COSINE Tier-1 distributor Jarwey｜COS29752WU full-load dropout typical is 300 mV

Jarwey is a Tier-1 distributor of COSINE — selection support, datasheets, samples, small batches, and lead time.

Budget full-load dropout from the electrical table, one current row at a time. The PDF on the COS29752WU page is family datasheet Rev1.3 (cover title COS2915X/2930X/2950X/2975X). The general description and section 3 both print a full-load typical dropout of 350 mV to 425 mV. Section 2.4 defines dropout as a 1% output drop (ΔVOUT = −1%) and then splits the number by current. The 7.5 A row is labeled COS2975x, IOUT = 7.5A, typical 300 mV, and the max cell is empty.

300 mV sits under the 350 mV floor of that sentence. The 1.5 A full-load typical is 310 mV. The 3 A and 5 A full-load typicals are 370 mV. Only 370 mV lands inside 350–425 mV. Headroom follows the matching 2.4 row.

The Vin-window note, the 1.5/3/5/7.5 A current ladder, and the MIC29302 / MIC29752 checklists already exist. This note is only the full-load dropout row. The table header is TJ = +25°C unless a row says otherwise. The dropout rows change IOUT. They leave the junction temperature on the header.

One sentence, four full-load rows

Lighter-current rows stay on their own lines. COS2915x at IOUT = 100 mA is 80 mV typical and 200 mV max. That row does not size a 1.5 A headroom. The 250 mA, 750 mA, 2.5 A, and 4 A rows stay in the table as well.

What the product pages print

COS29152WU, COS29302, and COS29502WU print Vin, Iout, and a 1.24 V adjustable feedback on the function line. They do not print dropout, and they do not host a PDF. The page line is “请联络索取规格书” — request the datasheet from Jarwey. The COS29752WU function paragraph talks about an intermediate bus and digital monitoring. It does not print 7.5 A or 300 mV. The 300 mV figure is in section 2.4 of the PDF on that page. The COS29302 page omits the letters WU in the model string. The package field is still TO-263-5, and the order code in the PDF is COS29302WU.

Checklist before freeze

1. Use section 2.4. Dropout there means a 1% drop in VOUT. Keep the 350–425 mV sentence in the general description and in section 3, and size headroom from the row above.
2. Match the prefix. COS29152 to the COS2915x 1.5 A row; COS29302WU to the COS2930x 3 A row; COS29502 to the COS2950x 5 A row; COS29752 to the COS2975x 7.5 A row.
3. Max cells. The 1.5 A, 3 A, and 5 A full-load rows print 600 mV max. The 7.5 A max cell is blank. Ask Jarwey to confirm the current PDF revision before freezing that headroom.
4. Temperature. These typicals sit under the +25°C header. Hot headroom needs its own rise calculation.
5. Lighter rows. Leave 100 mA, 250 mA, 750 mA, and 4 A on their own lines.
6. Pages. Dropout is absent from the function lines on 983, 981, and 982, and from the function paragraph on 863. The figures live in the Rev1.3 PDF.
7. Anchors. MIC29152, MIC29302, MIC29502, and MIC29752WWT are evaluation anchors. Confirm on the board before the BOM is frozen. Datasheets for 983, 981, and 982: contact Jarwey. For 863, use the PDF on the page and check the revision.

Datasheet and contact

• COS29152WU · COS29302 · COS29502WU · COS29752WU
• Family PDF: COS29752WU.pdf (on page 863, Rev1.3)

Send Jarwey the output voltage, the full-load current, and the lowest input. We can read the matching 2.4 row with you and line up samples and a small-batch date: kerry.w@jarwey.cn · Contact.

Jarwey · COSINE Tier-1 distributor · datasheets, selection, samples, and lead time.