TPS54202DDCT is a Texas Instruments TPS54202 4.5 V to 28 V input, 2 A synchronous step-down converter in SOT-23-6, 250-piece small reel — integrated 148 milliohm and 78 milliohm FETs, fixed 500 kHz switching, Eco-mode for light-load efficiency, frequency spread spectrum for EMI reduction, 5 ms internal soft start, 2 microamp shutdown and 45 microamp quiescent current, −40 °C to +125 °C junction. The DDCT code is the selection point: the SOT-23-6 package on 250-piece reel — the prototype code for a 2 A rail in the smallest footprint before committing to the 3000-piece DDCR reel. Selection advice: the spread-spectrum EMI feature is the differentiator — for noise-sensitive boards (STB, DTV, white goods on 12/24 V buses), it eases the EMC pass versus fixed-frequency bucks. The synchronous FETs need no external diode; internal compensation keeps the BOM to input/output caps plus inductor and divider. Against the H-suffix version: the plain TPS54202 is the standard grade. Evidence: TI TPS54202 datasheet confirms SOT-23-6, 4.5–28 V, 2 A, 500 kHz and Eco-mode. Match the full TPS54202DDCT code.
Ordering-code highlights reviewed against official manufacturer documentation.
TPS54202 is available in the following manufacturer order codes. They share the same TPS54202 design; the table highlights package, packing and ordering differences. Quote the exact code your BOM needs.
| Order code | Package | Packing | Key difference |
|---|---|---|---|
| TPS54202DDCR | SOT-23-6 | — | — |
| TPS54202DDCT | SOT-23-THN-6 | SMALL T&R | Same SOT-23-THN-6 package as TPS54202DDCR; this difference alone does not require PCB pad changes; factory packing is SMALL T&R, 250 per pack; TPS54202DDCR is LARGE T&R, 3,000 per pack. |
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Browse existing catalog records — same series first, then the same category and manufacturer. These are not confirmed replacements; compatibility requires engineering review.
These are order-code variants of the same Texas Instruments series. They share the core design; the ordering code selects the exact configuration — TPS54202DDCR (SOT-23-6). TPS54202DDCT itself is the SOT-23-THN-6 configuration. A code that differs by even one character may be a different device, so always quote the complete code exactly as it appears on your BOM.
From the verified technical profile: Package code: SOT-23-THN (DDC); Pin count: 6; Operating temperature: -40 to 125 °C. These are the catalog-recorded values for TPS54202DDCT — always re-check them against the manufacturer datasheet revision quoted on your BOM before finalizing the design.