Datasheet

www.recom-power.com
REV.: 3/2019 I-4
DC/DC Converter
Specifications (measured at Ta= 25°C, minimum load, otherwise specified)
R-78C-1.0
Series
INSTALLATION AND APPLICATION
Pin Connections
Pin # Negative Positive
1 +Vin +Vin
2 -Vout GND
3 GND +Vout
C1
10µF/50V
C2
10µF/50V
1
2
3
GND
-V
OUT
+VIN
GND
R-78Cxx-1.0
C1
10µF/50V
C2
10µF/50V
1
2
3
GND
+V
IN +VOUT
-VOUT
GND
R-78Cxx-1.0
2
3
R-78Cxx-1.0
Positive to Negative Converter
Dual Output (two Converters) with Negative Output
Selection Guide - Negative Output
Part Input Output Output Efficiency
Number Voltage Range
(3)
Voltage Current @ min Vin @ max. Vin
[VDC] [VDC] [A] [%] [%]
R-78C1.8-1.0 5 - 38 -1.8 -0.8 69 70
R-78C3.3-1.0 7 - 37 -3.3 -0.8 77 80
R-78C5.0-1.0 8 - 35 -5 -0.7 79 83
R-78C9.0-1.0 12 - 31 -9 -0.6 85 87
R-78C12-1.0 15 - 28 -12 -0.5 87 89
R-78C15-1.0 18 - 25 -15 -0.5 89 90
Notes:
Note5: When connecting two R-78C together to create a dual output, both connectors must be connected in parallel
Connecting them in series might cause start-up problems of the second R-78C
Notes:
Note4: When using the R-78C as positive-to-negative converter, the input voltage range is limited