FAN5193 Datasheet | Fairchild Semiconductor

Features - Programmable output from 1.10V to 1.85V in 25m V steps using an integrated 5-bit DAC - Two interleaved synchronous phases for maximum performance - 100nsec response time - Built-in current sharing between phases - Remote sense - Programmable Active Droop (Voltage Positioning) - Programmable frequency from 200KHz to 2MHz - Adaptive delay gate switching - Integrated high-current gate drivers - Integrated Power Good, OV, UVLO, Enable/Soft Start functions - Drives N-channel MOSFETs - Operation optimized for 12V operation - High efficiency mode (E- ) at light load - Overcurrent protection using MOSFET sensing - 24 pin TSSOP package Description The FAN5193 is a synchronous multi-phase DC-DC controller IC which provides a highly accurate, programmable output voltage for all high-performance processors. Two interleaved synchronous buck regulator phases with built-in current sharing operate 180° out of phase to provide the fast transient response needed to satisfy high current applications while minimizing external ponents. The FAN5193 features remote voltage sensing and Programmable Active Droop for 100nsec converter transient response with minimum output capacitance. It has integrated high-current gate drivers, with adaptive delay gate switching, eliminating the need for external drive devices. The FAN5193 uses a 5-bit D/ A converter to program the output voltage from 1.10V to 1.85V in 25m V steps with an accuracy of 0.5%. The FAN5193 uses a high level of integration to deliver load currents in excess of 50A from a 12V source with minimal external circuitry. The FAN5193 also offers integrated functions including Power Good, Output Enable/Soft Start, under-voltage lockout, over-voltage protection, and adjustable current limiting with independent current sense on each phase. It is available in a 24 pin TSSOP package. Applications - - - - Power supply for Pentium IV Power supply for Athlon VRM for Pentium IV processor Programmable step-down power supply Block...