Datasheet for the Richtek RT3609BE, a dual-channel PWM controller with an I2C-style digital interface, filed here under ASRock boards.

Datasheet for the FDD8780, a 542 KB PDF; the extra number in the name appears to be a document reference.

Renesas datasheet for the ISL6545A, a synchronous buck PWM controller used to generate low-voltage rails on motherboards and other boards.

Small datasheet in PDF format named only with the number 72290, which does not reveal the component or maker, so the first page must be checked to identify it.

PDF datasheet with the document code DS9045-05, a 175 KB file whose name gives no device, part number or manufacturer, so open it to see which component it covers.

Generic PDF datasheet of 326 KB whose name says nothing about the component, manufacturer or part number, so you must open it to find out what it covers.

Datasheet with a document-code style name, DSASL0022097, that does not reveal the component; it is a 333 KB PDF.

Richtek RT8120 datasheet, a 221 KB PDF. The RT8120 is a single-phase synchronous buck PWM controller, used on motherboards and graphics cards to generate rails such as…