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GS2TX-9A 数据表(PDF) 1 Page - STMicroelectronics

部件名 GS2TX-9A
功能描述  2 W LAN DC-DC CONVERTER
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

GS2TX-9A 数据表(HTML) 1 Page - STMicroelectronics

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GS2TX-9A
2 W LAN DC-DC CONVERTER
April 1997
1/2
Type
Vi
Vo
Io
GS2TX-9A
4,5 to 15,75 V
– 9 V
– 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 (Tamb.= 25
° C unless otherwise specified)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
Vi
Input Voltage
Vo = 9V
Io = 0 to – 250mA
4.5
15.75
V
Iir
Input Reflected
Current
Vi = 5V
Vo = – 9V
Io = – 250mA
25
30
mApp
lir
Input Reflected
Current
Vi = 12V
Vo = – 9V
Io = – 250mA
2
5
mApp
Vo
Output Voltage
Vi = 4.5 to 15.75V
Io = 0 to – 250mA
– 8.55
– 9.00
– 9.45
V
Vor
Output Ripple
Voltage
Vi = 5V
Io = – 250mA
710
mVRMS
Vor
Output Ripple
Voltage
Vi = 12V
Io = – 250mA
25
mVRMS
δVOL
Line Regulation
Vi = 4.5 to 5.5V
Io = – 250mA
5mV
δVOO
Load Regulation
Vi = 4.5 to 15.75V
Io = – 20 to – 250mA
5mV
Io
Output Current*
Vi = 4.5 to 15.75V
Vo = – 9V
0
– 250
mA
Vis
Isolation Voltage
2500
VDC
η
Efficiency
Vi = 5V
Io = – 250mA
70
73
%
η
Efficiency
Vi = 12V
Io = – 250mA
75
80
%
Top
Operating Ambient
Temperature Range
0
+70
°C
Tstg
Storage Temperature
Range
– 40
+85
°C
* When the input voltage is <5V and the output current is less than 20mA, the output ripple voltage increases due to discontinuous operation.


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