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LP3966ESX-2.5 Datasheet(PDF) 11 Page - National Semiconductor (TI) |
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LP3966ESX-2.5 Datasheet(HTML) 11 Page - National Semiconductor (TI) |
11 / 14 page Applications Information (Continued) Sense Pin In applications where the regulator output is not very close to the load, LP3966 can provide better remote load regulation using the SENSE pin. Figure 2 depicts the advantage of the SENSE option. LP3963 regulates the voltage at the output pin. Hence, the voltage at the remote load will be the regula- tor output voltage minus the drop across the trace resis- tance. For example, in the case of a 3.3V output, if the trace resistance is 100m Ω, the voltage at the remote load will be 3V with 3A of load current, I LOAD. The LP3966 regulates the voltage at the sense pin. Connecting the sense pin to the re- mote load will provide regulation at the remote load, as shown in Figure 2. If the sense option pin is not required, the sense pin must be connected to the V OUT pin. DS101267-7 FIGURE 1. Error Flag Operation DS101267-8 FIGURE 2. Improving remote load regulation using LP3966 www.national.com 11 |
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