The FAN5026 PWM controller is a highly flexible dual synchronous switching controller with features such as DDR mode and dual independent regulators. It is designed for generating DDR VDDQ and VTT voltages and is suitable for applications such as desktop computers and graphics cards.
The FAN5026 is a highly flexible dual synchronous switching PWM controller that supports DDR‑II and HSTL memory power solutions. It provides two independent regulated outputs adjustable from 0.9 V to 5.5 V, with options for DDR mode, phase‑shifted operation, and lossless current sensing. Typical applications include desktop computers, graphics cards, set‑top boxes and other high‑performance systems.
The document includes pin configurations, absolute maximum ratings, recommended operating conditions, electrical specifications such as supply voltage range 3 V‑16 V, oscillator frequency 255‑345 kHz, and internal reference voltage 0.891‑0.909 V. Mechanical dimensions for the TSSOP‑28 package and a bill of materials for typical designs are also provided.
| Supply Voltage (VCC) – Recommended | 4.75 V to 5.25 V |
|---|---|
| Input Voltage Range | 3 V to 16 V |
| Output Voltage Range | 0.9 V to 5.5 V |
| Oscillator Frequency | 255 kHz to 345 kHz |
| Internal Reference Voltage | 0.891 V to 0.909 V |
| Package | TSSOP‑28 |
The controller operates with an input voltage from 3 V up to 16 V.
It provides two independent output regulators that can be configured for DDR mode or independent operation.
The device is supplied in a 28‑lead TSSOP package.
Yes, it generates separate PGx (power‑good) signals when each output is within ±10 % of its set point.