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905-5462001 Fiches technique(PDF) 6 Page - Texas Instruments |
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905-5462001 Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 46 page 6 TPS54620 SLVS949E – MAY 2009 – REVISED JULY 2016 www.ti.com Product Folder Links: TPS54620 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953b. 7.4 Thermal Information THERMAL METRIC(1) RGY RHY UNIT 14 PINS 14 PINS RθJA Junction-to-ambient thermal resistance 36.9 43.4 °C/W RθJCtop Junction-to-case (top) thermal resistance 48.7 45.7 °C/W RθJB Junction-to-board thermal resistance 13.9 20.0 °C/W ψJT Junction-to-top characterization parameter 0.6 0.7 °C/W ψJB Junction-to-board characterization parameter 14.2 20.0 °C/W RθJCbot Junction-to-case (bottom) thermal resistance 3.1 2.6 °C/W (1) Measured at pins 7.5 Electrical Characteristics TJ = –40°C to 150°C, VIN = 4.5V to 17V, PVIN = 1.6V to 17V (unless otherwise noted) DESCRIPTION TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE (VIN AND PVIN PINS) PVIN operating input voltage 1.6 17 V VIN operating input voltage 4.5 17 V VIN internal UVLO threshold VIN rising 4.0 4.5 V VIN internal UVLO hysteresis 150 mV VIN shutdown supply Current EN = 0 V 2 5 μA VIN operating – non switching supply current VSENSE = 810 mV 600 800 μA ENABLE AND UVLO (EN PIN) Enable threshold Rising 1.21 1.26 V Enable threshold Falling 1.10 1.17 V Input current EN = 1.1 V 1.15 μA Hysteresis current EN = 1.3 V 3.4 μA VOLTAGE REFERENCE Voltage reference 0 A ≤ IOUT ≤ 6 A 0.792 0.800 0.808 V MOSFET High-side switch resistance BOOT-PH = 3 V 32 60 m Ω High-side switch resistance(1) BOOT-PH = 6 V 26 40 m Ω Low-side Switch Resistance(1) VIN = 12 V 19 30 m Ω ERROR AMPLIFIER Error amplifier Transconductance (gm) –2 μA < ICOMP < 2 μA, V(COMP) = 1 V 1300 μMhos Error amplifier dc gain VSENSE = 0.8 V 1000 3100 V/V Error amplifier source/sink V(COMP) = 1 V, 100 mV input overdrive ±110 μA Start switching threshold 0.25 V COMP to Iswitch gm 16 A/V CURRENT LIMIT High-side switch current limit threshold 8 11 A Low-side switch sourcing current limit 7 10 A Low-side switch sinking current limit 2.3 A |
Numéro de pièce similaire - 905-5462001 |
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Description similaire - 905-5462001 |
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