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LM2717MTX Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM2717MTX Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 12 page Pin Description Pin Name Function 1 PGND Power ground. PGND and AGND pins must be connected together directly at the part. 2 PGND Power ground. PGND and AGND pins must be connected together directly at the part. 3 AGND Analog ground. PGND and AGND pins must be connected together directly at the part. 4 FB1 Fixed buck output voltage feedback input. 5V C1 Fixed buck compensation network connection. Connected to the output of the voltage error amplifier. 6V BG Bandgap connection. 7V C2 Adjustable buck compensation network connection. Connected to the output of the voltage error amplifier. 8 FB2 Adjustable buck output voltage feedback input. 9 AGND Analog ground. PGND and AGND pins must be connected together directly at the part. 10 AGND Analog ground. PGND and AGND pins must be connected together directly at the part. 11 PGND Power ground. PGND and AGND pins must be connected together directly at the part. 12 PGND Power ground. PGND and AGND pins must be connected together directly at the part. 13 SW2 Adjustable buck power switch input. Switch connected between V IN pins and SW2 pin. 14 V IN Analog power input. V IN pins should be connected together directly at the part. 15 V IN Analog power input. V IN pins should be connected together directly at the part. 16 CB2 Adjustable buck converter bootstrap capacitor connection. 17 SHDN2 Shutdown pin for adjustable buck converter. Active low. 18 SS2 Adjustable buck soft start pin. 19 FSLCT Switching frequency select input. Use a resistor to set the frequency anywhere between 300kHz and 600kHz. 20 SS1 Fixed buck soft start pin. 21 SHDN1 Shutdown pin for fixed buck converter. Active low. 22 CB1 Fixed buck converter bootstrap capacitor connection. 23 V IN Analog power input. V IN pins should be connected together directly at the part. 24 SW1 Fixed buck power switch input. Switch connected between V IN pins and SW1 pin. www.national.com 3 |
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