UEI25 查看數據表（PDF） - Murata Manufacturing
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UEI25 Datasheet PDF : 23 Pages
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UEI25 Series
Single Output Isolated 25-Watt DC/DC Converters
FUNCTIONAL SPECIFICATIONS – MODEL UEI25-033-D48
ABSOLUTE MAXIMUM RATINGS
Conditions ➀
Minimum
Typical/Nominal
Maximum
Units
Input Voltage, Continuous
Full power operation
0
80
Vdc
Input Voltage, Transient
Operating or non-operating, 100 mS max.
duration
0
100
Vdc
Isolation Voltage
Input to output tested 100 mS
2250
Vdc
Input Reverse Polarity
None, install external fuse
None
Vdc
On/Off Remote Control
Power on or off, referred to -Vin
0
15
Vdc
Output Power
0
25.25
W
Output Current
Current-limited, no damage, short-circuit protected
0
7.5
A
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
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 Specifications Table is not implied or recommended.
INPUT
Operating voltage range
36
48
75
Vdc
Recommended External Fuse
Fast blow
1.5
A
Start-up threshold
Rising input voltage
34
35.2
36
Vdc
Undervoltage shutdown
Falling input voltage
32
34.0
35.2
Vdc
Overvoltage shutdown
None
Vdc
Reverse Polarity Protection
None, install external fuse
None
Vdc
Internal Filter Type
LC
Input current
Full Load Conditions
Vin = nominal
0.58
0.60
A
Low Line
Vin = minimum
0.79
0.81
A
Inrush Transient
0.05
A2-Sec.
Output in Short Circuit
50
100
mA
No Load
Iout = minimum, unit=ON
75
100
mA
Standby Mode (Off, UV, OT)
1
2
mA
Reflected (back) ripple current ➁
Measured at input with specified filter
30
mA, RMS
Pre-biased startup
External output voltage < Vset
Monotonic
GENERAL and SAFETY
Efficiency
Vin=48V, full load
87
89.5
%
Vin=36V, full load
86.5
87.5
%
Isolation
Isolation Voltage
Input to output, continuous
2250
Vdc
Insulation Safety Rating
basic
Isolation Resistance
10
Mohm
Isolation Capacitance
1000
pF
Safety
Certified to UL-60950-1, CSA-C22.2 No.60950-1,
IEC/EN60950-1, 2nd edition
Yes
Calculated MTBF
Per MIL-HDBK-217F, ground benign,
Tambient=+30˚C
TBD
Hours x 106
Calculated MTBF
Per Telcordia SR332, issue 1, class 3, ground
fixed, Tambient=+40°C
2
Hours x 106
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
300
330
360
KHz
Startup Time
Power On to Vout regulated
50
mS
Startup Time
Remote ON to Vout regulated
50
mS
Dynamic Load Response
50-75-50% load step, settling time to within
±2% of Vout
180
250
μSec
Dynamic load di/dt
2
A/μSec
Dynamic Load Peak Deviation
same as above
±30
±100
mV
FEATURES and OPTIONS
Remote On/Off Control ➃
"N" suffix
Negative Logic, ON state
ON = Ground pin or external voltage
-0.7
1.2
V
Negative Logic, OFF state
OFF = Pin open or external voltage
10
15
V
Control Current
1
mA
"P" suffix
Positive Logic, ON state
ON = Pin open or external voltage
10
15
V
Positive Logic, OFF state
OFF = Ground pin or external voltage
-0.7
1.2
V
Control Current
1
mA
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MDC_UEI25W.B03 Page 3 of 23
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