Datasheet ADuM4470, ADuM4471, ADuM4472, ADuM4473, ADuM4474 (Analog Devices) - 6

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ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474 Data Sheet ELECTRICAL CHARACTERISTICS—3.3 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY
3.0 V ≤ VDD1 = VDDA ≤ 3.6 V; VDD2 = VREG = VISO = 3.3 V; fSW = 500 kHz; all voltages are relative to their respective grounds; see the application schematic in Figure 48. Al minimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = VDDA = 3.3 V, VDD2 = VREG = VISO = 3.3 V.
Table 2. DC-to-DC Converter Static Specifications Parameter Symbol Min Typ Max Unit Test Conditions/Comments
DC-TO-DC CONVERTER 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 1.37 V IISO = 0 mA Line Regulation VISO (LINE) 1 10 mV/V IISO = 50 mA, V 1 2 DD1 = VDDA = 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 (NOISE) 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 0.6 Ω Undervoltage Lockout, VDDA, 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 Rate3 Maximum Output Supply Current4 IISO (MAX) 250 mA f ≤ 1 MHz, VISO = 5.0 V Efficiency at Maximum Output Current5 68 % IISO = IISO (MAX), f ≤ 1 MHz iCoupler DATA CHANNELS DC to 2 Mbps Data Rate IDD1 Supply Current, No VISO Load IDD1 (Q) IISO = 0 mA, f ≤ 1MHz ADuM4470 9 20 mA ADuM4471 10 20 mA ADuM4472 11 20 mA ADuM4473 11 20 mA ADuM4474 12 20 mA 25 Mbps Data Rate (CRIZ Grade Only) IDD1 Supply Current, No VISO Load IDD1 (D) ADuM4470 28 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM4471 29 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM4472 31 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM4473 32 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz ADuM4474 34 mA IISO = 0 mA, CL = 15 pF, f = 12.5 MHz Available VISO Supply Current6 IISO (LOAD) fSW = 500 kHz ADuM4470 244 mA CL = 15 pF, f = 12.5 MHz ADuM4471 243 mA CL = 15 pF, f = 12.5 MHz ADuM4472 241 mA CL = 15 pF, f = 12.5 MHz ADuM4473 240 mA CL = 15 pF, f = 12.5 MHz ADuM4474 238 mA CL = 15 pF, f = 12.5 MHz IDD1 Supply Current, Full VISO Load 350 mA CL = 0 pF, f = 0 MHz, VDD1 = VDDA = 5 V, IISO = 400 mA I/O Input Currents IIA, IIB, IIC, IID −10 +0.01 +10 µA Logic High Input Threshold VIH 1.6 V Logic Low Input Threshold VIL 0.4 V Rev. 0 | Page 6 of 36 Document Outline Features Applications Functional Block Diagram General Description Revision History Block Diagrams of I/O Channels Specifications Electrical Characteristics—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 (Pending) Insulation and Safety-Related Specifications DIN V VDE V 0884-10 (VDE V 0884-10) Insulation Characteristics Recommended Operating Conditions Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Applications Information Theory of Operation 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