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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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TPS40422RHAR Fiches technique(PDF) 4 Page - Texas Instruments |
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TPS40422RHAR Fiches technique(HTML) 4 Page - Texas Instruments |
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4 / 54 page  TPS40422 SLUSAQ4A – OCTOBER 2011 – REVISED DECEMBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS (1) TJ = –40ºC to 125ºC, VIN = VDD = 12 V, RT set for 500 kHz, all parameters at zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUT SUPPLY VVDD Input supply voltage range 4.5 20 V Switching, no driver load 18 25 IVDD Input operating current mA Not switching 15 20 UVLO VIN(on) Input turn on voltage(2) Default settings 4.25 V VIN(off) Input turn off voltage(2) Default settings 4 V VINON(rng) Programmable range for turn on voltage 4.25 16 V VINOFF(rng) Programmable range for turn off voltage 4 15.75 V 4.5 V ≤ VVDD ≤ 20 V, all VIN_ON and VINONOFF(acc) Turn on and turn off voltage accuracy(1) –5% 5% VIN_OFF settings ERROR AMPLIFIER 0 °C ≤ TJ ≤ 85°C 597 600 603 VFB Feedback pin voltage mV –40°C ≤ TJ ≤ 125°C 594 600 606 AOL Open-loop gain(3) 80 dB GBWP Gain bandwidth product(3) 24 MHz IFB FB pin bias current (out of pin) VFB = 0.6 V 50 nA Sourcing VFB = 0 V 1 3 ICOMP mA Sinking VFB = 1 V 3 9 BP6 REGULATOR Output voltage IBP6 = 10 mA 6.2 6.5 6.8 V VBP6 Dropout voltage VVIN – VBP6, VVDD = 4.5 V, IBP6 = 25 mA 70 120 mV IBP6 Output current VVDD = 12 V 120 mA VBP6UV Regulator UVLO voltage(3) 3.3 3.55 3.8 V VBP6UV(hyst) Regulator UVLO voltage hysteresis(3) 230 255 270 mV BPEXT VBPEXT(swover) BPEXT switch-over voltage 4.5 4.6 V Vhys(swover) BPEXT switch-over hysteresis 100 200 mV VBPEXT(do) BPEXT dropout voltage VBPEXT–VBP6, VBPEXT = 4.8 V, IBP6 = 25 mA 100 mV BOOTSTRAP VBOOT(drop) Bootstrap voltage drop IBOOT = 5 mA 0.7 1.0 V BP3 REGULATOR VBP3 Output voltage VVDD = 4.5 V, IBP3 ≤ 5 mA 3.1 3.3 3.5 V OSCILLATOR Adjustment range 100 1000 kHz fSW Switching frequency RRT = 40 kΩ 450 500 550 kHz VRMP Ramp peak-to-peak(3) VVDD/8.2 V VVLY Valley voltage(3) 0.7 0.8 1.0 V (1) Thresholds selected by entering high side parameters for PGOOD_ON and PGOOD_OFF. Cannot select same threshold for PGOOD_ON & PGOOD_OFF. (2) By design, hysteresis of at least 150 mV is specified. (3) Specified by design. Not production tested. 4 Submit Documentation Feedback Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s) :TPS40422 |
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Description similaire - TPS40422RHAR |
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