Datasheet

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date
09/06/2012
page
1 of 5
SERIES: VBSD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
FEATURES
•
•
•
•
•
•
0.25 W isolated output
industry standard 4 pin SIP package
single unregulated outputs
-40~85°C temperature range
1,000 Vdc isolation
no heatsink required
RoHS
input
voltage
MODEL
output
voltage
output
current
output
power
ripple
and noise
efficiency
typ
(Vdc)
range
(Vdc)
(Vdc)
min
(mA)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
VBSD0.25-S3.3-S3.3-SIP
3.3
3.0 ~ 3.6
3.3
5
76
0.25
100
64
VBSD0.25-S3.3-S5-SIP
3.3
2.97 ~ 3.63
5
5
50
0.25
100
64
VBSD0.25-S5-S3.3-SIP
5
4.5 ~ 5.5
3.3
8
76
0.25
100
64
VBSD0.25-S5-S5-SIP
5
4.5 ~ 5.5
5
5
50
0.25
100
64
VBSD0.25-S5-S9-SIP
5
4.5 ~ 5.5
9
3
28
0.25
100
65
VBSD0.25-S5-S12-SIP
5
4.5 ~ 5.5
12
2
21
0.25
100
67
VBSD0.25-S5-S15-SIP
5
4.5 ~ 5.5
15
2
17
0.25
100
65
VBSD0.25-S12-S3.3-SIP
12
10.8 ~ 13.2
3.3
8
76
0.25
100
64
VBSD0.25-S12-S5-SIP
12
10.8 ~ 13.2
5
5
50
0.25
100
65
VBSD0.25-S12-S9-SIP
12
10.8 ~ 13.2
9
3
28
0.25
100
66
VBSD0.25-S12-S12-SIP
12
10.8 ~ 13.2
12
2
21
0.25
100
67
VBSD0.25-S12-S15-SIP
12
10.8 ~ 13.2
15
2
17
0.25
100
66
VBSD0.25-S24-S5-SIP
24
21.6 ~ 26.4
5
5
50
0.25
100
63
VBSD0.25-S24-S12-SIP
24
21.6 ~ 26.4
12
2
21
0.25
100
65
VBSD0.25-S24-S15-SIP
24
21.6 ~ 26.4
15
2
17
0.25
100
66
Notes:
1. All specifications measured at TA=25°C, humidity <75%, nominal input voltage and rated output load unless otherwise specified.
PART NUMBER KEY
VBSD0.25-S XX - S XX -SIP
Base Number
Output Voltage
Input Voltage
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CUI Inc │ SERIES: VBSD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
date 09/06/2012 │ page 2 of 5
INPUT
parameter
conditions/description
min
typ
max
units
operating input voltage
3.3 V model
5 V model
12 V model
24 V model
2.97
4.5
10.8
21.6
3.3
5
12
24
3.63
5.5
13.2
26.4
Vdc
Vdc
Vdc
Vdc
min
typ
OUTPUT
parameter
line regulation
conditions/description
for Vin change of 1%
max
units
±1.5
±1.2
%
%
15
12.8
8.3
6.8
6.3
20
15
15
15
15
%
%
%
%
%
50
100
mVp-p
3.3 V model
all other models
3.3 V model
5 V model
9 V model
12 V model
15 V model
load regulation
measured from 10% to
full load
voltage accuracy
see tolerance envelope graph
output ripple
20 MHz bandwidth
switching frequency
100% load, input voltage range
110
temperature coefficient
kHz
±0.03
%/°C
max
units
1
s
max
units
PROTECTIONS
parameter
conditions/description
min
typ
short circuit protection
over temperature and
over voltage protection
linear voltage regulator with overheat protection is
connected to the input or output end in series for
OTP and OVP
SAFETY AND COMPLIANCE
parameter
conditions/description
isolation voltage
tested for 1 minute
1,000
min
Vdc
insulation resistance
at 500 Vdc
1,000
MΩ
RoHS compliant
yes
3,500,000
hours
MTBF
typ
ENVIRONMENTAL
parameter
conditions/description
min
typ
max
units
case operating temperature
-40
85
°C
storage temperature
-55
125
°C
storage humidity
non-condensing
temperature rise
100% load
lead temperature
1.5 mm from the case for 10 seconds
15
cui.com
95
%
25
°C
300
°C
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CUI Inc │ SERIES: VBSD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
date 09/06/2012 │ page 3 of 5
DERATING CURVES
Load (%)
100
80
60
40
20
-40
-20
0
20
40
60
85
100 105
Ambient Temperature (°C)
MECHANICAL
parameter
conditions/description
dimensions
0.461 x 0.374 x 0.2.36 (11.70 x 9.50 x 6.00 mm)
min
case material
plastic UL94-V0
typ
max
inch
weight
2.1
g
MECHANICAL DRAWING
Units: mm
All pins on a 2.54mm pitch
All pin diameters are 1.0mm
Side view
1 2 3
4
RoHS
PIN CONNECTIONS
1
1 2 3 4
Bottom view
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units
GND
2
Vin
3
0V
4
+Vout
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CUI Inc │ SERIES: VBSD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
date 09/06/2012 │ 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.
2.
Overload Protection
Under normal operating conditions, the output circuit of these products has no protection against over-current and short-circuits. The
simplest method is to connect a self-recovery fuse in series at the input end or add a circuit breaker to the circuit.
3.
Filtering
In some circuits which are sensitive to noise and ripple, a filtering capacitor may be added to the DC/DC output end and input end to
reduce the noise and ripple. However, the capacitance of the output filter 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 filter capacitor sees the external capacitor table. To get an extremely low ripple, an “LC” filtering network may be
connected to the input and output ends of the DC/DC converter, which may produce a more significant filtering effect. It should also
be noted that the inductance and the frequency of the “LC” filtering network should be staggered with the DC/DC frequency to avoid
mutual interference (Figure 1).
Figure 1
L
L
+Vin
Cout
DC DC
Cin
+Vout
-Vin
4.
-Vout
Output Voltage Regulation and Over-voltage Protection Circuit
The simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with overheat
protection that is connected to the input or output end in series (Figure 2).
+Vin
Figure 2
-Vin
+Vout
REG
DC DC
-Vout
REG
+Vin
-Vin
+Vout
DC DC
-Vout
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CUI Inc │ SERIES: VBSD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
date 09/06/2012 │ page 5 of 5
REVISION HISTORY
rev.
description
date
1.0
initial release
06/01/2008
1.01
new template applied
03/05/2012
1.02
V-Infinity branding removed, VBSD0.25-S24-S9-SIP discontinued
08/06/2012
picture updated
09/06/2012
1.03
The revision history provided is for informational purposes only and is believed to be accurate.
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20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
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[email protected]
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
affect its safety or effectiveness.
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