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TPS56428 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS56428 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 22 page POWER PAD TPS56428 DDA HSOP8 SW VBST PG VFB GND 8 2 3 4 1 EN VREG5 7 6 5 VIN TPS56428 SLVSBV4A – APRIL 2013 – REVISED APRIL 2013 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 = 0.5 V 260 310 ns SOFT START tss Soft-start time Internal soft-start time 0.7 1.0 1.3 ms POWER GOOD VFB rising(good) 85% 90% 95% VTHPG PG threshold VFB falling(Fault) 85% IPG IPG PG sink current PG=0.5V 2 4 mA OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION VOVP Output OVP threshold OVP Detect (L>H) 125% VUVP Output UVP threshold UVP detect (H>L) 65% tUVPDEL Output UVP delay To Hiccup state 7 µs tUVPEN Output UVP Enable delay Relative to soft start time x1.7 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. DEVICE INFORMATION DDA PACKAGE (TOP VIEW) 4 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links :TPS56428 |
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