SGS Thomson Microelectronics GS2TX-9A Datasheet
GS2TX-9A
2 W LAN DC-DC CONVERTER
Type V
GS2TX-9A 4,5 to 15,75 V – 9 V – 250 mA
i
V
o
I
o
DESCRIPTION
The GS2TX-9A is a 2.25W unregulated DC-DC
converter designed to provide power, voltage regulation and isolation for Local Area Network
(CHEAPERNET and ETHERNET) transceivers
from a wide range o f input vol tage, according to
IEEE 802.3 Standard.
An internal network is added to guarantee soft start
at switch-on.
ELECTRICAL CHARACTERISTICS (T
Symbol Parameter Test C o nditions Min Typ Max Unit
Input Voltag e Vo = 9V Io = 0 to – 250mA
V
i
I
ir
l
ir
V
o
V
or
V
or
δV
OL
δV
OO
I
o
V
is
η
η
T
op
T
stg
Input Reflected
Current
Input Reflected
Current
Output Volta ge Vi = 4.5 to 15.75V
Output Ripple
Voltage
Output Ripple
Voltage
Line Regulation Vi = 4.5 to 5.5V Io = – 250mA
Load Regulation Vi = 4.5 to 15.75V Io = – 20 to – 250mA
Output Current* Vi = 4.5 to 15.75V Vo = – 9V
Isolation Voltage
Efficiency V
Efficiency Vi = 12V Io = – 250mA
Operating Ambient
Temperature Range
Storage Temperature
Range
Vi = 5V
Vo = – 9V Io = – 250mA
Vi = 12V
Vo = – 9V Io = – 250mA
Io = 0 to – 250mA
Vi = 5V Io = – 250mA
Vi = 12V Io = – 250mA
= 25° C unless otherwise specified)
amb.
= 5V Io = – 250mA
i
4.5 15.75 V
25 30 mApp
2 5 mApp
– 8.55 – 9.00 – 9.45 V
5mV
5mV
0 – 250mA
2500 V
70 73 %
75 80 %
0
– 40
710mV
25mV
+70 °C
+85 °C
RMS
RMS
DC
* 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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GS2TX-9A
CONNECTION DIAGRAM AND MECHANICAL DATA
33 (1.30)
Bottom view
5.08 (0.20)
1
2
Pin configuration:
1 + Vin
2 - Vin
3 NC
4 + Vout
5 - Vout
20.32
(0.80)
11.5
(0.453)
4.5
(0.177)
3
4
20.32
(0.80)
33 (1.30)
5
1 (0.08)
Φ
12.7
(0.50)
Package A. Dimensions in mm (inches).
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectroni cs products are not authorized for use as critical components in life sup port devices or systems without express
written approval of SGS-THOMSON Microelectronics.
© 1997 SGS-THOMSON Microelectronics – All Rights Reserved
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SGS-THOMSON Microelectronics GROUP OF COMPANIES
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