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TPS40050-Q1 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS40050-Q1 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 35 page TPS40050Q1 TPS40051Q1 TPS40053Q1 SGLS219A − NOVEMBER 2003 − REVISED MAY 2008 www.ti.com 5 ELECTRICAL CHARACTERISTICS TA = −40°C to 125°C, VIN = 24 Vdc, RT = 90.9 kΩ, IKFF = 150 µA, fSW = 500 kHz, all parameters at zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CURRENT LIMIT ISINK Current limit sink current 6.2 10.0 13 µA Propagation delay to output VILIM = 23.7 V, VSW = (VILIM − 0.5 V) 200 300 500 Propagation delay to output VILIM = 23.7 V, VSW = (VILIM − 2 V) 100 200 400 ns tON Switch leading-edge blanking pulse time(1) 100 ns tOFF Off time during a fault 7 cycles VILIM = 23.6 V, TA = 25°C −125 −35 VOS Offset voltage SW vs. ILIM VILIM = 23.6 V, 0 °C ≤ TA ≤ 85°C −140 −75 −15 mV VOS Offset voltage SW vs. ILIM VILIM = 23.6 V, −40 °C ≤ TA ≤ 125°C −250 10 mV OUTPUT DRIVER tLRISE Low-side driver rise time CLOAD = 2200 pF 48 96 tLFALL Low-side driver fall time CLOAD = 2200 pF 24 48 ns tHRISE High-side driver rise time CLOAD = 2200 pF, (HDRV − SW) 48 96 ns tHFALL High-side driver fall time CLOAD = 2200 pF, (HDRV − SW) 36 72 VOH High-level ouput voltage, HDRV IHDRV = −0.1 A (HDRV − SW) BOOST −1.5 V BOOST −1.0 V VOL Low-level ouput voltage, HDRV IHDRV = 0.1 A (HDRV − SW) 0.75 V VOH High-level ouput voltage, LDRV ILDRV = −0.1 A BP10 −1.4 V BP10 − 1.0 V V VOL Low-level ouput voltage, LDRV ILDRV = 0.1 A 0.5 Minimum controllable pulse width 100 150 ns SS/SD SHUTDOWN VSD Shutdown threshold voltage Outputs off 90 125 150 mV VEN Device active threshold voltage 190 210 245 mV BOOST REGULATOR VBOOST Output voltage VIN = 24.0 V 31.5 32.5 33.5 V RECTIFIER ZERO CURRENT COMPARATOR (TPS40050/TPS40053 SS ONLY) VSW Switch voltage LDRV output OFF −10 −0.5 10 mV SW NODE ILEAK Leakage current(1) 25 µA THERMAL SHUTDOWN TSD Shutdown temperature(1) 165 °C TSD Hysteresis(1) 20 °C UVLO VUVLO KFF programmable threshold voltage RKFF = 28.7 kΩ 6.9 7.5 7.9 V (1) Ensured by design. Not production tested. (2) IKFF increases with SYNC frequency, IKFF decreases with maximum duty cycle |
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