Datasheet

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UEI Series
50-60W Isolated Wide-Range DC/DC Converters
MDC_UEI Series 50-60W.C10 Page 3 of 14
INPUT CHARACTERISTICS
Model Family
V
IN
Start-up
threshold
Under-
voltage
Shut-
down
Refl ected
(back)
Ripple
Current
2
Input Current
Recom-
mended
Fuse
Internal
Input
Filter
Type
Reverse
Polarity
Protection
Remote On/Off Control
Inrush
Tran-
sient
Output
Short
Circuit
Low
Line
Standby
Mode
On/Off
Current
Positive Logic Negative Logic
V
V V mA pk-pk A
2
sec mA A mA A mA “P” model suffi x “N” model suffi x
UEI-3.3/15-Q12
24
9.5 8.5
30
0.05 50
6.25
1
12
L-C
None
- see
notes
1
OFF=Gnd pin or
–0.7 to +1.2V
max. ON=open
pin or +10 to
+15V max.
OFF=open pin
or +10 to +15V
max. ON=Gnd
pin or –0.7 to
+1.2V max.
UEI-3.3/18-Q48 48 17.3 16.0 3.71 6
UEI-5/10-Q12 24 9.5 8.25 6.21 12
UEI-5/12-Q48 48 17.3 16.0* 3.70 6
UEI-12/4.2-Q12 24 9.5 8.5 6.31 10
UEI-12/5-Q48 48 17.5 16.7 3.88 6
UEI-15/3.3-Q12 24 9.5 8.5 45 6.15 9
UEI-15/4-Q48 48 17.2 16.3 30 3.77 6
OUTPUT CHARACTERISTICS
Model Family
IOUT
Max.
V
OUT
Accuracy
Adjustment
Range
Temperature
Coeffi cient
Remote Sense
Compensation
Capacitive Loading Max.
Overvoltage
protection
Minimum
loading
OV
protection
method
Ripple/Noise
(20 MHz
bandwidth)
8
Line/Load
Regulation
Effi ciency
50% Load Low ESR, resistive load
Hiccup auto-start
after fault removal
A % of V
NOM % of VNOM % of VOUT /ºC % of VOUT max. µF V
UEI-3.3/15-Q12 15
±2
±10 ±0.02
+5
2,000
3.9
No
mini-
mum
load
Magnetic
feedback
See ordering guide
UEI-3.3/18-Q48 18
±1
+5 3.9
UEI-5/10-Q12 10 +5 5.9
UEI-5/12-Q48 12 +5 6.4
UEI-12/4.2-Q12 4.2
Not Available
16.5
UEI-12/5-Q48 5 16
UEI-15/3.3-Q12 3.3 24
UEI-15/4-Q48 4 21.5
*At 50% load
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Q12 models
Volts, max. continuous 0-36 VDC to rated specifi cations
Volts, transient, 100 mSec
50 VDC, no damage
Q48 models
Volts, max. continuous
0-75 VDC to rated specifi cations
Volts, transient, 100 mSec 100 VDC, no damage
On/Off control, referred to –Vin -0.7 V. min to +15V max.
Input Reverse Polarity Protection See fuse section
Output Overvoltage V
OUT nom. +20% max.
Output Current
Current-limited. Devices can
withstand sustained short circuit
without damage. The outputs are
not intended to accept appreci-
able reverse current.
Overtemperature Protection
Device includes electronic over-
temperature shutdown protection
under normal operation.
Storage Temperature
-55 to +125° C.
Lead Temperature See soldering specifi cations
Absolute Maximum Ratings
Absolute maximums are stress ratings. Exposure of devices to
greater than any of these conditions may adversely affect long-term
reliability. Proper operation under conditions other than those listed
in the Performance/Functional Specifi cations Table is not implied nor
recommended.
Maximum Ratings Notes
The UEI-50/60W series does not include electronic Input Overvoltage
Protection. Therefore it is possible for the input to exceed the con-
tinuous ratings listed above and still operate. However, units are not
routinely Production-tested above the continuous ratings. Therefore,
the rated specifi cations do not apply at excessive input voltage and
performance is undetermined.
The transient specifi cations indicate that sample lots were suc-
cessfully tested for 100 mS at the transient stress voltage and were
not damaged. As a practical matter in your application, it is often
diffi cult to determine how long an input overvoltage was applied.
Therefore, do not exceed the continuous voltage rating.
FUNCTIONAL SPECIFICATIONS