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ADUM3470 Datasheet(PDF) 7 Page - Analog Devices |
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ADUM3470 Datasheet(HTML) 7 Page - Analog Devices |
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7 / 32 page  ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474 Rev. 0 | Page 7 of 32 ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY 4.5 V ≤ (VDD1 = VDDA) ≤ 5.5 V; VDD2 = VREG = VISO = 3.3 V; fSW = 500 kHz; all voltages are relative to their respective grounds; see the application schematic in Figure 38. 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, VDD2 = VREG = VISO = 3.3 V. Table 3. Parameter Symbol Min Typ Max Unit Test Conditions/Comments DC-TO-DC CONVERTER POWER SUPPLY Isolated Output Voltage VISO 3.0 3.3 3.6 V IISO = 0 mA, VISO = VFB × (R1 + R2)/R2 Feedback Voltage Setpoint VFB 1.15 1.25 1.35 V IISO = 0 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 2 % IISO = 50 mA to 200 mA Output Ripple VISO (RIP) 50 mV p-p 20 MHz bandwidth, COUT = 0.1 μF||47 μF, IISO = 100 mA Output Noise VISO (N) 100 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 209 318 515 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) 400 mA f ≤ 1 MHz, VISO = 3.3 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 9 30 mA ADuM3471 9 30 mA ADuM3472 10 30 mA ADuM3473 10 30 mA ADuM3474 10 30 mA 25 Mbps Data Rate (CRWZ Grade Only) ICC Supply Current, No VISO Load ICC (D) ADuM3470 33 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM3471 33 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM3472 33 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM3473 33 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM3474 33 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz Available VISO Supply Current4 IISO (LOAD) ADuM3470 393 mA CL = 15 pF, f = 12.5 MHz ADuM3471 392 mA CL = 15 pF, f = 12.5 MHz ADuM3472 390 mA CL = 15 pF, f = 12.5 MHz ADuM3473 389 mA CL = 15 pF, f = 12.5 MHz ADuM3474 388 mA CL = 15 pF, f = 12.5 MHz ICC Supply Current, Full VISO Load ICC (MAX) 375 mA CL = 0 pF, f = 0 MHz, VDD = 5 V, IISO = 400 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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