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TPS54339 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS54339 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 21 page POWER PAD TPS54339 DDA HSOP8 SW VBST SS VFB GND 8 2 3 4 1 EN VREG5 7 6 5 VIN TPS54339 SLVSBT2 – JANUARY 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, VIN = 12 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SOFT START ISSC SS charge current VSS = 1.0 V 4.2 6.0 7.8 μA ISSD SS discharge current VSS = 0.5 V 0.8 1.5 mA HICCUP AND OVERVOLTAGE PROTECTION VOVP Output OVP threshold OVP Detect (L>H) 125% VUVP Output Hiccup threshold Hiccup detect (H>L) 65% TUVPDEL Output Hiccup delay to Hiccup state 6 µs TUVPEN Output Hiccup Enable delay Relative to soft-start time x1.7 UVLO Wake up VREG5 voltage 3.45 3.75 4.05 UVLO UVLO threshold V Hysteresis VREG5 voltage 0.17 0.33 0.47 DEVICE INFORMATION DDA PACKAGE (TOP VIEW) PIN FUNCTIONS PIN DESCRIPTION NAME NO. Supply input for the high-side FET gate drive circuit. Connect 0.1µF capacitor between VBST and SW pins. VBST 1 An internal diode is connected between VREG5 and VBST. VIN 2 Input voltage supply pin. SW 3 Switch node connection between high-side NFET and low-side NFET. Ground pin. Power ground return for switching circuit. Connect sensitive SS and VFB returns to GND at a GND 4 single point. VFB 5 Converter feedback input. Connect to output voltage with feedback resistor divider. 4 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links: TPS54339 |
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