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L9945 データシート(PDF) 17 Page - STMicroelectronics |
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L9945 データシート(HTML) 17 Page - STMicroelectronics |
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17 / 144 page  Figure 10. Thermal impedance diagram GADG2702170740PS 25 20 15 10 5 1.0E-05 1.0E-03 1.0E-01 Time (s) 1.0E+01 1.0E+03 4.4.1 Temperature ADC An internal ADC monitors the junction temperature. Measure is available reading Temp_ADC[x] bit and applying the following conversion law: Eq. (1): Junction temperature conversion law Tj= 0.28×CODE −65 (1) The table below reports the electrical characteristics for the temperature ADC. Note: VVPS_UV < VVPS < 60 V, all supplies are independent; 4.5 V < VDD5 < 5.5 V; 3.0 V < VIO < 5.5 V, unless otherwise noted. Table 6. Temperature ADC electrical characteristics Symbol Parameter Test condition Min. Typ. Max. Unit ADC_res Resolution - - 10 - bit fADC Conversion rate - - 62.5 - kHz Tj_ADC_in Temperature range - -40 - 190 °C T_ACC Temp accuracy From -40 °C to 190 °C -10 - 10 °C L9945 Product electrical and thermal characteristics DS12275 - Rev 10 page 17/144 |
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