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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC2972 датащи(PDF) 5 Page - Linear Technology |
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LTC2972 датащи(HTML) 5 Page - Linear Technology |
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5 / 112 page  LTC2972 5 2972fa For more information www.linear.com/LTC2972 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. VPWR = VIN_SNS = 12V, VDD33 = VDDIO, VDD33, VDD25, REFP and REFM pins floating, unless otherwise indicated. CVDD33 = 100nF, CVDD25 = 100nF, CVIN_SNS_CAP = 10nF and CREF = 100nF. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply Characteristics VPWR VPWR Supply Input Operating Range VDD33 Floating l 4.5 15 V IPWR VPWR Supply Current 4.5V ≤ VPWR ≤ 15V, VDD33 Floating l 6.7 9 mA IVDD33 VDD33 Supply Current 3.13V ≤ VDD33 ≤ 3.47V, VPWR = VDD33 l 6.7 9 mA VUVLO_VDD33 VDD33 Undervoltage Lockout VDD33 Ramping Up, VPWR = VDD33 l 2.25 2.55 2.8 V VDD33 Undervoltage Lockout Hysteresis 120 mV VDD33 Supply Input Operating Range VPWR = VDD33 l 3.13 3.47 V Regulator Output Voltage 4.5V ≤ VPWR ≤ 15V l 3.13 3.26 3.47 V Regulator Output Short-Circuit Current VPWR = 4.5V, VDD33 = 0V l 75 90 140 mA VDD25 Regulator Output Voltage 3.13V ≤ VDD33 ≤ 3.47V l 2.35 2.5 2.6 V Regulator Output Short-Circuit Current VPWR = VDD33 = 3.47V, VDD25 = 0V l 30 55 80 mA tINIT Initialization Time Time from VIN applied until the TON_DELAY Timer Starts 30 ms VDDIO VDDIO Input Operating Range l 1.62 3.6 V RIN VDDIO Input Resistance 0 ≤ VVDDIO ≤ 3.6V l 53 68.8 86 kΩ Voltage Reference Characteristics VREF Output Voltage (Note 3) VREF = VREFP – VREFM, 0 < IREFP < 100µA l 1.216 1.228 1.240 V Temperature Coefficient 3 ppm/°C Hysteresis (Note 4) 100 ppm ADC Characteristics VIN_ADC Voltage Sense Input Range Differential Voltage: VIN_ADC = (VSENSEPn – VSENSEMn) l 0 6 V Single-Ended Voltage: VSENSEMn l –0.1 0.1 V Current Sense Input Range Single-Ended Voltage: ISENSEPn, ISENSEMn l –0.1 6 V Differential Current Sense Voltage: VIN_ADC = (ISENSEPn – ISENSEMn) Mfr_config_imon_sel = 0 Mfr_config_imon_sel = 1 l l –170 –0.1 170 6 mV V N_ADC Voltage Sense Resolution 0V ≤ VIN_ADC ≤ 6V, READ_VOUT 122 µV/LSB Current Sense Resolution with IOUT_CAL_GAIN = 1Ω 0mV ≤ |VIN_ADC| < 16mV (Note 5) 16mV ≤ |VIN_ADC| < 32mV 32mV ≤ |VIN_ADC| < 63.9mV 63.9mV ≤ |VIN_ADC| < 127.9mV 127.9mV ≤ |VIN_ADC| 15.625 31.25 62.5 125 250 µA/LSB µA/LSB µA/LSB µA/LSB µA/LSB TUE_ADC_ VOLT_SNS Total Unadjusted Error (Note 3) Voltage Sense Inputs VIN_ADC ≥ 1V l ±0.25 % of Reading Voltage Sense Inputs 0 ≤ VIN_ADC ≤ 1V l ±2.5 mV |
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