ECONOLINE - DC/DC-Converter
RSO Series, 1 Watt, SIP8, Regulated, Isolated (Single Output)
Electrical Specifications
(measured at T
A
= 25°C, at nominal input voltage and rated output current unless otherwise specified)
Input Voltage Range
Output Accuracy
Rated Power
Isolation Voltage
Ripple & Noise (B/W = 20MHz)
Line Regulation
Load Regulation (10% to 100% Load)
Switching Frequency at Full Load
Short Circuit Protection
Operating Temperature Range
Storage Temperature Range
Efficiency
2:1
±1% typ.
1 W max.
1kVDC
Output Power (Watts)
1.5
1.0
Safe Operating Area
0.5
0
-40
0
50
100
125
150
80
Operating Temperature ˚C
2.0
50mV p-p max.
±0.2% max.
±0,5% max.
85kHz min.
Continuous
–40°C to +80°C (see graph)
–50°C to +125°C
up to 80%
Package Style and Pinning (mm)
8 Pin SIP Package Style
C
in
0.25±0.05
2.0±0.50
1 2 3
5 6 7 8
3.20 typ.
C
out
All RSO-XXXX types 10uF, 100V
Philips Part No. 15162109
100uF, 25V
Philips Part No. 13556101
Recommended Footprint Details
2.54
21.80 max.
9.20 max.
1.0ø+0.15/–0
2.54
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.
Control Pin Input Current:
11.10 max.
3.10min.
0.50±0.05
2.54 typ.
RSO-0505
RECOM
****
10mA
0.50±0.05
Voltage Set Point Accuracy
with external input/output
capacitors refer to
recommended test circuit:
Control Pin (CTRL) Input
Current, control voltage
applied via 1K resistor,
output voltage must
reduce to 0V:
typ. ± 1%
max. ±2%
Pin Connections
Pin # Single Description
1
2
3
4
5
6
7
8
NE
+Vout
OVout
CS
GND
+Vin
CTRL
Negative input
Positive input
Control input can
(can be left open)
Not fitted
No exernal connection
allowed
Positive output
Negative output
Optional external capacitor
typ. 3mA
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.
D
2
C
5
C
6
C
S
Pin 8
L
1
V
+
O
+
Pin 7 0V–
External
Cap.
www.recom-international.com
August 2002
EC 35
RECOM [ RECOM INTERNATIONAL POWER ]
