SC1144 - Semtech Corporation

SC1144 PROGRAMMABLE/ HIGH PERFORMANCE MULTI-PHASE/ PWM CONTROLLER

The SC1144 is a high performance, multi-phase (PWM) controller designed for high power microprocessors requiring ultra fast transient response, such as ® the Pentium ll and beyond. Utilizing a novel and unique design, the controller distributes the output load across (up to) four converter channels by digitally phase shifting the PWM outputs. This approach g.

Features

under-voltage lock-out with hysteresis and overcurrent protection. FEATURES
• Allows use of small surface mount components
• Ultra fast transient recovery time
• Wide, High frequency operating range
• Selectable 2, 3, 4 phase operation
• Floating feedback ground for remote sensing
• Precision load current sharing
• Selectable internal or external clock
• Soft start, Over current protection
• 5-bit DAC programmable output
• programmable clock, 200Khz-2Mhz per phase APPLICATIONS
• High end servers and workstations
• High current/Ultra-fast transient microprocessors
• Voltage Regulator Modules O.