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LM2831XSD Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM2831XSD Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 27 page Pin Descriptions 5-Pin SOT23 Pin Name Function 1 SW Output switch. Connect to the inductor and catch diode. 2 GND Signal and power ground pin. Place the bottom resistor of the feedback network as close as possible to this pin. 3 FB Feedback pin. Connect to external resistor divider to set output voltage. 4 EN Enable control input. Logic high enables operation. Do not allow this pin to float or be greater than VIN + 0.3V. 5 VIN Input supply voltage. Pin Descriptions 6-Pin LLP Pin Name Function 1 FB Feedback pin. Connect to external resistor divider to set output voltage. 2 GND Signal and power ground pin. Place the bottom resistor of the feedback network as close as possible to this pin. 3 SW Output switch. Connect to the inductor and catch diode. 4 VIND Power Input supply. 5 VINA Control circuitry supply voltage. Connect VINA to VIND on PC board. 6 EN Enable control input. Logic high enables operation. Do not allow this pin to float or be greater than VINA + 0.3V. DAP Die Attach Pad Connect to system ground for low thermal impedance, but it cannot be used as a primary GND connection. www.national.com 3 |
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