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LM2623QNHLRQ1 bảng dữ liệu(PDF) 3 Page - Texas Instruments |
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LM2623QNHLRQ1 bảng dữ liệu(HTML) 3 Page - Texas Instruments |
3 / 20 page 1 2 3 4 5 6 7 14 13 12 11 10 9 8 NC PGND PGND EN FREQ FB NC NC NC SW SW BOOT VDD SGND 3 LM2623-Q1 www.ti.com SNVSAO5 – OCTOBER 2017 Product Folder Links: LM2623-Q1 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated 5 Pin Configuration and Functions NHL Package 14-Pin WSON Top View Pin Functions PIN TYPE DESCRIPTION NO. NAME 1 NC — No connect 2, 3 PGND GND Power ground (pins 2 and 3 must be shorted together) 4 EN Digital Active-low shutdown input 5 FREQ Analog Frequency adjust; connect an external resistor between this pin and a voltage source sets the switching frequency of the LM2623-Q1. 6 FB Analog Output voltage feedback 7 NC — No connect 8 NC — No connect 9 SGND GND Signal ground 10 VDD Power Power supply for internal circuitry 11 BOOT Analog Bootstrap supply for the gate drive of internal MOSFET power switch 12, 13 SW Analog Drain of the internal MOSFET power switch (pins 12 and 13 must be shorted together) 14 NC — No connect DAP DAP Thermal Solder to board for enhanced thermal dissipation; must be electrically isolated/floating. |
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