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TPS54328DDA Fiches technique(PDF) 5 Page - Texas Instruments |
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TPS54328DDA Fiches technique(HTML) 5 Page - Texas Instruments |
5 / 21 page 1 2 3 4 5 6 7 8 SW GND VBST VIN EN VFB VREG5 SS TPS54328 (DDA) Exposed Thermal Pad TPS54328 www.ti.com SLVSAN2 – NOVEMBER 2010 DEVICE INFORMATION DDA PACKAGE (TOP VIEW) PIN FUNCTIONS PIN DESCRIPTION NAME NO. EN 1 Enable input control. Active high. VFB 2 Converter feedback input. Connect to output voltage with feedback resistor divider. 5.5 V power supply output. A capacitor (typical 1 µF) should be connected to GND. VREG5 is not active VREG5 3 when EN is low. SS 4 Soft-start control. An external capacitor should be connected to GND. Ground pin. Power ground return for switching circuit. Connect sensitive SS and VFB returns to GND at GND 5 a single point. SW 6 Switch node connection between high-side NFET and low-side NFET. Supply input for the high-side FET gate drive circuit. Connect 0.1µF capacitor between VBST and SW VBST 7 pins. An internal diode is connected between VREG5 and VBST. VIN 8 Input voltage supply pin. Exposed Thermal Thermal pad of the package. Must be soldered to achieve appropriate dissipation. Must be connected to Back side Pad GND. Copyright © 2010, Texas Instruments Incorporated 5 Product Folder Link(s) :TPS54328 |
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