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STPM098C 数据表(PDF) 49 Page - STMicroelectronics |
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STPM098C 数据表(HTML) 49 Page - STMicroelectronics |
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49 / 110 page  Figure 39. Input voltage monitor timing diagram t POWERIN_P VIN_UV VIN_ON_TH T_vin_mon_detect_dly UV UV OPERATIVE VIN_UV_HYS VIN_OFF_TH VIN_adc_rise_fall_diff_sr VIN_adc_rise_fall_diff_sr T_vin_mon_detect_dly Table 39. VIN monitor electrical characteristics Symbol Parameter Test condition Min Typ Max Unit Notes VIN_MON_th_lsb VIN monitoring threshold step - 89.2 - mV Application information VIN_MON_th_range VIN monitoring threshold range 0.125 - 22.8 V Application information T_vin_mon_detect_dly VIN monitoring detection delay CLK_SSM_EN = 0 - 65 100 μs Application information 3.11.2 Input current measurement Input current is converted by an external shunt resistance (1 mΩ ±1%) into a differential voltage measured across the input pins POWERIN_P and POWERIN_N. A current sense amplifier (CSA) is used to amplify the differential voltage then converted via an internal 10-bit ADC. The digitized current information is made available on PMBus™ register READ_IIN<15:0>. Table 40. Input current ADC electrical characteristics Symbol Parameter Test condition Min Typ Max Unit Notes ADC input IIN_adc_diff_range IIN ADC voltage differential input range 0 - 50 mV - IIN_adc_cm_range IIN ADC voltage common mode input range 4.5 - 20 V - IIN_adc_ic IIN ADC input current POWERIN_N = 20 V VCC = 5 V 5 - 45 uA - IIN_adc_ilkg IIN ADC input leakage POWERIN_N = 20 V VCC = 0 V - - 200 nA - ADC input resolution IIN_adc_resolution IIN ADC resolution - 10 - bits Application information STPM098C Functional description DS14440 - Rev 1 page 49/110 |
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