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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9960 датащи(PDF) 55 Page - STMicroelectronics |
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L9960 датащи(HTML) 55 Page - STMicroelectronics |
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55 / 95 page  DS11115 Rev 10 55/95 L9960, L9960T Functional description 94 Figure 24. Thermal current limitation adjustment An option (Tsecure) can be enabled via SPI and used to delay the decreasing of the Ilim_H when temperature exceeds the OTwarn. When this function is enabled if the temperature of the chip stays between OTwarn and OTsd shorter than “OTWARN_TSEC_EN”, Ilim_H is not decreased and the device continues working between dot B and C. After Tsecure if Tj is still higher than OTwarn, the Ilim_H is reduced letting the device working on B-D line. In case the option is not selected via SPI, once Otwarn thresholds is reached, the current limitation will be adjusted according to line from dot B to D. Note: (-) available in the 0 (LSB) bit position in SPI command frame 5. Note: (-) available in the 0 (LSB) bit position in SPI answer frame 7c. When OTwarn thermal threshold is reached, after a debouncing filter” T_OTwarn” the information is stored and latched in a bit called OTWARN_REG. Table 66. OTWARN_TSEC_EN Bit config Description Comment 0 OTWARN_TSEC_EN not enabled Default value 1 OTWARN_TSEC_EN enabled - OTwarn Temp Ilim B A D Ilim_range_3 Ilim_range_2 Ilim_range_1 Ilim_range_0 Tsecure OTsd Ilim_reduction_range_3 = Ilim_Tsd3 Ilim_reduction_range_2 = Ilim_Tsd2 Ilim_reduction_range_1 = Ilim_Tsd1 Ilim_reduction_range_0 = Ilim_Tsd0 C C C C D D D A A A GAPGPS02652 Table 67. OTWARN_TSEC_EN_echo Bit config Description Comment 0 Echo OTWARN_TSEC_EN not enabled Default value 1 Echo OTWARN_TSEC_EN enabled - |
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