Datasheet

I-1
REV.: 0/2016www.recom-power.com
DC/DC Converter
3
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Specifications (measured @ ta= 25°C, full load, nominal input voltage and after warm-up)
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Nominal Input Voltage 24VDC
Input Current @ no load 1.5mA
Minimum Load
(3)
2%
Operating Frequency 570kHz
Output Ripple and Noise 20MHz bandwidth
3.3, 5, 9Vout
12, 15Vout
50mVp-p
70mVp-p
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 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.
Features
Switching
Regulator
• Low Cost Switching Regulator
• High Start-up Current Capability
• Efficiency up to 95%
• Short Circuit Protection
• Pin Compatible with 78 Series Regulators
• Non Isolated DC-DC Converter
• IEC/EN60950-1, Am2 Certified
500mA
SIP3
Single
Output
R-78E-0.5
Selection Guide
Part Input Output Output Efficiency Max. Capacitive
Number Voltage Range Voltage Current typ
(1)
Load
(2)
[VDC] [VDC] [mA] [%] [µF]
R-78E3.3-0.5 6-28 3.3 500 75-88 220
R-78E5.0-0.5 7-28 5 500 82-92 220
R-78E9.0-0.5 12-28 9 500 89-94 220
R-78E12-0.5 15-28 12 500 92-95 220
R-78E15-0.5 18-28 15 500 93-95 220
IEC60950-1 Certified
EN60950-1 Certified
Efficiency vs Load
R-78E5.0-0.5
7Vin
12Vin
24Vin
28Vin
Efficiency [%]
Load Current [A]
0
100
90
80
70
60
50
40
30
20
10
0
0.1 0.2 0.3 0.4 0.5
Notes:
Note1: test by maximum/minimum input, full load and @25°C.
Note2: test by minimum input and constant resistive load.
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.