ADuM4471

Isolated Switching Regulator with Quad-Channel Isolators Data Sheet ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474 FEATURES Isolated PWM feedback with built in compensation Primary side transformer driver for up to 2.5 W output power with 5 V input voltage Regulated adjustable output: 3.3 V to 24 V Up to 80% efficiency Quad dc-to-25 Mbps (NRZ) signal isolation channels 200 kHz to 1 MHz adjustable oscillator Soft start function at power-up Pulse-by-pulse overcurrent protection Thermal shutdown 5000 V rms isolation High common-mode transient immunity: >25 kV/μs 20-lead SOIC package with 8.3 mm creepage High temperature operation: 105°C APPLICATIONS Power supply start-up bias and gate drives Isolated sensor interfaces Process controls RS-232/RS-422/RS-485 transceivers VDD1 VDDA I/OA I/OB I/OC I/OD FUNCTIONAL BLOCK DIAGRAM RECT VISO VREG ADuM4470/ ADuM4471/ ADuM4472/ ADuM4473/ ADuM4474 PRIMARY REG CONTROLLER/ DRIVER SECONDARY CONTROLLER INTERNAL FEEDBACK VDD2 5V FB OC PRIM...