SC1154(2000) Datasheet PDF - Semtech Corporation

DESCRIPTION
The SC1154 is a synchronous-buck switch-mode controller designed for use in single ended power supply applications where efficiency is the primary concern. The controller is a hysteretic type, with a user selectable hysteresis. The SC1154 is ideal for implementing DC/DC converters needed to power advanced microprocessors such as Pentium® ll, in both single and multiple processor configurations. Inhibit, undervoltage lockout and soft-start functions are included for controlled power-up.

FEATURES
• Programmable hysteresis
• 5 bit DAC programmable output (1.3V-3.5V)
• On-chip power good and OVP functions
• Designed to meet latest Intel specifications
• Up to 95% efficiency
• +1% tolerance over temperature

APPLICATIONS
• Server Systems and Workstations
• Pentium® II Core Supply
• Multiple Microprocessor Supplies
• Voltage Regulator Modules