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TPS54429EPWPR Datasheet(PDF) 4 Page - Texas Instruments |
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TPS54429EPWPR Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 26 page  TPS54429E SLVSAS0 –FEBRUARY 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, VIN = 12V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CURRENT LIMIT Iocl Current limit LOUT = 1.5 μH(2), TA = -20 ºC to 85 ºC 5.2 5.9 8.0 A THERMAL SHUTDOWN Shutdown temperature (2) 165 TSDN Thermal shutdown threshold ° C Hysteresis (2) 30 ON-TIME TIMER CONTROL TON On time VIN = 12 V, VO = 1.05 V 145 ns TOFF(MIN) Minimum off time TA = 25°C, VFB = 0.7 V 260 310 ns SOFT START ISSC SS charge current VSS = 0 V 1.4 2.0 2.6 μ A ISSD SS discharge current VSS = 0.5 V 0.1 0.2 mA POWER GOOD VFB rising (good) 85 90 95 % VTHPG PG threshold VFB falling (fault) 85 % IPG PG sink current PG = 0.5 V 2.5 5 mA OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION VOVP Output OVP trip threshold OVP detect 115 120 125 % TOVPDEL Output OVP prop delay 10 μ s UVP detect 60 65 70 % VUVP Output UVP trip threshold Hysteresis 10 % TUVPDEL Output UVP delay 0.25 ms TUVPEN Output UVP enable delay Relative to soft-start time x 1.7 UVLO Wake up VREG5 voltage 3.5 3.8 4.1 VUVLO UVLO threshold V Hysteresis VREG5 voltage 0.23 0.35 0.47 (2) Not production tested. 4 © 2011, Texas Instruments Incorporated Product Folder Link(s) :TPS54429E |
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