Datasheet

For more information, please visit the product page.
date
09/07/2012
page
1 of 5
SERIES: VASD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
FEATURES
d
0.25 W isolated output
industry standard 6 pin SIP package
dual unregulated outputs
1,000 V isolation
short circuit protection
UL safety approvals
wide temperature (-40~85°C)
efficiency up to 66%
RoHS
VASD0.25-S5-D9-SIP
output
voltage
output
current
output
power
ripple
and noise1
efficiency
(Vdc)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
±9
±13.8
0.25
75
64
±15
±8.3
0.25
75
65
±9
±13.8
0.25
75
63
10.8~13.2
±12
±10.4
0.25
75
64
21.6~26.4
±5
±25
0.25
75
63
typ
(Vdc)
range
(Vdc)
5
4.5~5.5
5
4.5~5.5
VASD0.25-S12-D9-SIP
12
10.8~13.2
VASD0.25-S12-D12-SIP
12
VASD0.25-S24-D5-SIP
24
1. ripple and noise are measured at 20 MHz BW
2. unbalanced load: ±5%
is
co
Notes:
nt
VASD0.25-S5-D15-SIP
in
input
voltage
MODEL
ue
•
•
•
•
•
•
•
•
D
PART NUMBER KEY
VASD0.25 - SXX - DXX -SIP
Base Number
Input Voltage
cui.com
Output Voltage
Packaging Style
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CUI Inc │ SERIES: VASD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
date 09/07/2012 │ page 2 of 5
INPUT
parameter
conditions/description
min
typ
max
units
operating input voltage
5 V model
12 V model
24 V model
4.5
10.8
21.6
5
12
24
5.5
13.2
26.4
Vdc
Vdc
Vdc
conditions/description
min
typ
max
units
1.2
%
15
15
15
15
%
%
%
%
line regulation
for Vin change of 1%
load regulation
measured from 10% load to full load
5 V model
9 V model
12 V model
15 V model
voltage accuracy
see derating curves
switching frequency
100% load, input voltage range
temperature coefficient
Notes:
1. test ripple and noise by “parallel cable” method.
parameter
in
PROTECTIONS
10.5
8.3
6.8
6.3
ue
parameter
d
OUTPUT
conditions/description
short circuit protection
SAFETY AND COMPLIANCE
min
kHz
±0.03
%/°C
typ
units
1
s
max
units
for 1 minute at 1 mA max.
1,000
Vdc
isolation resistance
at 500 Vdc
1,000
MΩ
safety approvals
UL 60950-1 (E222736)
3,500,000
hours
co
yes
nt
conditions/description
isolation voltage
RoHS compliant
typ
max
parameter
MTBF
min
100
ENVIRONMENTAL
parameter
conditions/description
min
operating temperature
storage temperature
typ
units
85
°C
-55
125
°C
95
%
25
°C
300
°C
non-condensing
is
storage humidity
max
-40
at full load
lead temperature
1.5 mm from case for 10 seconds
15
D
temperature rise
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CUI Inc │ SERIES: VASD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
date 09/07/2012 │ page 3 of 5
DERATING CURVES
1. output power vs. ambient temperature
2. output voltage vs. output current
+10%
80
60
40
-40
-20
0
20
40
60
85
100
conditions/description
dimensions
0.772 x 0.236 x 0.374 (19.60 x 6.00 x 9.50 mm)
case material
plastic (UL94-V0)
weight
typ
max
2.1
g
6.00
[0.236]
1 2
4 5 6
D
]
[0.160
is
2.54
[1.00]
19.60[0.772]
PIN CONNECTIONS
0.50
[0.020]
PIN
cui.com
units
inch
co
1.25
[0.049]
100%
nt
MECHANICAL DRAWING
min
in
parameter
9.50
[0.374]
50%
-7.5%
Output Current (%)
MECHANICAL
2.10±0.50
[0.083±0.020]
-2.5%
10%
Ambient Temperature (°C)
units: mm [inches]
tolerance: ±0.25 [±0.010]
pin section tolerance: ±0.10 [±0.004]
+2.5%
Voltage
ue
20
+5%
Nominal
d
Output Voltate (%)
Load (%)
100
FUNCTION
1
Vin
2
GND
4
-Vo
5
0V
6
+Vo
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CUI Inc │ SERIES: VASD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
date 09/07/2012 │ page 4 of 5
APPLICATION NOTES
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).
ue
d
1.
is
co
Figure 2
nt
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).
D
4.
in
Figure 1
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CUI Inc │ SERIES: VASD0.25-SIP │ DESCRIPTION: DC-DC CONVERTER
date 09/07/2012 │ page 5 of 5
REVISION HISTORY
description
date
1.0
initial release
02/19/2008
1.01
new template applied; V-Infinity branding removed; VASD0.25-S5D5-SIP, VASD0.25-S5-D12-SIP, VASD0.25-S12-D5-SIP, VASD0.25S12-D15-SIP, VASD0.25-S24-D9-SIP, VASD0.25-S24-D12-SIP and
VASD0.25-S24-D15-SIP discontinued
08/06/2012
1.02
template updated
1.03
discontinued
d
rev.
09/04/2012
09/25/2012
D
is
co
nt
in
ue
The revision history provided is for informational purposes only and is believed to be accurate.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
[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.