GS2TX-9
2 W LAN DC-DC CONVERTER
Type
GS2TX-9
V
in
4,5 to 15,75 V
V
out
9V
I
out
250 mA
DESCRIPTION
The GS2TX-9 is a 2.25W unregulated DC-DC con-
verter designed to provide power, voltage regula-
tion and isolation for Local Area Network
(CHEAPERNET and ETHERNET) transceivers
from a wide range of input voltage, according to
IEEE 802.3 Standard.
ELECTRICAL CHARACTERISTICS
(T
amb.
= 25擄 C unless otherwise specified)
Symbol
Vi
Iir
lir
Vo
Vor
Vor
未V
o
未V
o
Io
Vis
畏
畏
Top
Tstg
Parameter
Input Voltage
Input Reflected
Current
Input Reflected
Current
Output Voltage
Output Ripple
Voltage
Output Ripple
Voltage
Line Regulation
Load Regulation
Output Current*
Isolation Voltage
Efficiency
Efficiency
Operating Ambient
Temperature Range
Storage Temperature
Range
Vi= 5V
Vi= 12V
Io= 250mA
Io= 250mA
Vo= 9V
Vi= 5V
Vo= -9V
Test Conditions
Io= 0 to 250mA
Io = 250mA
Min
4.5
25
2
-8.55
Io= 250mA
Io= 250mA
Io= 250mA
Io= 20 to 250mA
Vo = -9V
0
2500
70
75
0
-40
73
80
+70
+85
-9.00
7
2
Typ
Max
15.75
30
5
-9.45
10
5
5
5
250
Unit
V
mApp
mApp
V
mVrms
mVrms
mV
mV
mA
Vdc
%
%
擄C
擄C
Vi = 12V
Vo = -9V Io = 250mA
Vi= 4.5 to 15.75V
Io= 0 to 250mA
Vi= 5V
Vi= 12V
Vi= 4.75 to 5.5V
Vi= 4.5 to 15.75V
Vi= 4.5 to 15.75V
*
When the input voltage is <5V and the output current is less than 20mA, the output ripple voltage increases due to discontinuous operation.
December 1993
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