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LM3477A Datasheet(PDF) 2 Page - National Semiconductor (TI) |
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LM3477A Datasheet(HTML) 2 Page - National Semiconductor (TI) |
2 / 23 page Connection Diagram 20003302 8 Lead Mini SO8 Package (MSOP-8 Package) Package Marking and Ordering Information Order Number Package Type Package Marking Supplied As: LM3477MM MSOP-8 S13B 1000 units on Tape and Reel LM3477MMX MSOP-8 S13B 3500 units on Tape and Reel LM3477AMM MSOP-8 S13A 1000 units on Tape and Reel LM3477AMMX MSOP-8 S13A 3500 units on Tape and Reel Pin Description Pin Name Pin Number Description I SEN 1 Current sense input pin. Voltage generated across an external sense resistor is fed into this pin. COMP/SD 2 Compensation pin. A resistor-capacitor combination connected to this pin provides compensation for the control loop. Pull this pin below 0.65V to shutdown. FB 3 Feedback pin. The output voltage should be adjusted using a resistor divider to provide 1.270V at this pin. GND 4 Ground pin. SW 5 Switch Node. Source of the external MOSFET is connected to this node. DR 6 Drive pin. The gate of the external MOSFET should be connected to this pin. CB 7 Boot-strap pin. A capacitor must be connected between this pin and SW pin (pin 5) for proper operation. The voltage developed across this capacitor provides the gate drive for the external MOSFET. V IN 8 Power Supply Input pin. www.national.com 2 |
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