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FAN5093MTCXFSCN/a12774avaiTwo Phase Interleaved Synchronous Buck Converter
FAN5093MTCFAIRCHILD ?N/a98avaiTwo Phase Interleaved Synchronous Buck Converter


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FAN5093MTC-FAN5093MTCX
Two Phase Interleaved Synchronous Buck Converter

Features
Programmable output from 1.10V to 1.85V in 25mV steps
using an integrated 5-bit DAC
•Two interleaved synchronous phases for maximum
performance 100nsec transient response time Built-in current sharing between phases Remote sense Programmable Active Droop
(Voltage Positioning) Programmable switching frequency from 100KHz to
1MHz per phase Adaptive delay gate switching Integrated high-current gate drivers Integrated Power Good, OV , UV, 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
Applications

•Power supply for Pentium
IV
•Power supply for Athlon VRM for Pentium IV processor Programmable step-down power supply
Description

The FAN5093 is a synchronous two-phase DC-DC controller
IC which provides a highly accurate, programmable output
voltage for VRM 9.x processors. Two interleaved synchro-
nous 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 components.
The FAN5093 features Programmable Active Droop
for
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 FAN5093 uses a 5-bit D/A converter to program the
output voltage from 1.10V to 1.85V in 25mV steps with an
accuracy of 1%. The FAN5093 uses a high level of integra-
tion to deliver load currents in excess of 50A from a 12V
source with minimal external circuitry.
The FAN5093 also offers integrated functions including
Power Good, Output Enable/Soft Start, under-voltage lock-
out, over-voltage protection, and adjustable current limiting
with independent current sense on each phase. It is available
in a 24 pin TSSOP package.
ic,good price


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