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TPS51218 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS51218 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 27 page TPS51218 www.ti.com SLUS935B – MAY 2009 – REVISED FEBRUARY 2012 ELECTRICAL CHARACTERISTICS (continued) over recommended free-air temperature range, V5IN=5V. (Unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PROTECTION: CURRENT SENSE ITRIP TRIP source current VTRIP = 1V, TA = 25°C 9 10 11 μA TRIP current temperature TCITRIP On the basis of 25 °C 4700 ppm/ °C coeffficient Current limit threshold setting VTRIP VTRIP-GND Voltage 0.2 3 V range VTRIP = 3.0 V 355 375 395 VOCL Current limit threshold VTRIP = 1.6 V 185 200 215 mV VTRIP = 0.2 V 17 25 33 VTRIP = 3.0 V –395 –375 –355 VOCLN Negative current limit threshold VTRIP = 1.6 V –215 –200 –185 mV VTRIP = 0.2 V –33 –25 –17 Positive 3 15 Adaptive zero cross adjustable VAZCADJ mV range Negative –15 –3 PROTECTION: UVP AND OVP VOVP OVP trip threshold OVP detect 115% 120% 125% tOVPDEL OVP propagation delay time 50-mV overdrive 1 μs VUVP Output UVP trip threshold UVP detect 65% 70% 75% Output UVP propagation delay tUVPDEL 0.8 1 1.2 ms time tUVPEN Output UVP enable delay time From Enable to UVP workable 1.0 1.2 1.4 ms UVLO Wake up 4.20 4.38 4.50 VUVV5IN V5IN UVLO threshold V Shutdown 3.7 3.93 4.1 THERMAL SHUTDOWN Shutdown temperature (3) 145 TSDN Thermal shutdown threshold °C Hysteresis(3) 10 (3) Ensured by design. Not production tested. Copyright © 2009–2012, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): TPS51218 |
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