VAT0 [CUI]
dc-dc converter; DC-DC变换器
| 型号： | VAT0 |
| 厂家： | 
CUI INC |
| 描述： | dc-dc converter |
| 文件： | 总3页 (文件大小：208K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
page
1 of 3
date 02/2008
PART NUMBER: VAT0.25-SMT Series
DESCRIPTION: dc-dc converter
description
features
Designed to convert fixed
voltages into isolated voltages,
the VAT0.25-SMT series is well
suited for providing board-mount
local supplies in a wide range of
applications, including mixed
analog/digital circuits, test &
measurement equip.,
·SMT package
·internal SMD construction
·I/O isolation: 1000 V dc
·no heatsink required
·no external component required
·industry standard pinout
·temperature range: -40°C~+85°C
process/machine controls, data-
com/telecom fields, etc...
MODEL
input voltage
output voltage
output current
efficiency
typ.
nominal
(V dc)
range.
(V dc)
max.
(mA)
min.
(mA)
(V dc)
±3.3
±5
(%)
VAT0.25-S5-D3.3-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
4.5~5.5
±38
±25
±14
±11
±9
±4
±3
±2
±2
±1
±3
±2
±2
±1
±3
±2
±2
±1
62
64
65
67
66
65
64
63
64
61
62
63
65
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. All specifications measured at TA=25°C, humidity <75%, nominal input voltage and rated output load unless otherwise specified.
2. Unbalanced load: ±5%
OUTPUT
parameter
conditions/description
min
nom
max
units
output power
voltage accuracy
output ripple
output noise
line regulation
0.25
W
see tolerance envelope graph
@ 20MHz Bandwidth
@ 20MHz Bandwidth
for Vin change of 1%(3.3V output)
for Vin change of 1%
10% to 100% full load
3.3V output
50
75
75
mVpp
mVpp
%
150
±1.5
±1.2
%
load regulation
15
10
20
15
%
%
5V output
9V output
6.5
6.0
6.0
15
%
12V output
15
%
15V output
15
%
temperature coefficient
switching frequency
100% full load
0.03
%/°C
KHz
KHz
100% load, nominal input(24V input)
100% load, nominal input(5V, 12V)
700
150
notes:
1. Test ripple and noise by “parallel cable” method.
*V-Infinity reserves the right to make changes to its products or to discontinue any product or service without notice, and to advise customers to verify the most up-to-
date product information before placing orders. V-Infinity assumes no liability or responsibility for customer’s applications using V-Infinity products other than repair
or replacing (at V-I’s option) V-Infinity products not meeting V-I’s published specifications. Nothing will be covered outside of standard product warranty.
th
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
page
2 of 3
date 02/2008
PART NUMBER: VAT0.25-SMT Series
DESCRIPTION: dc-dc converter
GENERAL SPECIFICATIONS
parameter
conditions/description
output short circuit protection
temperature rise at full load
cooling
1 second max.
15°C typ., 25°C max.
free air convection
-40°C ~ +85°C
operating temp. range
storage temp. range
reflow soldering temp.
storage humidity range
case material
-55°C ~ +125°C
260°C (1.5mm from case for 10 seconds)
≤95%
plastic (UL94-V0)
>3,500,000 hours
MTBF
ISOLATION SPECIFICATIONS
parameter
conditions/description
min
1000
1000
nom
max
units
V dc
MΩ
isolation voltage
isolation resistance
flash tested for 1 minute
test at 500 V dc
OUTLINE DIMENSIONS & RECOMMENDED LAYOUT PATTERN
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 Function
1
2
-Vin
+Vin
NC
Com
-Vout
NC
+Vout
NC
NC
NC
(0.6)
15.24
(0.4)
10.16
3
10
9
8
3
7
6
4
5
6
(Top View)
7
8
9
0.1
0.004)
2.54
(0.1
0.6 0.05
10
(0.02 0.002)
1
2
4
5
Note: All Pins on a 2.54mm(0.1) pitch; All Pin Widths are 0.60 mm(0.02);
Tolerances: 0.15mm(0.006); Unit: mm(inch)
TYPICAL CHARACTERISTICS
Tolerance Envelope Graph
Temperature Derating Graph
Safe Operating Area
120
100
+10%
+5%
Nominal
Voltage
+2.5%
-2.5%
-7.5%
80
60
40
20
0
-40
0
40
80
120
10%
50%
100%
Output Current (%)
Ambient Temperature(°C)
th
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
page
date 02/2008
3 of 3
PART NUMBER: VAT0.25-SMT Series
DESCRIPTION: dc-dc converter
Application Notes:
- Output Voltage Regulation and Over-voltage
Protection Circuit
- To ensure this module can operate efficiently and
reliably during operation, the minimum output load
should not be less than 10% of the full load. This
product should never be operated under no load
conditions. If the actual output power is very low you
should increase the load by connecting a resistor
with the proper resistance at the output end in
parallel.
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).
No parallel connection or plug and play.
- Overload Protection
Under normal operating conditions, the output circuit
of these products has no protection against overload.
The simplest method is to connect a self-recovery
fuse in series at the input end or add a circuit
breaker to the circuit.
Figure 2
+Vout
+Vin
-Vin
REG
Com
DC DC
-Vout
- Recommended Circuit
If you want to further decrease the input/output
ripple, an “LC” filtering network may be connected to
the input and output ends of the dc-dc converter, see
(Figure 1).
REG
REG
+Vout
Com
+Vin
-Vin
DC DC
-Vout
Figure 1
L
L
+Vout
+Vin
-Vin
C
C
C
Com
DC DC
Reflow Profile
L
-Vout
Peak Temperature
260°C for 10 Sec. Max
250
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. However, the capacitance of
the output filter capacitor must be proper. If the
capacitance is too large, a startup problem might
arise. It is not recommended to connect any
external capacitor in the application field .
220°C
200
150
100
90 Sec. max
(>220°C)
50
0
Time (Seconds)
th
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
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