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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SIC437 датащи(PDF) 4 Page - Vishay Siliconix |
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SIC437 датащи(HTML) 4 Page - Vishay Siliconix |
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4 / 27 page  SiC437, SiC438 www.vishay.com Vishay Siliconix S20-0679-Rev. D, 27-Aug-2020 4 Document Number: 75921 For technical questions, contact: powerictechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 ELECTRICAL SPECIFICATIONS (VIN = 12 V, VEN = 5 V, TJ = -40 °C to +125 °C, unless otherwise stated) PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT Power Supplies VDD supply VDD VIN = 6 V to 28 V (SiC43xA, SiC43xB) 4.75 5 5.25 V VDD UVLO threshold, rising VDD_UVLO 3.3 3.6 3.9 VDD UVLO hysteresis VDD_UVLO_HYST -300 - mV Maximum VDD current IDD VIN = 6 V to 28 V 3 - - mA VDRV supply VDRV VIN = 6 V to 28 V (SiC43xA, SiC43xB) 4.75 5 5.25 V Maximum VDRV current IDRV VIN = 6 V to 28 V 50 - - mA Input current IVIN Non-switching, VFB > 0.6 V - 50 120 μA Shutdown current IVIN_SHDN VEN = 0 V - 0.5 3 Controller and Timing Feedback voltage VFB TJ = 25 °C 597 600 603 m/V TJ = -40 °C to +125 °C (1) 594 600 606 VFB input bias current IFB -2 - nA Minimum on-time tON_MIN. -50 65 ns tON accuracy tON_ACCURACY -10 - 10 % On-time range tON_RANGE 65 - 2250 ns Minimum frequency, skip mode fSW_MIN. Ultrasonic version (SiC43xA, SiC43xC) 20 - 30 kHz Power save version (SiC43xB, SiC43xD) 0 - - Minimum off-time tOFF_MIN. 205 250 305 ns Power MOSFETs (SiC437) High side on resistance RON_HS VDRV = 5 V, TA = 25 °C - 10.1 - m Low side on resistance RON_LS -3.9 - Power MOSFETs (SiC438) High side on resistance RON_HS VDRV = 5 V, TA = 25 °C - 10.1 - m Low side on resistance RON_LS -5.5 - Fault Protections Over current protection (inductor valley current) IOCL_P TJ = -10 °C to +125 °C -20 - 20 % Output OVP threshold VOVP VFB with respect to 0.6 V reference -20 - Output UVP threshold VUVP --80 - Over temperature protection TOTP_RISING Rising temperature - 150 - °C TOTP_HYST Hysteresis - 25 - Power Good Power good output threshold VFB_RISING_VTH_OV VFB rising above 0.6 V reference - 20 - % VFB_FALLING_VTH_UV VFB falling below 0.6 V reference - -10 - Power good hysteresis VFB_HYST -40 - mV Power good on resistance RON_PGOOD -7.5 15 Power good delay time tDLY_PGOOD 15 25 35 μs EN / MODE / Ultrasonic Threshold EN logic high level VEN_H 1.6 - - V EN logic low level VEN_L -- 0.4 EN pull down resistance REN -5 - M Switching Frequency MODE1 (switching frequency) RMODE1 fsw = 300 kHz - 51 55 k fsw = 500 kHz 90 100 110 fsw = 750 kHz 180 200 220 fsw = 1000 kHz 450 499 550 |
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