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TPS40195RGYTG4 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS40195RGYTG4 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 44 page  TPS40195 SLUS720E – FEBRUARY 2007 – REVISED JULY 2012 www.ti.com ELECTRICAL CHARACTERISTICS (continued) TJ = –40°C to 85°C, VVDD= 12 Vdc, all parameters at zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PWM DMAX Maximum duty cycle (2) 85% tON(min) Minimum controlled pulse(2) 130 HDRV off to LDRV on 50 ns tDEAD Output driver dead time LDRV off to HDRV on 25 SOFT-START VSS_SEL = 0 V, fSW = 250 kHz 4.8 VSS_SEL = 0 V, fSW = 500 kHz 2.4 VSS_SEL = Floating, fSW = 250 kHz 2.4 tSS Soft-start time ms VSS_SEL = Floating, fSW = 500 kHz 1.2 VSS_SEL = VBP, fSW = 250 kHz 1.2 VSS_SEL = VBP, fSW = 500 kHz 0.6 ERROR AMPLIFIER GBWP Gain bandwidth product(2) 7 10 MHz AOL DC gain(2) 60 dB Input bias current (current out of FB IFB 100 nA pin) IEAOP Output source current VFB = 0 V 1 mA IEAOM Output sink current VFB = 2 V 1 SHORT CIRCUIT PROTECTION tPSS(min) Minimum pulse during short circuit(2) 250 ns tBLNK Blanking time(2) 60 90 120 tOFF Off-time between restart attempts 40 ms IILIM ILIM pin bias current TJ = 25°C 7 9 11 μA VILIMOFST Low side comparator offset voltage -20 0 20 mV Short circuit threshold voltage on high- VILIMH TJ = 25°C 400 550 650 mV side MOSFET OUTPUT DRIVERS RHDHI High-side driver pull-up resistance VBOOT - VSW = 4.5 V, IHDRV = -100 mA 3 6 RHDLO High-side driver pull-down resistance VBOOT - VSW = 4.5 V, IHDRV = 100 mA 1.5 3.0 Ω RLDHI Low-side driver pull-up resistance ILDRV = -100 mA 2.5 5.0 RLDLO Low-side driver pull-down resistance ILDRV = 100 mA 0.8 1.5 tHRISE High-side driver rise time(2) 15 35 tHFALL High-side driver fall time(2) 10 25 CLOAD = 1 nF ns tLRISE Low-side driver rise time(2) 15 35 tLFALL Low-side driver fall time(2) 10 25 UVLO VUVLOBP BP5 UVLO threshold voltage 3.9 4.1 4.3 V VUVLOBPH BP5 UVLO hysteresis voltage 800 mV VUVLO Turn-on voltage 1.125 1.26 1.375 V IUVLO UVLO pin hysteresis current VUVLO = 1.375 V 5.2 μA SHUTDOWN VIH High-level input voltage, EN 1.9 3 V VIL Low-level input voltage, EN 0.6 POWER GOOD (2) Specified by design. Not production tested. 4 Copyright © 2007–2012, Texas Instruments Incorporated |
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