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ADUM3472CRSZ Datasheet(PDF) 9 Page - Analog Devices |
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ADUM3472CRSZ Datasheet(HTML) 9 Page - Analog Devices |
9 / 32 page ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474 Rev. 0 | Page 9 of 32 ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/15 V SECONDARY ISOLATED SUPPLY 4.5 V ≤ (VDD1 = VDDA) ≤ 5.5 V; VREG = VISO = 15 V; VDD2 = 5.0 V; fSW = 500 kHz; all voltages are relative to their respective grounds; see the application schematic in Figure 39. All minimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = VDDA = 5.0 V, VREG = VISO = 15 V, VDD2 = 5.0 V. Table 4. Parameter Symbol Min Typ Max Unit Test Conditions/Comments DC-TO-DC CONVERTER POWER SUPPLY Isolated Output Voltage VISO 13.8 15 16.2 V IISO = 0 mA, VISO = VFB × (R1 + R2)/R2 Feedback Voltage Setpoint VFB 1.15 1.25 1.35 V IISO = 0 mA VDD2 Linear Regulator Regulator Voltage VDD2 4.6 5.0 5.4 V VREG = 7 V to 15 V, IDD2 = 0 mA to 50 mA Dropout Voltage VDD2DO 0.5 1.5 V IDD2 = 50 mA Line Regulation VISO (LINE) 1 10 mV/V IISO = 50 mA, VCC = 4.5 V to 5.5 V Load Regulation VISO (LOAD) 1 3 % IISO = 20 mA to 100 mA Output Ripple VISO (RIP) 200 mV p-p 20 MHz bandwidth, COUT = 0.1 μF||47 μF, IISO = 100 mA Output Noise VISO (N) 500 mV p-p 20 MHz bandwidth, COUT = 0.1 μF||47 μF, IISO = 100 mA Switching Frequency fSW 1000 kHz ROC = 50 kΩ 200 kHz ROC = 270 kΩ 192 318 515 kHz VOC = VDD2 (open loop) Switch On-Resistance RON 0.5 Ω Undervoltage Lockout, VCC,VDD2 Supplies Positive Going Threshold VUV+ 2.8 V Negative Going Threshold VUV− 2.6 V Hysteresis VUVH 0.2 V iCoupler DATA CHANNELS DC to 2 Mbps Data Rate1 Maximum Output Supply Current2 IISO (MAX) 100 mA f ≤ 1 MHz, VISO = 5.0 V Efficiency at Maximum Output Supply Current3 70 % IISO = IISO (MAX), f ≤ 1 MHz ICC Supply Current, No VISO Load ICC (Q) IISO = 0 mA, f ≤ 1 MHz ADuM3470 25 45 mA ADuM3471 27 45 mA ADuM3472 29 45 mA ADuM3473 31 45 mA ADuM3474 33 45 mA 25 Mbps Data Rate (CRWZ Grade Only) ICC Supply Current, No VISO Load ICC(D) ADuM3470 73 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM3471 83 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM3472 93 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM3473 102 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM3474 112 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz Available VISO Supply Current4 IISO (LOAD) ADuM3470 91 mA CL = 15 pF, f = 12.5 MHz ADuM3471 89 mA CL = 15 pF, f = 12.5 MHz ADuM3472 86 mA CL = 15 pF, f = 12.5 MHz ADuM3473 83 mA CL = 15 pF, f = 12.5 MHz ADuM3474 80 mA CL = 15 pF, f = 12.5 MHz ICC Supply Current, Full VISO Load ICC (MAX) 425 mA CL = 0 pF, f = 0 MHz, VDD = 5 V, IISO = 100 mA I/O Input Currents IIA, IIB, IIC, IID −20 +0.01 +20 μA Logic High Input Threshold VIH 2.0 V Logic Low Input Threshold VIL 0.8 V |
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