS
C
4.
No parallel connection or plug and play
O
N
Input Current(A)
Input Current
While using unstable power source, please ensure the output voltage and ripple voltage do not excced indexes of the converter. The
preceding power source must be able to provide for converter sufficient starting current Ip.
Ip
Inp ut Voltage
Ra nge
Input Voltage (V)
cui.com
ED
+Vo
Cout
Cout
(μF)
680
470
330
220
VRB3 Vout
(Vdc)
5
9
12
15
Cout
(μF)
1,000
680
470
330
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VRX3-DIP
│
DESCRIPTION:
DC-DC CONVERTER
date
09/11/2012
│
page
5 of 5
REVISION HISTORY
rev.
1.0
1.01
description
initial release
V-Infinity branding removed
date
The revision history provided is for informational purposes only and is believed to be accurate.
D
IS
C
O
N
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical
component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to
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