AP63203WU-7

AP63203WU-7 is a Diodes Incorporated synchronous step-down buck converter in TSOT-26, supplied on a 3,000-piece tape and reel (the -7 code) — a fixed 3.3 V rail from a 3.8 to 32 V input for industrial controllers, appliances and distributed point-of-load power. The selection point is the output accuracy at this size: in continuous-conduction mode the feedback reference is held to 3.27 V minimum, 3.30 V typical and 3.33 V maximum — a ±1% window on the 3.3 V rail without an external divider — and the PWM switching frequency is 1.1 MHz typical with ±6% spread-spectrum dithering, moving to pulse-frequency modulation at light load rather than holding a fixed frequency at every load, which keeps the inductor small. Quiescent current is 22 µA typical, which suits always-on rails. Selection advice: the high-side peak current limit is 2.5 A minimum, 2.8 A typical and 3.1 A maximum — the continuous output your design can draw sits below that limit at high duty cycles, and the 3.8 V input floor is a device operating range, not a promise that the 3.3 V output stays in regulation from an input below the rail — check the datasheet curves for your input-output pair before committing the rail. WU is the TSOT-26 package code; match the full code including the -7 reel suffix. No current lifecycle status was verified for this code in this review, so none is claimed here — supply is confirmed per order against the exact code. Parameters verified against the Diodes DS41326 Rev. 3-2 datasheet.