Datasheet

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date
05/25/2014
page
1 of 5
SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER
1 W isolated output
industry standard 8 pin SMT package
single unregulated outputs
1,000 V isolation
short circuit protection
UL safety approvals (some models)
wide temperature (-40~85°C)
efficiency up to 79%
U
•
•
•
•
•
•
•
•
ED
FEATURES
RoHS
input
voltage
output
voltage
typ
(Vdc)
range
(Vdc)
(Vdc)
VBT1-S3.3-S3.3-SMT
3.3
3.0~3.63
3.3
VBT1-S3.3-S5-SMT
3.3
3.0~3.63
5
VBT1-S5-S3.3-SMT
5
4.5~5.5
VBT1-S5-S5-SMT
5
4.5~5.5
VBT1-S5-S9-SMT
5
VBT1-S5-S12-SMT
5
VBT1-S5-S15-SMT
VBT1-S5-S24-SMT
output
current
output
power
ripple
and noise1
efficiency
max
(W)
max
(mVp-p)
typ
(%)
N
MODEL
min
(mA)
max
(mA)
303
1
75
73
200
1
75
74
3.3
30
303
1
75
72
5
20
200
1
75
77
4.5~5.5
9
12
111
1
75
76
4.5~5.5
12
9
84
1
75
79
5
4.5~5.5
15
7
67
1
75
78
5
4.5~5.5
24
4
42
1
75
78
VBT1-S12-S3.3-SMT
12
10.8~13.2
3.3
30
303
1
75
75
VBT1-S12-S5-SMT
12
10.8~13.2
5
20
200
1
75
69
VBT1-S12-S9-SMT
12
10.8~13.2
9
12
111
1
75
73
12
10.8~13.2
12
9
84
1
75
73
12
10.8~13.2
15
7
67
1
75
74
12
10.8~13.2
24
4
42
1
75
79
15
13.5~16.5
5
20
200
1
75
74
VBT1-S15-S15-SMT
15
13.5~16.5
15
7
67
1
75
79
VBT1-S24-S3.3-SMT
24
21.6~26.4
3.3
30
300
1
75
69
VBT1-S12-S15-SMT
VBT1-S12-S24-SMT
N
IS
C
VBT1-S15-S5-SMT
O
VBT1-S12-S12-SMT
TI
30
20
VBT1-S24-S5-SMT
24
21.6~26.4
5
20
200
1
75
70
VBT1-S24-S9-SMT
24
21.6~26.4
9
11
110
1
75
72
VBT1-S24-S12-SMT
24
21.6~26.4
12
8
83
1
75
75
VBT1-S24-S15-SMT
24
21.6~26.4
15
7
67
1
75
76
VBT1-S24-S24-SMT
24
21.6~26.4
24
4
42
1
75
77
1. ripple and noise are measured at 20 MHz BW
D
Notes:
PART NUMBER KEY
VBT1 - SXX - SXX -SMT - X
Base Number
Input Voltage
Output Voltage
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Packaging Style
Package Options
"blank" = standard
TR = Tape & Reel
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CUI Inc │ SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER
date 05/25/2014 │ page 2 of 5
INPUT
conditions/description
min
typ
max
units
operating input voltage
3.3 V model
5 V model
12 V model
15 V model
24 V model
3.0
4.5
10.8
13.5
21.6
3.3
5
12
15
24
3.63
5.5
13.2
16.5
26.4
Vdc
Vdc
Vdc
Vdc
Vdc
parameter
conditions/description
min
typ
max
units
line regulation
for Vin change of 1%, 3.3 V model
for Vin change of 1%, all other models
1.5
1.2
%
%
load regulation
measured from 10% load to full load
3.3 V model
5 V model
9 V model
12 V model
15 V model
24 V model
20
15
10
10
10
10
%
%
%
%
%
%
voltage accuracy
see derating curves
switching frequency
100% load, 5 and 12 V input
100% load, 24 V input
100% load, all other models
500
kHz
kHz
kHz
PROTECTIONS
parameter
N
TI
temperature coefficient
conditions/description
short circuit protection
min
N
SAFETY AND COMPLIANCE
15
12.8
8.3
6.8
6.3
6.0
U
OUTPUT
ED
parameter
±0.03
typ
max
units
1
s
max
units
isolation voltage
for 1 minute at 1 mA max.
1,000
Vdc
isolation resistance
at 500 Vdc
1,000
MΩ
3,500,000
hours
MTBF
RoHS compliant
UL 60950-1 (E222736)
yes
1. VBT1-S3.3-S9/12/15/24, VBT1-S5-S3.3 and 24, VBT1-S12-S3.3 and S24, VBT1-S15 (all), and VBT1-S24 (all) models UL 60950-1 pending
IS
C
Notes:
O
conditions/description
safety approvals
typ
%/°C
parameter
1
min
100
500
100
ENVIRONMENTAL
parameter
conditions/description
min
operating temperature
storage temperature
storage humidity
max
units
-40
typ
85
°C
-55
125
°C
95
%
non-condensing
at full load
see reflow soldering profile
25
°C
245
D
temperature rise
reflow soldering
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°C
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CUI Inc │ SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER
date 05/25/2014 │ page 3 of 5
SOLDERING
25 0
24 5
Peak .Temp 245˚C( Max.)
21 7
60 Sec Max
( >217˚
C)
ED
Tem peratur e (˚C )
20 0
15 0
10 0
50
0
U
Tim e (se c.)
DERATING CURVES
1. output power vs. ambient temperature
2. output voltage vs. output current
+10%
Output Voltate (%)
80
60
40
20
-20
0
20
40
60
85
105 120
Ambient Temperature (°C)
MECHANICAL
10%
conditions/description
12.70 x 11.20 x 6.25 (0.500 x 0.441 x 0.246 inch)
case material
plastic (UL94-V0)
MECHANICAL DRAWING
-7.5%
50%
min
typ
1.41
O
(Side View)
IS
C
D
6.00 [0.236]
0.60 [0.024]
0.25 [0.010]
12.70 [0.500]
8
7.50 [0.295]
7
6
2
3
11.20 [0.441]
4
1.35 [0.053]
5
2.54 [0.100]
1
2
3
4
2.10 [0.083]
1.00 [0.039]
2.54 [0.100]
PIN
8.50 [0.335]
A
6
PIN CONNECTIONS
A
0.25 [0.010]
7
5
(Top View)
1
8
10.10 [0.398]
2.54 [0.100]
0.25 [0.010]
5° max
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100%
max
units
mm
units: mm [inches]
tolerance: ±0.15 [±0.006]
pin section tolerance: ±0.10 mm [±0.004]
6.25 [0.246]
-2.5%
Output Current (%)
N
parameter
dimensions
weight
+2.5%
Voltage
TI
-40
+5%
Nominal
N
Load (%)
100
FUNCTION
1
GND
2
+Vin
4
0V
5
+Vo
3,6,7
NC
8
NC
g
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CUI Inc │ SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER
date 05/25/2014 │ page 4 of 5
APPLICATION NOTES
ED
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.
+Vo
Vin
DC DC
Cin
Cout
0V
TI
GND
N
Figure 1
U
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).
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).
REG
N
Vin
GND
O
Figure 2
REG
+Vo
DC DC
0V
5. External Capacitor Table
It is not recommended to connect any external capacitor in the application field with less than 0.5 W output.
Cin
(µF)
Vout
(Vdc)
Cout
(µF)
3.3/5
4.7
3.3/5
10
12
2.2
9
4.7
15
2.2
12
2.2
24
0.47
15
1
--
--
24
0.47
D
IS
C
Table 1
Vin
(Vdc)
Note:
1. All specifications are measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
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CUI Inc │ SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER
date 05/25/2014 │ page 5 of 5
REVISION HISTORY
description
date
01/14/2011
1.0
initial release
1.01
new template applied
1.02
V-Infinity branding removed
1.03
added TR package option
1.04
discontinued alternate pin configuration, "X", option
1.05
reflow solder profile changed
ED
rev.
04/11/2012
09/05/2012
11/01/2012
07/09/2013
05/25/2014
D
IS
C
O
N
TI
N
U
The revision history provided is for informational purposes only and is believed to be accurate.
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Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
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[email protected]
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