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SI9105DN02-E3 Fiches technique(PDF) 1 Page - Vishay Siliconix

No de pièce SI9105DN02-E3
Description  1-W High-Voltage Switchmode Regulator
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Fabricant  VISHAY [Vishay Siliconix]
Site Internet  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI9105DN02-E3 Fiches technique(HTML) 1 Page - Vishay Siliconix

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Vishay Siliconix
Si9105
Document Number: 70003
S-70497-Rev. I, 19-Mar-07
www.vishay.com
1
1-W High-Voltage Switchmode Regulator
FEATURES
CCITT Compatible
Current-Mode Control
Low Power Consumption (less than 5 mW)
10 to 120 V Input Range
200 V, 250 mA MOSFET
Internal Start-Up Circuit
Current-Mode Control
SHUTDOWN and RESET
DESCRIPTION
The Si9105 high-voltage switchmode regulator is a mono-
lithic BiC/DMOS integrated circuit which contains most of the
components necessary to implement a high-efficiency dc/dc
converter in ISDN terminals up to 3 watts. A 0.5 mA max
supply current makes possible the design of a dc/dc con-
verter with 60 % efficiency at 25 mW, therefore meeting the
recommended performance under the CCITT I.430 specifi-
cations.
This device may be used with an appropriate transformer to
implement isolated flyback power converter topologies to
provide single or multiple regulated dc outputs (i.e., ± 5 V).
The Si9105 is available in both standard and lead (Pb)-free
16-pin wide-body SOIC, 14-pin plastic DIP and 20-pin PLCC
packages which are specified to operate over the industrial
temperature range of - 40 °C to 85 °C.
FUNCTIONAL BLOCK DIAGRAM
+
-
-
+
+
-
+
-
+
-
FB
COMP
DISCHARGE
OSC
2 V
Ref
Gen
R
S
Q
R
S
Q
DRAIN
SOURCE
Current-Mode
Comparator
C/L
1.2 V
Undervoltage Comparator
RESET
8.7 V
9.3 V
BIAS
Current
Sources
To
Internal
Circuits
Comparator
Error
Amplifier
VREF
VCC
+VIN
VCC
SHUTDOWN
4 V (1 %)
Clock (½ fOSC)
OSC
OUT
OSC
IN
-VIN
(BODY)


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