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TPS53355 Datasheet(PDF) 6 Page - Texas Instruments |
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TPS53355 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 37 page 6 TPS53355 SLUSAE5C – AUGUST 2011 – REVISED FEBRUARY 2016 2015 www.ti.com Product Folder Links: TPS53355 Submit Documentation Feedback Copyright © 2011–2015, Texas Instruments Incorporated Electrical Characteristics (continued) Over recommended free-air temperature range, VVDD= 12 V (unless otherwise noted) PARAMETER CONDITIONS MIN TYP MAX UNIT (2) Not production tested. Test condition is VIN= 12 V, VOUT= 1.1 V, IOUT = 10 A using application circuit shown in Figure 47. POWERGOOD VTHPG PG threshold PG in from lower 92.5% 95.0% 98.5% PG in from higher 107.5% 110.0% 112.5% PG hysteresis 2.5% 5.0% 7.5% RPG PG transistor on-resistance 15 30 55 Ω tPGDEL PG delay Delay for PG in 0.8 1 1.2 ms LOGIC THRESHOLD AND SETTING CONDITIONS VEN EN Voltage Enable 1.8 V Disable 0.6 IEN EN Input current VEN = 5 V 1.0 µA fSW Switching frequency RRF = 0 Ω to GND, TA = 25°C (2) 200 250 300 kHz RRF = 187 kΩ to GND, TA = 25°C (2) 250 300 350 RRF = 619 kΩ, to GND, TA = 25°C (2) 350 400 450 RRF = Open, TA= 25°C (2) 450 500 550 RRF = 866 kΩ to VREG, TA = 25°C (2) 580 650 720 RRF = 309 kΩ to VREG, TA = 25°C (2) 670 750 820 RRF = 124 kΩ to VREG, TA = 25°C (2) 770 850 930 RRF = 0 Ω to VREG, TA = 25°C (2) 880 970 1070 PROTECTION: CURRENT SENSE ITRIP TRIP source current VTRIP = 1 V, TA = 25°C 9.4 10.0 10.6 µA TCITRIP TRIP current temperature coeffficient On the basis of 25°C(1) 4700 ppm/°C VTRIP Current limit threshold setting range VTRIP-GND 0.4 2.4 V VOCL Current limit threshold VTRIP = 2.4 V 68.5 75.0 81.5 mV VTRIP = 0.4 V 7.5 12.5 17.5 VOCLN Negative current limit threshold VTRIP = 2.4 V -315 -300 -285 mV VTRIP = 0.4 V -58 -50 -42 VAZCADJ Auto zero cross adjustable range Positive 3 15 mV Negative –15 –3 PROTECTION: UVP and OVP VOVP OVP trip threshold OVP detect 115% 120% 125% tOVPDEL OVP proprogation delay VFB delay with 50-mV overdrive 1 µs VUVP Output UVP trip threshold UVP detect 65% 70% 75% tUVPDEL Output UVP proprogation delay 0.8 1.0 1.2 ms tUVPEN Output UVP enable delay From enable to UVP workable 1.8 2.6 3.2 ms UVLO VUVVREG VREG UVLO threshold Wake up 4.00 4.20 4.33 V Hysteresis 0.25 THERMAL SHUTDOWN TSDN Thermal shutdown threshold Shutdown temperature(1) 145 °C Hysteresis(1) 10 |
Número de pieza similar - TPS53355_16 |
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Descripción similar - TPS53355_16 |
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