GS2TX-9A
2 W LAN DC-DC CONVERTER
Type
GS2TX-9A
V
i
4,5 to 15,75 V
V
o
鈥?V
I
o
鈥?250 mA
DESCRIPTION
The GS2TX-9A is a 2.25W unregulated DC-DC
converter designed to provide power, voltage regu-
lation and isolation for Local Area Network
(CHEAPERNET and ETHERNET) transceivers
from a wide range of input voltage, according to
IEEE 802.3 Standard.
An internal network is added to guarantee soft start
at switch-on.
ELECTRICAL CHARACTERISTICS
(T
amb.
= 25擄 C unless otherwise specified)
Symbol
Vi
Iir
lir
Vo
Vor
Vor
未V
OL
未V
OO
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 = 鈥?250mA
Io = 鈥?250mA
Vo = 9V
Vi = 5V
Vo = 鈥?9V
Vi = 12V
Vo = 鈥?9V
Vi = 4.5 to 15.75V
Io = 0 to 鈥?250mA
Vi = 5V
Vi = 12V
Vi = 4.5 to 5.5V
Vi = 4.5 to 15.75V
Vi = 4.5 to 15.75V
Io = 鈥?250mA
Io = 鈥?250mA
Io = 鈥?250mA
Io = 鈥?20 to 鈥?250mA
Vo = 鈥?9V
0
2500
70
75
0
鈥?40
73
80
+70
+85
Test Conditions
Io = 0 to 鈥?250mA
Io = 鈥?250mA
Io = 鈥?250mA
鈥?8.55
2
鈥?9.00
7
2
5
鈥?9.45
10
5
5
5
鈥?250
mApp
V
mV
RMS
mV
RMS
mV
mV
mA
V
DC
%
%
擄C
擄C
Min
4.5
25
Typ
Max
15.75
30
Unit
V
mApp
*
When the input voltage is <5V and the output current is less than 20mA, the output ripple voltage increases due to discontinuous operation.
April 1997
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