SI9108 Datasheet, PDF (1/5 Pages) Vishay Siliconix – 1-W High-Voltage Switchmode Regulator

New Product
Si9108
Vishay Siliconix
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
• SHUTDOWN and RESET
• Maximum Duty Cycle of 99.9%
DESCRIPTION
The Si9108 high-voltage switchmode regulator is a monolithic
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 converter
with 60% efficiency at 25 mW, therefore meeting the
recommended performance under the CCITT I.430
specifications.
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 Si9108 is available in 16-pin wide-body SOIC, 14-pin
plastic DIP, and 20-pin PLCC packages, and is specified over
the industrial, D suffix (-40 to 85°C) temperature range.
FUNCTIONAL BLOCK DIAGRAM
FaxBack 408-970-5600, request 70883
www.siliconix.com
S-62188—Rev. A, 05-Apr-99
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