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Data Sheet

ManualsBrandsSparkfun Electronics Manuals5.0 V DC RegulatorsDC/DC Converter - 5V 5W (R-78E)
123
I-1
REV.: 4/2017www.recom-power.com
DC/DC Converter
3
Y
E
A
R
w
a
r
r
a
n
t
y
3
Specifications (measured at ta= 25°C, full load, nominal input voltage and after warm-up)
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Input Voltage Range
3.3V
5.0V
7VDC
8VDC
24VDC 28VDC
Input Current min. Vin 1.5mA 1000mA
No Load Input Current typ. Vin 1.5mA
Operating Frequency Vin= 12VDC 330kHz
Output Ripple and Noise
typ. Vin, full load and 20MHz BW limited 120mVp-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 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.
Features
Switching
Regulator
• Efficiency up to 91%, no need for heatsinks!
• Pin-out compatible with LM78XX linear regs.
• Low profile (L*W*H=11.6*8.5*10.4mm)
• Wide input range (7V - 28V)
• Short circuit protection
• IEC/EN60950-1, Am2 certified
1.0 AMP
SIP3
Single
Output
R-78E-1.0
Selection Guide
Part Input Output Output Efficiency Max. Capacitive
Number Voltage Range Voltage Current typ @ min Vin. Load
[VDC] [VDC] [mA] [%] [µF]
R-78E3.3-1.0 7 - 28 3.3 1000 87 220
R-78E5.0-1.0 8 - 28 5.0 1000 91 220
IEC60950-1 certified
EN60950-1 certified
Efficiency vs. Load
7V
12V
24V
28V
8V
12V
24V
28V
Efficiency [%]
Output Current [A]
0
75
80
85
90
95
100
0.2 0.4 0.6 0.8 1.0
Efficiency [%]
Output Current [A]
0
70
75
80
85
90
95
100
0.2 0.4 0.6 0.8 1.0
R-78E3.3-1.0 R-78E5.0-1.0

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