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MAX15058EWL Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX15058EWL Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 21 page High-Efficiency, 3A, Current-Mode Synchronous, Step-Down Switching Regulator _______________________________________________________________________________________ 9 Pin Description Pin Configuration BUMP NAME FUNCTION A1 GND Analog Ground/Low-Side Switch Source Terminal. Connect to the PCB copper plane at one point near the input bypass capacitor return terminal. A2 LX Inductor Connection. Connect LX to the switched side of the inductor. LX is high impedance when the IC is in shutdown mode. A3 IN Input Power Supply. Input supply range is from 2.7V to 5.5V. Bypass with a minimum 10FF ceramic capacitor to GND. See Figures 5 and 6. B1 COMP Voltage Error-Amplifier Output. Connect the necessary compensation network from COMP to GND. See the Closing the Loop: Designing the Compensation Circuitry section. B2 SKIP Skip-Mode Input. Connect to EN to select skip mode or leave unconnected for normal operation. B3 EN Enable Input. EN is a digital input that turns the regulator on and off. Drive EN high to turn on the regula- tor. Connect to IN for always-on operation. C1 FB Feedback Input. Connect FB to the center tap of an external resistor-divider from the output to GND to set the output voltage from 0.6V up to 94% of VIN. C2 SS/REFIN Soft-Start/External Voltage Reference Input. Connect a capacitor from SS/REFIN to GND to set the startup time. See the Setting the Soft-Start Time section for details on setting the soft-start time. Apply a voltage reference from 0V to VIN - 1.5V to drive soft-start externally. C3 PGOOD Open-Drain Power-Good Output. PGOOD goes high when FB is above 555mV and pulls low if FB is below 527mV. WLP TOP VIEW (BUMPS ON BOTTOM) SS/REFIN FB PGOOD SKIP COMP EN LX GND IN MAX15058 A1 B1 C1 C2 C3 B2 B3 A3 A2 |
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