www.recom-power.com REV.: 3/2019 ECO-1
Features
Unregulated
Converters
• Micro size SIP4 package
• 3kVDC/1s basic isolation
• Industry standard pinout
• Optional continuous short circuit protection
• UL94V-0 package material
• Efficiency up to 85%
ROM
Description
The ROM Micro Size DC/DC converter has been designed for isolating or converting DC power rails
where board height is at a premium. Although it has a micro-size 7.7mm package, it does not compro-
mise on features and offers a high 3kVDC Isolation , a –40°C to +85°C operating temperature range
and optional continuous short circuit protection.
DC/DC Converter
1 Watt
SIP4
Micro Size
Single Output
UL60950-1 certified
CAN/CSA-C22.2 No 60950-1 certified
EN60950-1 certified
IEC60950-1 certified
EN55032 compliant
CB report
E358085
Selection Guide
Part nom. Input Output Output Efficiency max. Capacitive
Number Voltage Voltage Current typ.
(1) Load
(2)
[VDC] [VDC] [mA] [%] [µF]
ROM-xx05S (3) 3.3, 5, 12 5 200 70-78 1000
ROM-xx12S (3) 3.3, 5, 12 12 83 78-82 470
ROM-xx15S (3) 3.3, 5, 12 15 67 80-84 470
Model Numbering
Notes:
Note3: standard part is without continuous short circuit protection
add suffix „/P“ for continuous short circuit protection
Ordering Examples:
ROM-1205S: 12VDC Input Voltage, 5VDC Output Voltage, Single Output
ROM-0515S/P: 5VDC Input Voltage, 15VDC Output Voltage, Single Output with continuous short circuit protection
nom. Input Voltage
Output Voltage
ROM- __ S/
“Protection (3)”
Single
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
www.recom-power.com REV.: 3/2019 ECO-2
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin and full load otherwise stated)
ROM
Series
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Input Voltage Range ±10%
Minimum Load 0%
Internal Operating Frequency 50kHz 100kHz 105kHz
Output Ripple and Noise 20MHz BW 100mVp-p
Efficiency vs. Load
ROM-xx05S ROM-xx12S
ROM-xx15S
0 10 20 30 40 50 60 70 80 90
100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
3.305
0505
1205
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
3.312
0512
1212
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
3.315
0515
1215
REGULATIONS
Parameter Condition Value
Output Accuracy ±5.0% max.
Line Regulation low line to high line ±1.2% of 1.0% Vin typ.
continued on next page
www.recom-power.com REV.: 3/2019 ECO-3
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin and full load otherwise stated)
ROM
Series
Parameter Condition Value
Load Regulation (5) 10% to 100% load 5Vout
12, 15Vout
15.0% max.
10.0% max.
Deviation vs. Load
ROM-xx05S ROM-xx12S
ROM-xx15S
25
15
5
-50
20
10
0
-10
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
3.305
0505
1205
25
15
5
-50
20
10
0
-10
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
3.312
0512
1212
25
15
5
-50
20
10
0
-10
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
3.315
0515
1215
PROTECTIONS
Parameter Type Value
Short Circuit Protection (SCP) without suffix
with suffix “/P”
1 second
continuous
Isolation Voltage (6) I/P to O/P tested for 1 second
rated for 1 minute
3kVDC
1.5kVAC/60Hz
Isolation Resistance 15GΩ min.
Isolation Capacitance 20pF min. / 75pF max.
Insulation Grade basic (IEC/EN60950-1)
functional (IEC/EN60601-1)
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
Notes:
Note5: Operation below 10% load will not harm the converter, but specifications may not be met
www.recom-power.com REV.: 3/2019 ECO-4
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin and full load otherwise stated)
ROM
Series
ENVIRONMENTAL
Parameter Condition
Value
Operating Temperature Range full load @ free air convection (see graph) -40°C to +85°C
Operating Altitude 2000m (IEC/EN60950-1)
3000m (IEC/EN60601-1)
Operating Humidity non-condensing 95% RH max.
Pollution Degree PD2
MTBF according to MIL-HDBK-217F, G.B. +25°C
+85°C
977 x 103 hours
189 x 103 hours
-40 -20 0 20 40 7060-30 -10 10 30 50 80 90
85
110100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
Derating Graph
(@ free air convection)
SAFETY AND CERTIFICATIONS
Certificate Type (Safety) Report / File Number Standard
Information Technology Equipment, General Requirements for Safety E358085-A4-UL UL60950-1, 2nd Edition:2007
CAN/CSA C22.2 No. 60950-1-03, 2nd Edition:2007
Information Technology Equipment, General Requirements for Safety (CB) E322406-A4-CB-1 IEC60950-1:2005, 2nd Edition
Information Technology Equipment, General Requirements for Safety LVD1602031 IEC60950-1:2005, 2nd Edition + A2:2013
EN60950-1:2006 + A2:2013
Medical electrical equipment Part 1: General requirements for basic
safety and essential performance WD-SE-R-180676-A0 EN60601-1:2006 + A12:2014
IEC60601-1:2005 + A1:2012, 3rd Edition
EAC RU-AT.49.09571 TP TC 004/2011
RoHS 2 RoHS-2011/65/EU + AM-2015/863
EMC Compliance Condition Standard / Criterion
Electromagnetic compatibility of multimedia equipment -
Emission requirements
with external filter
(refer to “EMC Filter”)EN55032, Class A and B
continued on next page
www.recom-power.com REV.: 3/2019 ECO-5
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin and full load otherwise stated)
ROM
Series
DIMENSION AND PHYSICAL CHARACTERISTICS
Parameter
Type
Value
Material
case
potting
PCB
non-conductive black plastic (UL94 V-0)
epoxy, (UL94 V-0)
FR4, (UL94 V-0)
Dimension (LxWxH) 11.5 x 6.05 x 7.7mm
Weight 1g typ.
Pinning information
Pin # Single
1 -Vin
2 +Vin
3 -Vout
4 +Vout
Tolerance:
xx.x= ±0.5mm
xx.xx= ±0.25mm
1.00Ø +0.15/-0
2.54
2.54
Top View
0.51
1.27 7.7
0.51+0.10/-0.05
11.5
7.621.90
4.10
6.0
embossed logo
0.25
±0.05
Bottom View
1 2 3 4 1 2 3 4
0.7Ø+0.15/-0
1.80
1.00
Dimension Drawing (mm)
Recommended Footprint Details
L1
C
1
-Vout
+Vout
-Vin
+Vin
C3
C2
+Vout
+Vin
-Vout
-Vin
EMC Filter Suggestion according to EN55032
Component List Class A Component List Class B
MODEL C1 L1 C2 (safety) C3 (safety)
ROM-0505S 10µF
100V MLCC
22µH choke
RLS-226 1nF 2.2nFROM-1205S
ROM-2405S
MODEL C1 L1 C2 (safety) C3 (safety)
ROM-0505S 10µF
100V MLCC N/A N/A
N/A
ROM-1205S 2.2nF
ROM-2405S 2.2nF
Notes:
Note8: Filter suggestions are valid for indicated part numbers only. For other part numbers, please contact RECOM tech support for advice
www.recom-power.com REV.: 3/2019 ECO-6
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin and full load otherwise stated)
ROM
Series
PACKAGING INFORMATION
Parameter Type Value
Packaging Dimension (LxWxH) tube 520.0 x 16.0 x 9.0mm
Packaging Quantity tube 42pcs
Storage Temperature Range -55°C to +125°C
Storage Humidity non-condensing 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.
