R-78xx-0.5
DC/DC Converter
Specifications (measured @ Ta= 25°C, 10% minimum load, unless otherwise stated)
Series
BASIC CHARACTERISTICS
Parameter
Absolute Maximum Input Voltage
Quiescent Current
Internal Power Dissipation
Minimum Load (3)
Internal Operating Frequency
Output Ripple and Noise
Absolute Maximum
Capacitive Load
Condition
nom. Vin= 24VDC
20MHz BW, without output
capacitor
1.5 - 6.5VDC
9 - 15.5VDC
20MHz BW (4)
1.5VDC
1.8 - 15.5VDC
1 second start up, no external components
<1 second start up + diode protection circuit
Min.
0%
280kHz
Typ.
5mA
330kHz
20mVp-p
30mVp-p
15mVp-p
25mVp-p
Notes:
Note3: Operation under no load will not harm the converter, but specifications may not be met
A minimum load of 6mA is recommended
Note4: Measurements are made with a 100nF MLCC across output (low ESR)
Max.
34VDC
7mA
0.4W
380kHz
30mVp-p
40mVp-p
20mVp-p
35mVp-p
220µF
6800µF
Efficiency vs. Vin (full load)
100
90
80
70
60
50
40 15, 12Vout
30 9Vout
5Vout
20 3.3Vout
10
1.8Vout
1.5Vout
0
0
5 10
15 20
Input Voltage [VDC]
Efficiency vs. Load (max. Vin)
25
30 34
Ripple vs. Vin (full load)
50 15Vout
45 12Vout
9Vout
40 5Vout
35
3.3Vout
1.8Vout
30 1.5Vout
25
20
15
10
5
0
0
5 10
15 20
Input Voltage [VDC]
Ripple vs. Load (nom. Vin)
25
30 34
100 50 15Vout
90
45
12Vout
9Vout
80 40 5Vout
70
35
3.3Vout
1.8Vout
60 30 1.5Vout
50 25
40 15Vout
30 12Vout
5Vout
20 3.3Vout
10
1.8Vout
1.5Vout
0
0 10 20 30 40 50 60 70 80 90 100
20
15
10
5
0
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
continued on next page
Output Load [%]
www.recom-power.com
REV.: 5/2019
I-2
