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EC 34 www.recom-international.comAugust 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 10µF, 50V
48V type 10µF, 100V
Cout all types 100µF, 25V
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www.recom-international.com EC 35August 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 RSO05xx; 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 capacitance 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 TA = 25°C, 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 –40°C to +80°C (see graph)
Storage Temperature Range –50°C to +125°C
Efficiency up to 80%
Package Style and Pinning (mm)
12 53678
3.20 typ.
0.25±0.05
2.0±0.50
9.20 max.
21.80 max.
0.50±0.05
3.10min.
0.50±0.05
11.10 max.
RSO-0505
RECOM
****
2.54 typ.
2.54
2.54
1.0ø+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 performance over the full line load range. All
parts have been tested and characterised
using the following recommended values
and test circuit.
Output Power (Watts)
2.0
1.5
0.5
1.0
100500-40
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
5NENo exernal connection
allowed
6+Vout Positive output
7 OVout Negative output
8CS Optional external capacitor
C
in
C
out
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