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 ...