EC 34
www.recom-international.com
August 2002
ECONOLINE - DC/DC-Converter
RSO Series, 1 Watt, SIP8, Regulated, Isolated (Single Output)
2:1 Wide Range Voltage Input
1kVDC Isolation
Efficiency to 83%
UL 94V-0 Package Material
0.05% typ. Line Regulation
Continuous Short Circiut Protection
with Current Foldback
Low Noise
Features
Selection Guide
5V, 12V, 24V and 48V Input Types
Part Number
Input
Rated Output
Output Current
Package
Voltage Range
Voltage
at Full Load
Style
SIP8
(VDC)
(VDC)
(mA)
RSO-0505
5-9
5
200
RSO-0509
5-9
9
111
RSO-0512
5-9
12
83
RSO-0515
5-9
15
66
RSO-1205
9-18
5
200
RSO-1209
9-18
9
111
RSO-1212
9-18
12
83
SIP8
RSO-1215
9-18
15
66
RSO-2405
18-36
5
200
RSO-2409
18-36
9
111
RSO-2412
18-36
12
83
RSO-2415
18-36
15
66
RSO-4805
36-72
5
200
RSO-4809
36-72
9
111
RSO-4812
36-72
12
83
RSO-4815
36-72
15
66
Capacitance
Cin
5V, 12V & 24V types
10F, 50V
48V type
10F, 100V
Cout
all types
100F, 25V
www.recom-international.com
EC 35
August 2002
All RSO-XXXX types 10uF, 100V
Philips Part No. 15162109
100uF, 25V
Philips Part No. 13556101
Pin 3 (CTRL)
This pin provides an Off function which puts
the converter into a low power mode. When
the pin is `high' the converter is OFF and
when the pin is high `Z' the converter is ON.
There is no allowed low state for this pin.
Voltage to be applied via a limiting resistor
with a recommended value of 1K for RSO-
05xx; 3.3K for RS-12xx; RS-24xx and 10K
for RS-48xx)
Pin 5 (NE)
This pin is used internally and must have no
external connection.
Pin 8 (Cs)
This pin provides a connection point to the
main reservoir capacitor. Additional capaci-
tance can be added from this to pin 7. Any
low esr capacitor will improve ripple and
noise in some measure. The benefit of this
access point over simple additional output
filter inductor. Maximum values of external
capacitance will be depend on the output
voltage/loading of the converter and the
desired ripple figure. Starting values can be
in the range of 100uF.
ECONOLINE - DC/DC-Converter
RSO Series, 1 Watt, SIP8, Regulated, Isolated (Single Output)
Electrical Specifications
(measured at T
A
= 25C, at nominal input voltage and rated output current unless otherwise specified)
Input Voltage Range
2:1
Output Accuracy
1% typ.
Rated Power
1 W max.
Isolation Voltage
1kVDC
Ripple & Noise (B/W = 20MHz)
50mV p-p max.
Line Regulation
0.2% max.
Load Regulation (10% to 100% Load)
0,5% max.
Switching Frequency at Full Load
85kHz min.
Short Circuit Protection
Continuous
Operating Temperature Range
40C to +80C (see graph)
Storage Temperature Range
50C to +125C
Efficiency
up to 80%
Package Style and Pinning (mm)
1 2
5
3
6 7 8
3.20 typ.
0.250.05
2.00.50
9.20 max.
21.80 max.
0.500.05
3.10min.
0.500.05
11.10 max.
RSO-0505
RECOM
****
2.54 typ.
2.54
2.54
1.0+0.15/0
Recommended Footprint Details
8 Pin SIP Package Style
Control Pin Input Current:
10mA
Voltage Set Point Accuracy
with external input/output
capacitors refer to
typ. 1%
recommended test circuit:
max. 2%
Control Pin (CTRL) Input
Current, control voltage
applied via 1K resistor,
output voltage must
typ. 3mA
reduce to 0V:
max. 6mA
External capacitance
Although these converter will work without
external capacitors, they are necessary in
order to guarantee the full parametric per-
formance over the full line load range. All
parts have been tested and characterised
using the following recommended values
and test circuit.
Output Power (W
atts)
2.0
1.5
0.5
1.0
100
50
0
-40
80
125
150
Operating Temperature C
0
Safe Operating Area
0V
D
2
V
O
External
Cap.
+
Pin 7
C
S
Pin 8
L
1
C
6
C
5
+
Pin Connections
Pin # Single Description
1 GND
Negative
input
2 +Vin
Positive
input
3
CTRL
Control input can
(can be left open)
4
Not fitted
5
NE
No exernal connection
allowed
6
+Vout
Positive output
7 OVout
Negative
output
8
CS
Optional external capacitor
C
in
C
out
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