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TPS40040 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS40040 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 38 page  www.ti.com TPS40040, TPS40041 SLUS700D – MARCH 2006 – REVISED DECEMBER 2007 ELECTRICAL CHARACTERISTICS (continued) TJ = -40 C to 85C VDD = 5 V, (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Soft Start/Enable Calibration time before softstart tCAL (2) 1.0 1.6 2.5 begins ms tSS (2) Soft start time FB rise time from 0 V to 600 mV 3.0 4.0 6.0 tREG Time to voltage regulation Sum of tCAL plus tSS 4.0 5.6 8.5 VEN Enable threshold EN voltage w.r.t. VDD -0.8 -1.2 -1.6 V VENHYS Enable hysteresis 50 mV Bootstrap RBOOT3V3 VBOOT to VDD, VDD = 3.3 V 50 Bootstrap switch resistances Ω RBOOT5V VBOOT to VDD, VDD = 5 V 30 Output Driver VBOOT - VSW = 3.3 V, ISRCE = 100 RHDHI3V3 HDRV pull-up resistance 3.0 5.5 mA RHDLO3V3 HDRV pull-down resistance VBOOT - VSW = 3.3 V, ISINK = 100 mA 1.5 3 Ω RLDHI3V3 LDRV pull-up resistance VDD = 3.3 V, ISOURCE = 100 mA 3.0 5.5 RLDLO3V3 LDRV pull-down resistance VDD = 3.3 V, ISINK = 100 mA 1.0 2.0 tRISE (3) LDRV, HDRV rise time CLOAD = 1 nF 15 35 tFALL (3) LDRV, HDRV fall time CLOAD = 1 nF 10 25 ns TDEAD HL Adaptive timing HDRV to LDRV No load 15 30 TDEAD LH Adaptive timing LDRV to HDRV No load 5 15 SW Node ILEAK Leakage current EN = VDD -2 µA Thermal Shutdown tSD (3) Shutdown temperature 145 C Hysteresis 15 (2) tCAL and tSS track with temperature and input voltage (3) Ensured by design. Not production tested. 4 Copyright © 2006–2007, Texas Instruments Incorporated Product Folder Link(s): TPS40040 TPS40041 |
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