I am looking to design this part in and found a discrepancy in the data sheet.
In Section 6.5 at the bottom of page 5, the parameter Voffset is said to go between a min of -7mV and a max of 7mV.
However, the graph shown in Figure 14, page 9, shows nowhere near this much voltage change over temperature.
Which value is correct? It makes a big difference on the amount of current over the span of temperature.
Hi John,
Generally, offset variation with the temperature is minimal and the variation mostly happens due to process variation from device to device. The table in page-5 might have created some confusion. Though, it is 0mV (typ) at 25C, the offset can vary between -7mV to 7mV even at room temperature due to process parameter variation.
Figure 14 shows that a typical unit has not much change in Voffset with temperature. For all calculation purposes, we have to the -7mV to 7mV for worst case analysis. Same has been used in LM5060 design calculator.
Do you have any target for over current accuracies ? can you share your specs and feature requirements.
Best Regards,
Rakesh
