VAT0.25-S12-D15-SMT-TR [CUI]
VAT0.25-S12-D15-SMT-TR;
| 型号： | VAT0.25-S12-D15-SMT-TR |
| 厂家： | 
CUI INC |
| 描述： | VAT0.25-S12-D15-SMT-TR |
| 文件： | 总5页 (文件大小：210K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
date 10/31/2012
page 1 of 5
SERIES: VAT0.25-SMT │ DESCRIPTION: DC-DC CONVERTER
FEATURES
• 0.25 W isolated output
• industry standard 10 pin SMT package
• dual unregulated outputs
• 1,000 V isolation
• short circuit protection
• UL safety approvals (some models)
• wide temperature (-40~85°C)
• efficiency up to 67%
RoHS
input
voltage
output
voltage
output
current
output
power
max
ripple1
noise1
efficiency
MODEL
typ
range
min
max
max
max
typ
(Vdc)
(Vdc)
(Vdc)
±3.3
±5
(mA)
±4
±3
±2
±2
±1
±3
±2
±2
±1
±3
±2
±2
±1
(mA)
(W)
(mVp-p)
(mVp-p)
(%)
VAT0.25-S5-D5-SMT
VAT0.25-S5-D5-SMT
VAT0.25-S5-D9-SMT
VAT0.25-S5-D12-SMT
VAT0.25-S5-D15-SMT
VAT0.25-S12-D5-SMT
VAT0.25-S12-D9-SMT
VAT0.25-S12-D12-SMT
VAT0.25-S12-D15-SMT
VAT0.25-S24-D5-SMT
VAT0.25-S24-D9-SMT
VAT0.25-S24-D12-SMT
VAT0.25-S24-D15-SMT
5
4.5~5.5
±38
±25
±14
±11
±9
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
75
75
75
75
75
75
75
75
75
75
75
75
75
150
150
150
150
150
150
150
150
150
150
150
150
150
62
64
65
67
66
65
64
63
64
61
62
63
65
5
4.5~5.5
5
4.5~5.5
±9
5
4.5~5.5
±12
±15
±5
5
4.5~5.5
12
12
12
12
24
24
24
24
10.8~13.2
10.8~13.2
10.8~13.2
10.8~13.2
21.6~26.4
21.6~26.4
21.6~26.4
21.6~26.4
±25
±14
±11
±9
±9
±12
±15
±5
±25
±14
±11
±9
±9
±12
±15
Notes:
1. ripple and noise are measured at 20 MHz BW
2. unbalanced load: ±5%
PART NUMBER KEY
VAT0.25 - SXX - DXX -SMT- X
Base Number
Input Voltage
Output Voltage
Package Options
"blank" = standard
TR = Tape & Reel
Packaging Style
cui.com
CUI Inc │ SERIES: VAT0.25-SMT │ DESCRIPTION: DC-DC CONVERTER
date 10/31/2012 │ page 2 of 5
INPUT
parameter
conditions/description
min
typ
max
units
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
operating input voltage
OUTPUT
parameter
line regulation
conditions/description
min
typ
max
units
for Vin change of 1%
1.2
%
measured from 10% load to full load
3.3 V model
5 V model
9 V model
12 V model
15
10
6.5
6.0
6.0
20
15
15
15
15
%
%
%
%
%
load regulation
15 V model
voltage accuracy
see derating curves
100% load, 5 and 12 V input
100% load, 24 V input
150
700
kHz
kHz
switching frequency
temperature coefficient
±0.03
typ
%/°C
Notes:
1. test ripple and noise by “parallel cable” method.
PROTECTIONS
parameter
conditions/description
min
max
units
short circuit protection
1
s
SAFETY AND COMPLIANCE
parameter
conditions/description
min
typ
max
units
Vdc
isolation voltage
isolation resistance
safety approvals
MTBF
for 1 minute at 1 mA max.
at 500 Vdc
1,000
1,000
MΩ
UL 60950-1 (E222736)
3,500,000
hours
RoHS compliant
yes
ENVIRONMENTAL
parameter
conditions/description
min
-40
-55
typ
max
85
units
°C
operating temperature
storage temperature
storage humidity
125
95
°C
non-condensing
%
temperature rise
at full load
15
25
°C
lead temperature
1.5 mm from case for 10 seconds
260
°C
cui.com
CUI Inc │ SERIES: VAT0.25-SMT │ DESCRIPTION: DC-DC CONVERTER
date 10/31/2012 │ page 3 of 5
DERATING CURVES
1. output power vs. ambient temperature
2. output voltage vs. output current
+10%
+5%
100
80
+2.5%
-2.5%
Nominal
Voltage
60
-7.5%
40
20
-40
-20
0
20
40
60
85
105 120
10%
50%
100%
Ambient Temperature (°C)
Output Current (%)
MECHANICAL
parameter
dimensions
conditions/description
min
typ
max
units
0.600 x 0.441 x 0.250 (15.24 x 11.22 x 6.50 mm)
plastic (UL94-V0)
inch
case material
weight
1.70
g
MECHANICAL DRAWING
units: mm (inches)
tolerance: ±0.15 (±0.006)
pin section tolerance: ±0.10 mm (±0.004)
6.76
0.50
[0.27]
[0.02]
A
1.35MAX
(Side View)
"
[0.06]
5.00
0.25
0.3
7.15
[10..0875]MAX
[0.01]
[0.01]
[0.28]
PIN CONNECTIONS
[0.6]
15.24
PIN
FUNCTION
[0.4]
10.16
1
2
GND
+Vin
0 V
-Vo
NC
10 9 8 7 6
4
5
6
(Top View)
7
+Vo
NC
8
0.1
0.004]
2.54
[0.1
9
NC
0.6 0.05
[0.02 0.002]
10
NC
1 2 3 4 5
cui.com
CUI Inc │ SERIES: VAT0.25-SMT │ DESCRIPTION: DC-DC CONVERTER
date 10/31/2012 │ 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).
L
L
+Vout
+Vin
C
Figure 1
C
Com
DC DC
C
L
-Vin
-Vout
4. 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).
+Vout
+Vin
REG
Com
DC DC
Figure 2
-Vin
-Vout
Peak Temperature
260°C for 10 Sec. Max
250
220°C
200
150
100
90 Sec. max
(>220°C)
50
0
Time (Seconds)
cui.com
CUI Inc │ SERIES: VAT0.25-SMT │ DESCRIPTION: DC-DC CONVERTER
date 10/31/2012 │ page 5 of 5
REVISION HISTORY
rev.
description
date
1.0
initial release
02/19/2008
09/06/2012
10/31/2012
1.01
1.02
new template applied, V-Infinity branding removed
added TR package option
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
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
affect its safety or effectiveness.
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