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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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TPS65258RHAR Fiches technique(PDF) 9 Page - Texas Instruments |
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TPS65258RHAR Fiches technique(HTML) 9 Page - Texas Instruments |
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9 / 32 page  TPS65258 www.ti.com SLVSAB31 – SEPTEMBER 2011 ELECTRICAL CHARACTERISTICS (continued) TJ = –40°C to 125°C, VIN = 12 V, fSW = 500 kHz (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT MOSFET (BUCK 3) On resistance of high side FET on H.S. Switch 25 °C, BOOT = 6.5 V 120 m Ω CH3 On resistance of low side FET on L.S. Switch 25 °C, VIN = 12 V 80 m Ω CH3 ERROR AMPLIFIER gM Error amplifier transconductance -2 µA < ICOMP < 2 µA 130 µ℧ gmPS COMP to ILX gm ILX = 0.5 A 10 A/V POWER GOOD RESET GENERATOR Output falling 85 Threshold voltage for buck under VUVBUCKX % Output rising (PG will be voltage 90 asserted) tUV_deglitch Deglitch time (both edges) 11 ms tON_HICCUP Hiccup mode ON time VUVBUCKX asserted 12 ms All converters disabled. Once tOFF_HICCUP elapses, all tOFF_HICCUP Hiccup mode OFF time 20 ms converters will go through sequencing again. Output rising (high side FET will 109 be forced off) Threshold voltage for buck over VOVBUCKX % voltage Output falling (high side FET will 107 be allowed to switch ) Measured after the later of tRP minimum reset period Buck1 or Buck3 power-up 100 ms successfully THERMAL SHUTDOWN TTRIP Thermal shut down trip point Rising temperature 160 °C THYST Thermal shut down hysteresis Device re-starts 20 °C TTRIP_DEGLITCH Thermal shut down deglitch 110 µs USB SWITCHES VINUSB USB input voltage range 3 6 V 0.66 x VIH_USB_EN USB_EN high level input voltage V3p3 = 3.2-3.4 V, VUSB_EN rising V V3p3 0.33 x VIL_USB_EN USB_EN low level input voltage V3p3 = 3.2-3.4 V, VUSB_EN falling V V3p3 Static drain-source on-state USB_VIN = 5 V and Io_USB = RDS_USB 120 m Ω resistance 0.5 A, TJ = 25°C Increasing USB_Vo current ICS_USB USB current limit 1.2 A di/dt <1 A/s Increasing USB_Vo current di/dt < Overcurrent detection factor KOVERCURRENT 1A/s 1.5 Ratio of ILIM_START/ICS_USB VINUSB = 5 V VUSBx_nFAULT USBx_nFAULT output voltage low IUSB_ILIM = 3 mA 0.4 V Fault assertion due to Over TCS_USB USB over current fault deglitch 5 ms current protection TUSB_TRIP USB thermal trip point Rising temperature 130 °C TUSB_HYST USB thermal trip hysteresis Falling temperature 20 °C Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link(s): TPS65258 |
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Description similaire - TPS65258RHAR |
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