R-78E-1.0 Series Datasheet by Recom Power

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www.recom-power.com REV.: 6/2019 I-1
Features
Switching
Regulator
Efficiency up to 91%, no need for heatsinks
Pin-out compatible with LM78XX linears
Low profile (L*W*H=11.6*8.5*10.4mm)
Wide input range (7V - 28V)
Short circuit protection
IEC/EN60950-1 + AM2 certified
R-78E-1.0
Description
The R-78E series is a switching regulator module that has been designed to offer all the advantages of a
switching regulator (high efficiency, wide input range, accurate output voltage regulation) but with a low
cost for production quantities. Due to the R-78E’s high efficiency of up to 91% at an output voltage of
5V/1A at the output, no heat sink is required. The compact TO- 220 compatible SIP3 package measures
only 11.6 x 8.5 x 10.4 mm, so it saves precious board space. The warranty is 3 years.
DC/DC Converter
1.0 Amp
SIP3
Single Output
IEC60950-1 certified
EN60950-1 certified
Selection Guide
Part Input Output Output Efficiency
(1) Max. Capacitive
Number Voltage Range Voltage Current typ @ min Vin. Load (2)
[VDC] [VDC] [A] [%] [µF]
R-78E3.3-1.0 7 - 28 3.3 1.0 87 220
R-78E5.0-1.0 8 - 28 5.0 1.0 91 220
Notes:
Note1: Efficiency is tested at nom. input voltage and full load
Note2: Max. Cap Load is tested by nominal input and full resistive load
Model Numbering
Specifications (measured at Ta= 25°C, full load, nominal input voltage and after warm-up)
Output Voltage Output Current
R-78E__-1.0
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Input Voltage Range nom. Vin = 24VDC 7VDC 24VDC 28VDC
Input Current min. Vin 1000mA
Quiescent Current 1.5mA
Internal Operating Frequency Vin= 12VDC 330kHz
Output Ripple and Noise (3) 20MHz BW 120mVp-p
continued on next page
Notes:
Note3: Measurements are made with a 100nF MLCC across output (low ESR)
REEDM vi 3:335 vi 3:335 Output Load [%] Outpm Load Flo]
www.recom-power.com REV.: 6/2019 I-2
DC/DC Converter
Specifications (measured at Ta= 25°C, full load, nominal input voltage and after warm-up)
R-78E-1.0
Series
Efficiency vs. Load
R-78E3.3-1.0 R-78E5.0-1.0
REGULATIONS
Parameter Condition Value
Output Accuracy ±3.0% typ. / ±5.0% max.
Line Regulation low line to high line, full load ±1.0% max.
Load Regulation typ Vin. and 10% to 100% load ±1.5% max.
PROTECTIONS
Parameter Condition Value
Short Circuit Protection (SCP) automatic recovery
Over Current Protection (OCP) 100% = 1A 200% Load
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 [%]
7Vin
12Vin
24Vin
28Vin
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 [%]
8Vin
12Vin
24Vin
28Vin
ENVIRONMENTAL
Parameter Condition
Value
Operating Temperature Range natural convection and with derating (see graph) -40°C to +85°C
Humidity non-condensing 95%, RH max.
MTBF according to MIL-HDBK-217F, G.B. +25°C 3875 x 103 hours
-40 -20 0 20 40 70
85
60-30 -10 10 30 50 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
Derating Graph
www.recom-power.com REV.: 6/2019 I-3
DC/DC Converter
Specifications (measured at Ta= 25°C, full load, nominal input voltage and after warm-up)
R-78E-1.0
Series
SAFETY AND CERTIFICATIONS
Certificate Type (Safety) Report / File Number Standard
Information Technology Equipment, General Requirements for Safety
1603123 IEC60950-1:2005, 2nd Edition + AM 2:2013
EN60950-1:2006 + AM2:2013
EAC RU-AT.49.09571 TP TC 004/2011
RoHS 2+ RoHS 2011/65/EU + AM2015/863
EMC Compliance Condition Standard / Criterion
Electromagnetic compatibility of multimedia equipment -
Emission requirements
with external filter
(see filter suggestion below) EN55032, Class A and B
EMC Filter Suggestion according to EN55032
R-78xx-1.0
C
1
C
2
GND
+V
out
+V
in
GND
+V
out
GND
+V
in
L
1
Component List Class A Component List Class B
MODEL C1 C2 L1
R-78E3.3-1.0 10µF
100V MLCC
2.2µF
100V MLCC
68µH choke
RLS-686
R-78E5.0-1.0
MODEL C1 C2 L1
R-78E3.3-1.0 10µF
100V MLCC
10µF
100V MLCC
12µH choke
RLS-126
R-78E5.0-1.0
DIMENSION and PHYSICAL CHARACTERISTICS
Parameter Condition Value
Material case
potting
non-conductive black plastic, (UL94 V-0)
silicone, (UL94 V-0)
Package Dimension (LxWxH) 11.6 x 8.5 x 10.4mm
Package Weight 2g typ.
Bottom View
Top View
embossed logo
321 321
2.00
8.511.6
0.70+0.10/-0.05
3.215.08
10.44.10
0.51
0.25±0.05
Marking
2.54
2.54
Dimension Drawing (mm)
Pin Connections
Pin # Function
1 +Vin
2 GND
3 +Vout
Tolerance: xx.x= ±0.50mm
xx.xx= ±0.25mm
Recommended Footprint Details
Notes:
Note4: 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.: 6/2019 I-4
DC/DC Converter
Specifications (measured at Ta= 25°C, full load, nominal input voltage and after warm-up)
R-78E-1.0
Series
INSTALLATION AND APPLICATION
10µF MLCC
(optional)
To protect the converter during power-up, use soft start power supply.
C1 C2
+VIN
GND
+VOUT
GND
R-78Exx-1.0
10µF MLCC
(optional)
Notes:
Note5: The R-78Exx-1.0 can not be used as positive to negative converter
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.
PACKAGING INFORMATION
Parameter Type Value
Packaging Dimension (LxWxH) tube 520.0 x 11.2 x 18.2mm
Packaging Quantity 42pcs
Storage Temperature Range -55°C to +125°C
Standard Application

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