rev.
page 1 of 3
date 10/2009
PART NUMBER: VEFT1-SMT
DESCRIPTION: single output series dc-dc converter
Description
Features
Designed to convert fixed voltages into
an isolated voltage, the VEFT1-SMT sin-
gle series is well suited for providing
board-mount local supplies in a wide
range of applications, including mixed
analog/digital circuits, test & measure-
ment equip., process/machine controls,
datacom/telecom fields, etc...
·Isolated 1 W output
·Temperature range: -40°C~+85°C
·Unregulated
·High efficiency to 80%
·Single voltage output
·Small footprint
·SMD package style
·Industry standard pinout
·UL94-V0 package
·No heatsink required
·3K Vdc isolation
The semi-regulated output can be fol-
lowed by 3-terminal regulators to pro-
vide output protection, in addition to
output regulation.
·Power density 0.85 W/cm³
·No external component required
·Low cost
MODEL
Input Voltage
Output
Voltage
3.3 Vdc
5 Vdc
3.3 Vdc
5 Vdc
Output Current
Package
Nominal
3.3 Vdc
3.3 Vdc
5 Vdc
Range
Max.
300 mA
200 mA
300 mA
200 mA
111 mA
83 mA
Min.
30 mA
20 mA
30 mA
20 mA
12 mA
9 mA
Efficiency Style UL60950-1
VEFT1-S3.3-S3.3-SMT
VEFT1-S3.3-S5-SMT
VEFT1-S5-S3.3-SMT
VEFT1-S5-S5-SMT
VEFT1-S5-S9-SMT
VEFT1-S5-S12-SMT
VEFT1-S5-S15-SMT
VEFT1-S5-S24-SMT
VEFT1-S12-S3.3-SMT
VEFT1-S12-S5-SMT
VEFT1-S12-S9-SMT
VEFT1-S12-S12-SMT
VEFT1-S12-S15-SMT
VEFT1-S12-S24-SMT
VEFT1-S24-S3.3-SMT
VEFT1-S24-S5-SMT
VEFT1-S24-S9-SMT
VEFT1-S24-S12-SMT
VEFT1-S24-S15-SMT
VEFT1-S24-S24-SMT
3.00~3.60 Vdc
3.00~3.60 Vdc
4.5~5.5 Vdc
72%
73%
74%
70%
75%
78%
80%
78%
75%
72%
76%
79%
81%
79%
73%
79%
80%
81%
79%
80%
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
SMD
NO
NO
NO
YES
YES
YES
YES
NO
5 Vdc
4.5~5.5 Vdc
5 Vdc
4.5~5.5 Vdc
9 Vdc
5 Vdc
4.5~5.5 Vdc
12 Vdc
15 Vdc
24 Vdc
3.3 Vdc
5 Vdc
5 Vdc
4.5~5.5 Vdc
67 mA
7 mA
5 Vdc
4.5~5.5 Vdc
42 mA
5 mA
12 Vdc
12 Vdc
12 Vdc
12 Vdc
12 Vdc
12 Vdc
24 Vdc
24 Vdc
24 Vdc
24 Vdc
24 Vdc
24Vdc
10.8~13.2 Vdc
10.8~13.2 Vdc
10.8~13.2 Vdc
10.8~13.2 Vdc
10.8~13.2 Vdc
10.8~13.2 Vdc
21.6~26.4 Vdc
21.6~26.4 Vdc
21.6~26.4 Vdc
21.6~26.4 Vdc
21.6~26.4 Vdc
21.6~26.4 Vdc
300 mA
200 mA
111 mA
83 mA
30 mA
20 mA
12 mA
9 mA
NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
9 Vdc
12 Vdc
15 Vdc
24 Vdc
3.3 Vdc
5 Vdc
67 mA
7 mA
42 mA
5 mA
300 mA
200 mA
111 mA
83 mA
30 mA
20 mA
12 mA
9 mA
9 Vdc
12 Vdc
15 Vdc
24 Vdc
67 mA
7 mA
NO
NO
42 mA
5 mA
OUTPUT SPECIFICATIONS
Item
Test conditions
Min.
0.1
Typ.
Max.
1
Units
W
Output power
Line Regulation
Load Regulation
Output voltage accuracy
Temperature drift
Output ripple
For Vin change of 1%
1.2
15
%
%
10% to 100% full load
See tolerance envelope graph
@ 100% load
20 MHz Bandwidth
Full load, nominal input
10
0.03
150
160
%/°C
mVp-p
KHz
75
125
Switching frequency
100
th
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.v-infinity.com