Datasheet

www.recom-power.com
REV.: 4/2019 I-2
DC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm up unless otherwise specified)
R-78B-2.0
Series
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Input Voltage Range nom. Vin= 24VDC
1.2Vout - 3.3Vout
5Vout
9Vout
12Vout
15Vout
4.75VDC
6.5VDC
11VDC
15VDC
18VDC
24VDC 32VDC
Maximum Reverse Voltage 0V
Inrush Current 2A
Quiescent Current nom. Vin= 24VDC 2mA
Internal Power Dissipation Vout= 1.5VDC 0.35W 0.8W
Start-up time 10ms
Rise Time 50µs
Internal Operating Frequency nom. Vin= 24VDC 460kHz
Minimum Load 0%
Output Ripple and Noise
(2)
20MHz BW
Vout ≤3.3VDC
Vout ≥5VDC
50mVp-p
75mVp-p
Efficiency vs. Load
R-78B3.3-2.0
R-78B3.3-2.0
R-78B5.0-2.0
R-78B5.0-2.0
Efficiency vs. Input Voltage
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 [%]
4.75Vin
6Vin
9Vin
12Vin
15Vin
24Vin
32Vin
4.75 9 13 17 21 25 29 32
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Input Voltage [VDC]
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 [%]
6.5Vin
12Vin
15Vin
24Vin
32Vin
6.5 10 14 18 22 26 30 32
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Input Voltage [VDC]
Notes:
Note2: Measurements are made with a 100nF MLCC across output (low ESR)