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TPS54227 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS54227 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 19 page  TPS54227 SLVSAU2 – MAY 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, VIN = 12 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT THERMAL SHUTDOWN Shutdown temperature (2) 165 TSDN Thermal shutdown threshold °C Hysteresis (2) 35 ON-TIME TIMER CONTROL tON On time VIN = 12 V, VO = 1.05 V 150 ns tOFF(MIN) Minimum off time TA = 25°C, VFB = 0.7 V 260 310 ns SOFT START ISSC SS charge current VSS = 1V 1.4 2.0 2.6 μA ISSD SS discharge current VSS = 0.5 V 0.1 0.2 mA UVLO Wake up VREG5 voltage 3.45 3.75 4.05 UVLO UVLO threshold V Hysteresis VREG5 voltage 0.13 0.32 0.48 (2) Not production tested. 4 Copyright © 2011, Texas Instruments Incorporated |
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