GS2T5-9
2 W LAN DC-DC CONVERTER
Type
GS2T5-9
V
in
5V
V
out
9V
I
out
250 mA
DESCRIPTION
The GS2T5-9 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 standard 5V input voltage, according to IEEE
802.3 Standard.
ELECTRICAL CHARACTERISTICS
(T
amb.
= 25擄 C unless otherwise specified)
Symbol
Vi
Iir
Vo
Vor
未V
o
未V
o
Io
Vis
畏
Top
Tstg
Parameter
Input Voltage
Input Reflected
Current
Output Voltage
Output Ripple Voltage
Line Regulation
Load Regulation
Output Current*
Isolation Voltage
Efficiency
Operating
Temperature Range
Storage Temperature
Range
Vi= 5V
Io= 250mA
Vo= -9V
Vi= 5V
Vo = -9V
Vi= 4.5 to 5.5V
Vi= 5V
Vi = 4.5 to 5.5
Vi = 5V
Vi = 4.5 to 5.5V
Test Conditions
Io= 0 to 250mA
Io = 250mA
Io= 0 to 250mA
Io = 250mA
Io = 250mA
Io = 20 to 250mA
Vo = -9V
0
2500
70
0
-40
73
+70
+85
-8.55
-9.00
7
-9.45
10
5
5
250
V
mVrms
mV
mV
mA
Vdc
%
擄C
擄C
Min
4.5
Typ
5
25
Max
5.5
30
Unit
V
mApp
*
Note: when output current is less than 20mA, the output ripple voltage increases due to discontinuous operation.
December 1993
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