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SI9121 Datasheet - Vishay Siliconix

High-Voltage/ Non-Isolated Buck-Boost Converter for ISDN Digital Phones

SI9121 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 H

SI9121 General Description

The Si9121 simplifies the *48-V to +5-V or +3.3-V converter design for ISDN application by integrating the floating feedback error amplifier providing direct output voltage regulation. This approach eliminates the need for an external shunt regulator. The Si9121 also integrates a high voltag.

SI9121 Datasheet (72.42 KB)

Preview of SI9121 PDF

Datasheet Details

Part number:

SI9121

Manufacturer:

Vishay ↗ Siliconix

File Size:

72.42 KB

Description:

High-voltage/ non-isolated buck-boost converter for isdn digital phones.

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SI9121 High-Voltage Non-Isolated Buck-Boost Converter for ISDN Digital Phones Vishay Siliconix

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