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TPS54335A Datasheet(PDF) 5 Page - Texas Instruments |
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TPS54335A Datasheet(HTML) 5 Page - Texas Instruments |
5 / 46 page TPS54335A, TPS54335-1A, TPS54336A www.ti.com SLVSCD5C – NOVEMBER 2014 – REVISED JULY 2015 7.4 Thermal Information TPS5433xA TPS5433xA and TPS54335-1A THERMAL METRIC(1) UNIT DDA (SO PowerPAD) DRC (VSON) 8 PINS 10 PINS RθJA Junction-to-ambient thermal resistance 42.1 43.9 °C/W RθJC(top) Junction-to-case (top) thermal resistance 50.9 55.4 °C/W RθJB Junction-to-board thermal resistance 31.8 18.9 °C/W ψJT Junction-to-top characterization parameter 8 0.7 °C/W ψJB Junction-to-board characterization parameter 13.5 19.1 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 7.1 5.3 °C/W (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. 7.5 Electrical Characteristics The electrical ratings specified in this section apply to all specifications in this document unless otherwise noted. These specifications are interpreted as conditions that will not degrade the parametric or functional specifications of the device for the life of the product containing it. TJ = –40°C to 150°C, VIN = 4.5 to 28 V, (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE AND UVLO (VIN PIN) Operating input voltage 4.5 28 V Input UVLO threshold Rising VIN 4 4.5 V Input UVLO hysteresis 180 400 mV VIN-shutdown supply current VEN = 0 V 2 10 µA VIN-operating non-switching supply VVSENSE = 810 mV 310 800 µA current ENABLE (EN PIN) Enable threshold Rising 1.21 1.28 V Enable threshold Falling 1.1 1.17 V Input current VEN = 1.1 V 1.15 µA Hysteresis current VEN = 1.3 V 3.3 µA VOLTAGE REFERENCE TJ =25°C 0.7936 0.8 0.8064 Reference V 0.788 0.8 0.812 MOSFET V(BOOT-PH) = 3 V 160 280 m Ω High-side switch resistance(1) V(BOOT-PH) = 6 V 128 230 m Ω Low-side switch resistance(1) VIN = 12 V 84 170 m Ω ERROR AMPLIFIER Error-amplifier transconductance (gm) –2 µA < ICOMP < 2 µA, VCOMP = 1 V 1300 µmhos Error-amplifier source and sink VCOMP = 1 V, 100-mV overdrive 100 µA Start switching peak current threshold 0.5 A COMP to ISWITCH gm 8 A/V CURRENT-LIMIT High-side switch current-limit threshold 4 4.9 6.5 A Low-side switch sourcing current-limit 3.5 4.7 6.1 A Low-side switch sinking current-limit 0 A (1) Measured at pins Copyright © 2014–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TPS54335A TPS54335-1A TPS54336A |
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