Datasheet ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474 (Analog Devices) - 9

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Data Sheet ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474 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 13.5 15 16.5 V IISO = 0 mA, VISO = VFB × (R1 + R2)/R2 Feedback Voltage Setpoint VFB 1.125 1.25 1.375 V IISO = 0 mA VDD2 Linear Regulator Regulator Voltage VDD2 4.6 5.0 5.7 V VREG = 7 V to 15 V, IDD2 = 0 mA to 50 mA Dropout Voltage VDD2 (DO) 0.5 1.5 V IDD2 = 50 mA Line Regulation VISO (LINE) 1 20 mV/V IISO = 50 mA, VDD1 = 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, VDD1, VDD2 Supplies Positive Going Threshold VUV+ 2.8 V Negative Going Threshold VUV− 2.6 V Hysteresis VUVH 0.2 V DC to 2 Mbps Data Rate1 f ≤ 1 MHz Maximum Output Supply Current2 IISO (MAX) 100 mA VISO = 5.0 V Efficiency at Maximum Output 70 % IISO = IISO (MAX) Supply Current3 iCOUPLER DATA CHANNELS DC to 2 Mbps Data Rate1 IDD1 Supply Current, No VISO Load IDD1 (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 (C Grade Only) IDD1 Supply Current, No VISO Load IDD1 (D) IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM3470 73 mA ADuM3471 83 mA ADuM3472 93 mA ADuM3473 102 mA ADuM3474 112 mA Available VISO Supply Current4 IISO (LOAD) CL = 15 pF, f = 12.5 MHz ADuM3470 91 mA ADuM3471 89 mA ADuM3472 86 mA ADuM3473 83 mA ADuM3474 80 mA IDD1 Supply Current, Full VISO Load IDD1 (MAX) 425 mA CL = 0 pF, f = 0 MHz, VDD1 = 5 V, IISO = 100 mA Rev. B | Page 9 of 36 Document Outline Features Applications General Description Functional Block Diagrams Table of Contents Revision History Specifications Electrical Characterstics—5 V Primary Input Supply/5 V Secondary Isolated Supply Electrical Characteristics—3.3 V Primary Input Supply/3.3 V Secondary Isolated Supply Electrical Characteristics—5 V Primary Input Supply/3.3 V Secondary Isolated Supply Electrical Characteristics—5 V Primary Input Supply/15 V Secondary Isolated Supply Package Characteristics Regulatory Approvals Insulation and Safety-Related Specifications DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation Characteristics Recommended Operating Conditions Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Terminology Applications Information Application Schematics Transformer Design Transformer Turns Ratio Transformer ET Constant Transformer Primary Inductance and Resistance Transformer Isolation Voltage Switching Frequency Transient Response Component Selection Printed Circuit Board (PCB) Layout Thermal Analysis Propagation Delay-Related Parameters DC Correctness and Magnetic Field Immunity Power Consumption Power Considerations Soft Start Mode and Current-Limit Protection Data Channel Power Cycle Insulation Lifetime Outline Dimensions Ordering Guide Automotive Products