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 95% no heat-sink is required.
The compact TO-220 compatible SIP3 package measures only 11.6 x 8.5 x 10.4mm, so it saves
precious board space.
3
EAR
rranty
Selection Guide
Part
Number
R-78E3.3-0.5
R-78E5.0-0.5
R-78E9.0-0.5
R-78E12-0.5
R-78E15-0.5
Input
Voltage Range
[VDC]
6-28
7-28
12-28
15-28
18-28
Output
Voltage
[VDC]
3.3
5
9
12
15
Output
Current
[mA]
500
500
500
500
500
Efficiency
typ
(1)
[%]
75-88
82-92
89-94
92-95
93-95
Max. Capacitive
Load
(2)
[µF]
220
220
220
220
220
Notes:
Note1: test by maximum/minimum input, full load and @25°C.
Note2: test by minimum input and constant resistive load.
Specifications
(measured @ ta= 25°C, full load, nominal input voltage and after warm-up)
BASIC CHARACTERISTICS
Parameter
Nominal Input Voltage
Input Current
Minimum Load
(3)
Operating Frequency
Output Ripple and Noise
20MHz bandwidth
3.3, 5, 9Vout
12, 15Vout
@ no load
2%
570kHz
50mVp-p
70mVp-p
IEC60950-1 certified
EN60950-1 certified
Condition
Min.
Typ.
24VDC
1.5mA
Max.
Notes:
Note3: recommend to use with more than 2% load, if not, the ripple of the product may exceeds the
specification, but doesn’t affect the reliability of the product.
Efficiency vs Load
100
90
80
70
60
50
40
30
20
10
0
0
0.1
R-78E5.0-0.5
Efficiency [%]
7Vin
12Vin
24Vin
28Vin
0.2
0.3
0.4
0.5
Load Current [A]
www.recom-power.com
REV.: 2/2017
I-1
R-78E-0.5
DC/DC Converter
Specifications
(measured @ ta= 25°C, full load, nominal input voltage and after warm-up)
REGULATIONS
Parameter
Output Voltage Accuracy
Line Voltage Regulation
Load Voltage Regulation
low line to high line, full load
10% to 100% load
Series
Condition
Value
±3.0% typ.
±0.5% typ.
±1.0% typ.
PROTECTIONS
Parameter
Short Circuit Protection (SCP)
Condition
Value
continuous, automatic recovery
ENVIRONMENTAL
Parameter
Operating Temperature Range
Maximum Case Temperature
Vibration
MTBF
MIL-HDBK 217F, +25°C
MIL-HDBK 217F, +70°C
100
80
60
40
20
0
-40
Condition
natural convection and with derating
Value
-40°C to +85°C
100°C
10-55Hz, 2G, 30min along X,Y,Z
4185 x 10
3
hours
2182 x 10
3
hours
Derating Graph
Output Power [%]
0
20
40
60
80
85
100
Ambient Temperature [°C]
SAFETY AND CERTIFICATIONS
Certificate Type (Safety)
Information Technology Equipment, General Requirements for Safety (LVD)
Report / File Number
LVD1603123
Standard
IEC/EN60950-1, 2nd Edition, Am2:2013
EMC Compliance
Information technology equipment - Radio disturbance characteristics - Limits and
methods of measurement
Condition
with external filter
Standard / Criterion
EN55022, Class A or B
EMI Filter suggestion Class A and B
+V
IN
L1
R-78Exx-0.5
C1
C2
+V
OUT
GND
GND
Level
Class A
Class B
I-2
C1
1206 4.7µF, 50V MLCC
1210 10µF, 50V MLCC
L1
3.3µH
10µH
C2
NA
1206 4.7µF, 50V MLCC
www.recom-power.com
REV.: 2/2017
R-78E-0.5
DC/DC Converter
Specifications
(measured @ ta= 25°C, full load, nominal input voltage and after warm-up)
DIMENSIONS and PHYSICAL CHARACTERISTICS
Parameter
Material
Package Dimension (LxWxH)
Package Weight
Series
Condition
Case
Potting
Value
UL94V-0, non-conductive black plastic
UL94V-0, Silicone
11.6 x 8.5 x 10.4mm
2g typ.
Dimension Drawing (mm)
embossed logo
11.6
R-78Exx-0.5
0.51
8.5
R-78Exx-0.5
10.4
Marking
xxxx
xxxx
0.5
3.21
5.08
4.10
0.25
Ø1.0 +0.15/-0
Top View
1 2 3
Pin Connections
Pin #
1
2
3
Function
+Vin
GND
+Vout
Bottom View
2.54
2.0
2.54
Tolerance: xx.x= ±0.50mm
xx.xx= ±0.25mm
INSTALLATION AND APPLICATION
Standard Application:
+V
IN
R-78Exx-0.5
10µF MLCC
(optional)
+V
OUT
C1
10µF MLCC
(optional)
C2
GND
Notes:
Note4: The R-78Exx-0.5 can’t be used as positive to negativ converter.
GND
PACKAGING INFORMATION
Parameter
Packaging Dimension (LxWxH)
Packaging Quantity
Storage Temperature Range
Type
Tube
Value
520.0 x 11.2 x 18.2mm
42pcs
-55°C to +125°C
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.
随着阅读器与标签价格的降低和全球市场的扩大，射频标识 RFID(以下简称RFID)的应用与日俱增。标签既可由阅读器供电(无源标签)，也可以由标签的板上电源供电(半有源标签和有源标签)。由于亚微型无源 CMOS 标签的成本降低，库存和其他应用迅速增加。一些评估表明，随着无源标签的价格持续下降，几乎每一个售出产品的内部都将有一个 RFID 标签。由于无源 RFID 标签的重要性及其独特的工程实现...[详细]
MEMS传感器
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