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LM3478 Datasheet(PDF) 2 Page - National Semiconductor (TI) |
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LM3478 Datasheet(HTML) 2 Page - National Semiconductor (TI) |
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Connection Diagram 10135502 8 Lead Mini SO8 Package (MSOP-8 Package) Package Marking and Ordering Information Order Number Package Type Package Marking Supplied As: LM3478MM MSOP-8 S14B 1000 units on Tape and Reel LM3478MMX MSOP-8 S14B 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 2 Compensation pin. A resistor, capacitor combination connected to this pin provides compensation for the control loop. FB 3 Feedback pin. The output voltage should be adjusted using a resistor divider to provide 1.26V at this pin. AGND 4 Analog ground pin. PGND 5 Power ground pin. DR 6 Drive pin of the IC. The gate of the external MOSFET should be connected to this pin. FA/SD 7 Frequency adjust and Shutdown pin. A resistor connected to this pin sets the oscillator frequency. A high level on this pin for ≥ 30µs will turn the device off. The device will then draw less than 10µA from the supply. V IN 8 Power Supply Input pin. www.national.com 2 |
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