* KOSPI falls, foreigners net sellers

* Korean won strengthens against dollar

* South Korea benchmark bond yield flat

SEOUL, Sept 12 (Reuters) - Round-up of South Korean financial markets:

** South Korean shares fell on Tuesday, dragged down by chipmakers and battery manufacturers, while investors awaited U.S. inflation data due later this week for further clues about the Federal Reserve's interest rate trajectory.

** The won strengthened, while the benchmark bond yield was little changed.

** The benchmark KOSPI fell 15.05 points, or 0.59%, to 2,541.83 by 0146 GMT, reversing its early gain of as much as 0.46%.

** "The market is broadly bearish, with battery makers falling and foreigners selling, as there is a possibility of U.S. inflation speeding up on an annual basis and pressure from oil prices," said Huh Jae-hwan, an analyst at Eugene Investment Securities.

** Chipmaker Samsung Electronics fell 0.28% and peer SK Hynix lost 0.69%.

** Battery maker LG Energy Solution slid 1.18%, its parent LG Chem fell 1.25%, while peers Samsung SDI and SK Innovation dropped 2.27% and 1.73%, respectively.

** Among other index heavyweights, automakers and online platform companies rose, but biopharmaceutical stocks fell.

** Of the total 929 traded issues, 341 shares advanced, while 510 declined.

** Foreigners were net sellers of shares worth 200.7 billion won ($151.26 million) on the main board so far on Tuesday.

** The won was quoted at 1,326.4 per dollar on the onshore settlement platform, 0.35% higher than its previous close at 1,331.1.

** In money and debt markets, September futures on three-year treasury bonds fell 0.03 point to 103.06.

** The most liquid three-year Korean treasury bond yield rose by 0.6 basis point to 3.875%, while the benchmark 10-year yield rose by 0.2 basis point to 3.972%. ($1 = 1,326.8300 won) (Reporting by Jihoon Lee and Youn Ah Moon; Editing by Subhranshu Sahu)