• Twin independent outputs
• 1kVDC or 2kVDC input/output basic isolation
• 1kVDC output/output isolation
• Power sharing on outputs
• Standard and miniature versions
• Optional continued short circuit protected
• Efficiency up to 76%
Features
Unregulated
Converters
Description
The RU DC/DC converter offers two independent isolated outputs. Typical applications include multiple
channel circuits where inter-channel isolation is also required. The RUM offers similar specifications
in a miniature case for applications where space is at a premium. Both converters offer
1KVDC input/output isolation and 1kVDC output/output isolation. The /H versions offer 2kVDC isolation
between input and outputs.
DC/DC Converter
RU/RUM
1 Watt
SIP7
Isolated
Dual Output
Selection Guide
Part
Number
nom. Input
Voltage
Output
Output
Voltage V1 Voltage V2
[VDC]
RU-3.30505 (3,4)
3.3
RU-050505 (3,4)
RUM-3.30505 (3,4)
RUM-050505
(3,4)
Output Efficiency max. Capacitive
Current
typ. (1) Load (2)
[VDC] [VDC] [mA] [%]
[µF]
5
5 100/100 76
470/470
5
5
5 100/100 72
470/470
3.3
5
5 100/100 78
470/470
5
5
5 100/100 72
470/470
Notes:
Note1: Efficiency is tested at nominal input and full load at +25°C ambient
Note2: Max Cap Load is tested at nominal input and full resistive load and is defined as the
capacitive load that will allow start up in under 1s without damage to the converter
Model Numbering
IEC60950-1 certified
EN60950-1 certified
RU- __ _ _/_
nom. Input Voltage
Output Voltage
Protection (3)
Isolation Option (4)
RUM- __ _ _/_
nom. Input Voltage
Output Voltage
Protection (3)
Isolation Option (4)
Notes:
Note3: standard part is without continuous short circuit protection
add suffix „/P“ for continuous short circuit protection
Note4: add suffix „/H“ for 2kVDC isolation
or add suffix „/HP“ for 2kVDC isolation and continuous short circuit protection
Ordering Examples:
RU-050505/P= 5V Input Voltage, 5V Output Voltage (V1VDC), 5V Output Voltage (V2VDC) with
continuous short circuit protection
RUM-3.30505/HP= 12V Input Voltage, 24V Output Voltage (V1VDC), 24V Output Voltage (V2VDC) with
2kVDC isolation and continuous short circuit protection
www.recom-power.com
REV.: 1/2018
ECO-1
RU/RUM
DC/DC Converter
Series
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
BASIC CHARACTERISTICS
Parameter
Condition
Min.
Typ.
Input Voltage Range
0%
Minimum Load (5)
Internal Operating Frequency
Output Ripple and Noise
Max.
±10%
20kHz
70kHz
RU
RUM
20MHz BW
105kHz
75mVp-p
100mVp-p
Notes:
Note5: Operation below 10% load will not harm the converter, but specifications may not be met
Efficiency vs. Load
100
90
Efficiency [%]
80
70
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
Output Load [%]
REGULATIONS
Parameter
Condition
Value
Output Accuracy
±5.0% max.
Line Regulation
low line to high line
Load Regulation
±1.2% of 1.0% Vin typ.
15.0% max.
10.0% max.
3.3, 5Vout
12, 15, 24Vout
10% to 100% load
Deviation vs. Load
25
20
Deviation [%]
15
10
5
0
-50
-10
0
10
20
30
40
50
60
70
80
90
100
Output Load [%]
continued on next page
www.recom-power.com
REV.: 1/2018
ECO-2
RU/RUM
DC/DC Converter
Series
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
PROTECTIONS
Parameter
Type
Value
without suffix
with suffix “/P”
Short Circuit Protection (SCP)
I/P to O/P
Isolation Voltage (6)
1 second
continuous
without suffix
tested for 1 second
rated for 1 minute
1kVDC
500VAC / 60Hz
with suffix
“/H”
tested for 1 second
rated for 1 minute
2kVDC
1kVAC / 60Hz
tested for 1 second
1kVDC
10GΩ min.
O/P1 to O/P2
Isolation Resistance
Isolation Capacitance
20pF min. / 94pF max.
Insulation Grade
basic
Notes:
Note6: For repeat Hi-Pot testing, reduce the time and/or the test voltage
Note7: Refer to local wiring regulations if input over-current protection is also required. Recommended fuse: T1A slow blow type
ENVIRONMENTAL
Parameter
Condition
Operating Temperature Range
Value
full load @ free air convection (see graph)
Operating Altitude
-40°C to + 85°C
2000m
Operating Humidity
non-condensing
95% RH max.
Pollution Degree
PD2
MTBF
according to MIL-HDBK-217F, G.B.
+25°C
+85°C
1012 x 10³ hours
151 x 10³ hours
Derating Graph
(@free air convection)
100
90
Output Load [%]
80
70
60
50
40
30
20
10
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110
85
Ambient Temperature [°C]
SAFETY AND CERTIFICATIONS
Certificate Type (Safety)
Information Technology Equipment, General Requirements for Safety
EAC
Report / File Number
1602031
RU-AT.49.09571
RoHs 2+
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Standard
IEC60950-1:2005, 2nd Edition + A2:2013
EN60950-1:2006 + A2:2013
TP TC 004/2011
RoHS-2011/65/EU + AM-2015/863
REV.: 1/2018
ECO-3
RU/RUM
DC/DC Converter
Series
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
DIMENSION AND PHYSICAL CHARACTERISTICS
Parameter
Material
Package Dimension (LxWxH)
Type
Value
case
potting
PCB
RU
RUM
non-conductive black plastic (UL94 V-1)
epoxy, (UL94 V-0)
FR4, (UL94 V-1)
19.65 x 7.0 x 10.2mm
16.55 x 6.0 x 7.7mm
Package Weight
2.7g typ.
Dimension Drawing (mm)
RU
SIP7 Package
Pinning information
Pin #
1
2
4
5
6
7
embossed logo
19.6
10.2
6.0
0.51
Marking
0.51
0.25
4.10
+0.10/-0.05
Single
+Vin
-Vin
+Vout 1
-Vout 1
+Vout 2
-Vout 2
Tolerance:
xx.x= ±0.5mm
xx.xx= ±0.25mm
2.0
Bottom View
4 5 6 7
1.27
1 2
2.54
Recommended Footprint Details
1 2
6x2.54= 15.24
RUM
4 5 6 7
Top View
2.54
SIP6 Package
Pinning information
embossed logo
6.0
7.7
16.55
0.51+0.10/-0.05
0.25±0.05
4.10
0.51
Marking
1.9
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5x2.54 = 12.70
1.27
Bottom View
1 2 3 4 5 6
Single
+Vin
-Vin
+Vout 1
-Vout 1
+Vout 2
-Vout 2
Tolerance:
xx.x= ±0.5mm
xx.xx= ±0.25mm
2.54
Recommended Footprint Details
Pin #
1
2
3
4
5
6
1 2 3 4 5 6
Top View
2.54
REV.: 1/2018
ECO-4
RU/RUM
DC/DC Converter
Series
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
INSTALLATION AND APPLICATION
Typical Application
fuse
Channel 1
Channel 2
PACKAGING INFORMATION
Parameter
Type
Value
Packaging Dimension (LxWxH)
tube
520.0 x 16.0 x 9.0mm
Packaging Quantity
RU
RUM
tube
Storage Temperature Range
25pcs
30pcs
-55°C to + 125°C
Storage Humidity
95% RH max.
The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer. The
products are not authorized for use in safety-critical applications without RECOM’s explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause
loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized
use of RECOM products in such safety-critical applications.
www.recom-power.com
REV.: 1/2018
ECO-5
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