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UEI25-120-D48 Datasheet(PDF) 5 Page - Murata Manufacturing Co., Ltd.

Part # UEI25-120-D48
Description  Single Output Isolated 25-Watt DC/DC Converters
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Manufacturer  MURATA [Murata Manufacturing Co., Ltd.]
Direct Link  http://www.murata.com
Logo MURATA - Murata Manufacturing Co., Ltd.

UEI25-120-D48 Datasheet(HTML) 5 Page - Murata Manufacturing Co., Ltd.

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UEI25-120 Series
Single Output Isolated 25-Watt DC/DC Converters
www.murata-ps.com
email: sales@murata-ps.com
17 Aug 2010
MDC_UEI25-120.A02 Page 5 of 11
OUTPUT
Conditions
Minimum
Typical/Nominal
Maximum
Units
Total Output Power
See Derating
0.0
25.2
25.45
W
Voltage
Nominal Output Voltage
No trim
11.88
12.00
12.12
Vdc
Setting Accuracy
At 50% load
-1
+1
% of Vset.
Output Voltage Range
User-adjustable
-10
+10
% of Vnom.
Overvoltage Protection
Via magnetic feedback
14
19
22
Vdc
Current
Output Current Range
0.0
2.1
2.1
A
Minimum Load
No minimum load
Current Limit Inception
97% of Vnom., after warmup
110
130
% of IoutMax
Short Circuit
Short Circuit Current
Hiccup technique, autorecovery within ±1.25%
of Vout
0.1
A
Short Circuit Duration (remove short for
recovery)
Output shorted to ground, no damage
Continuous
Short circuit protection method
Current limiting
Hiccup autorestart duty cycle
Output shorted to ground
TBD
%
Regulation
Line Regulation
Vin=min. to max., Vout=nom., 50% load
±0.075
% of Vout
Load Regulation
Iout=min. to max., Vin=48V
±0.05
% of Vout
Ripple and Noise
5 Hz- 20 MHz BW
95
120
mV pk-pk
Temperature Coefficient
At all outputs
0.02
% of Vnom./°C
Maximum Capacitive Loading (10% ceramic,
90% Oscon)
Cap. ESR=<0.02Ω, full resistive load
0
470
μF
MECHANICAL (Through Hole Models)
Conditions
➀ ➂
Minimum
Typical/Nominal
Maximum
Units
Outline Dimensions (no baseplate)
C75 case
0.96x1.1x0.32
Inches
(Please refer to outline drawing)
WxLxH
24.38x27.94x8.13
mm
Weight
0.32
Ounces
9.07
Grams
Through Hole Pin Diameter
0.04
Inches
1.016
mm
Through Hole Pin Material
Copper alloy
TH Pin Plating Metal and Thickness
Nickel subplate
TBD
μ-inches
Gold overplate
TBD
μ-inches
ENVIRONMENTAL
Operating Ambient Temperature Range
With derating, 200 LFM
-40
85
°C
Tref Location
Measured in center
Storage Temperature
Vin = Zero (no power)
-55
125
°C
Thermal Protection/Shutdown
Measured at hotspot
130
135
150
°C
Electromagnetic Interference
External filter is required
Conducted, EN55022/CISPR22
B
Class
Radiated, EN55022/CISPR22
B
Class
Relative humidity, non-condensing
To +85°C
10
90
%RH
Altitude
must derate -1%/1000 feet
-500
10,000
feet
-152
3048
meters
RoHS rating
RoHS-6
FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL UEI25-120-D48
Notes
➀ Unless otherwise noted, all specifications are at nominal input voltage, nominal output
voltage and full load. General conditions are +25˚ Celsius ambient temperature, near
sea level altitude, natural convection airflow. All models are tested and specified with
external parallel 1 μF and 10 μF multi-layer ceramic output capacitors. The external
input capacitor is 4.7 μF ceramic. All capacitors are low-ESR types wired close to the
converter. These capacitors are necessary for our test equipment and may not be
needed in the user's application.
➁ Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth.
Input filtering is Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂ All models are stable and regulate to specification under no load.
➃ The Remote On/Off Control is referred to -Vin.
➄ Regulation specifications describe the output voltage changes as the line voltage or
load current is varied from its nominal or midpoint value to either extreme.


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