topic Re: PCA9745B Rext range in Other NXP Products https://community.nxp.com/t5/Other-NXP-Products/PCA9745B-Rext-range/m-p/920773#M7585 <HTML><HEAD></HEAD><BODY><P>HI </P><P>There is no issue about your application!</P></BODY></HTML> Fri, 31 May 2019 01:21:05 GMT guoweisun 2019-05-31T01:21:05Z PCA9745B Rext range https://community.nxp.com/t5/Other-NXP-Products/PCA9745B-Rext-range/m-p/920772#M7584 <HTML><HEAD></HEAD><BODY><P>The datasheet explicitly mentions using Rext of 1k or 2k.<BR />Fig 9 "Maximum ILED versus Rext" shows values of 1k through 10k.<BR />Equations 4 and 5 can be used to calculate Rext.</P><P></P><P>What is the supported range for Rext over which the device will be well behaved?</P><P></P><P>More specifically I'm interested in a peak value of 2 mA which works out to a 28.7k resistor for Rext ... any issues<BR />with that configuration?</P></BODY></HTML> Wed, 29 May 2019 05:11:24 GMT https://community.nxp.com/t5/Other-NXP-Products/PCA9745B-Rext-range/m-p/920772#M7584 johnwehle 2019-05-29T05:11:24Z Re: PCA9745B Rext range https://community.nxp.com/t5/Other-NXP-Products/PCA9745B-Rext-range/m-p/920773#M7585 <HTML><HEAD></HEAD><BODY><P>HI </P><P>There is no issue about your application!</P></BODY></HTML> Fri, 31 May 2019 01:21:05 GMT https://community.nxp.com/t5/Other-NXP-Products/PCA9745B-Rext-range/m-p/920773#M7585 guoweisun 2019-05-31T01:21:05Z