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SI9121

Part Number	SI9121
Manufacturer	Vishay Siliconix
Description	High-Voltage/ Non-Isolated Buck-Boost Converter for ISDN Digital Phones
Published	Apr 8, 2005
Detailed Description	Si9121 New Product Vishay Siliconix High-Voltage, Non-Isolated Buck-Boost Converter for ISDN Digital Phones FEATURES D...
Datasheet	SI9121 PDF File

Overview

Si9121 New Product Vishay Siliconix High-Voltage, Non-Isolated Buck-Boost Converter for ISDN Digital Phones FEATURES D Fixed +5-V or +3.
3-V Output D Integrated Floating Feedback Amplifier D On-Chip 70-V, 1.
5-W N-Channel MOSFET Switch D Integrated High Voltage Start-Up Circuit, with VCC Regulator D D D D D –10-V to –60-V Input Voltage Range 95-kHz PWM Operation Integrated Soft-Start and Oscillator High Efficiency Over Full Load Range Under Voltage Lockout D Current Mode Control D Hiccup Mode Short Circuit Protection D Thermal Shutdown D SOIC-8 Narrow-Body Package DESCRIPTION The Si9121 simplifies the –48-V to +5-V or +3.
3-V converter design for ISDN application by integrating the floating ...

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