Datasheet ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474 (Analog Devices) - 7

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Data Sheet ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474 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 1.125 1.25 1.375 V IISO = 0 mA Line Regulation VISO (LINE) 1 10 mV/V IISO = 50 mA, VDD1 = 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 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) 400 mA VISO = 3.3 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 9 30 mA ADuM3471 9 30 mA ADuM3472 10 30 mA ADuM3473 10 30 mA ADuM3474 10 30 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 33 mA ADuM3471 33 mA ADuM3472 33 mA ADuM3473 33 mA ADuM3474 33 mA Available VISO Supply Current4 IISO (LOAD) CL = 15 pF, f = 12.5 MHz ADuM3470 393 mA ADuM3471 392 mA ADuM3472 390 mA ADuM3473 389 mA ADuM3474 388 mA IDD1 Supply Current, Full VISO Load IDD1 (MAX) 375 mA CL = 0 pF, f = 0 MHz, VDD1 = 5 V, IISO = 400 mA I/O Input Currents IIA, IIB, IIC, IID −20 +0.01 +20 µA Rev. B | Page 7 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