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TPS40422RSBT Datasheet(PDF) 6 Page - Texas Instruments |
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TPS40422RSBT Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 71 page  6 TPS40422 SLUSAQ4E – OCTOBER 2011 – REVISED SEPTEMBER 2016 www.ti.com Product Folder Links: TPS40422 Submit Documentation Feedback Copyright © 2011–2016, Texas Instruments Incorporated (1) Hysteresis of at least 150 mV is specified by design. (2) Specified by design. Not production tested. 7.4 Electrical Characteristics TJ = –40ºC to 125ºC, VIN = VDD = 12 V, fSW = 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 IVDD Input operating current Switching, no driver load 18 25 mA Not switching 15 20 UVLO VIN(on) Input turn on voltage(1) Default settings 4.25 V VIN(off) Input turn off voltage(1) 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 VINONOFF(acc) Turn on and turn off voltage accuracy(2) 4.5 V ≤ VVDD ≤ 20 V, all VIN_ON and VIN_OFF settings –5% 5% ERROR AMPLIFIER VFB Feedback pin voltage 0°C ≤ TJ ≤ 85°C 597 600 603 mV –40°C ≤ TJ ≤ 125°C 594 600 606 AOL Open-loop gain(2) 80 dB GBWP Gain bandwidth product(2) 24 MHz IFB FB pin bias current (out of pin) VFB = 0.6 V 50 nA ICOMP Sourcing VFB = 0 V 1 3 mA Sinking VFB = 1 V 3 9 BP6 REGULATOR VBP6 Output voltage IBP6 = 10 mA 6.2 6.5 6.8 V 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(2) 3.3 3.55 3.8 V VBP6UV(hyst) Regulator UVLO voltage hysteresis(2) 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 fSW Adjustment range 100 1000 kHz Switching frequency RRT = 40 kΩ 450 500 550 kHz VRMP Ramp peak-to-peak(2) VVDD/8.2 V VVLY Valley voltage(2) 0.7 0.8 1.0 V |
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