The FAN5093 is a synchronous two-phase DC-DC controller IC that provides a highly accurate, reliable output voltage. The device features a 25mV step size 5-bit DAC, programmable output voltage range of 1.10V to 1.85V, and support for 100KHz to 1MHz switching frequency. The FAN5093 also integrates power good, overvoltage, undervoltage, enable/soft start, and N-channel MOSFET driver functions.
The FAN5093 is a two‑phase interleaved synchronous buck controller designed for VRM 9.x processors. It provides a programmable output voltage from 1.10 V to 1.85 V in 25 mV steps, with selectable switching frequencies between 100 kHz and 1 MHz per phase and integrated high‑current gate drivers.
The datasheet details pin assignments, electrical specifications, typical performance graphs, mechanical dimensions of the 24‑pin TSSOP package, and ordering information. It also includes absolute maximum ratings and recommended operating conditions for reliable use in high‑current applications such as Pentium IV and Athlon processors.
| Output voltage range | 1.10 V to 1.85 V (25 mV steps) |
|---|---|
| Switching frequency | 100 kHz to 1 MHz per phase |
| Package | 24‑pin TSSOP |
| Maximum load current | >50 A from 12 V source |
| Efficiency mode | E* mode at light load |
The output can be programmed from 1.10 V to 1.85 V in 25 mV steps.
It is supplied in a 24‑pin TSSOP package.
The controller allows a switching frequency from 100 kHz up to 1 MHz per phase.
The device can deliver load currents in excess of 50 A from a 12 V supply.