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TPS54528DDAR Datasheet(PDF) 5 Page - Texas Instruments |
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TPS54528DDAR Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 26 page  TPS54528 www.ti.com SLVSAY4C – JULY 2011 – REVISED MARCH 2014 7.4 Thermal Information TPS54528 THERMAL METRIC(1) UNIT DDA (8) θJA Junction-to-ambient thermal resistance 43.5 θJCtop Junction-to-case (top) thermal resistance 49.4 θJB Junction-to-board thermal resistance 25.6 °C/W ψJT Junction-to-top characterization parameter 7.4 ψJB Junction-to-board characterization parameter 25.5 θJCbot Junction-to-case (bottom) thermal resistance 5.2 (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. 7.5 Electrical Characteristics over operating free-air temperature range, VIN = 12 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT VIN current, TA = 25°C, EN = 5 V, IVIN Operating - non-switching supply current 900 1200 μA VFB = 0.8 V IVINSDN Shutdown supply current VIN current, TA = 25°C, EN = 0 V 3.6 10 μA LOGIC THRESHOLD EN high-level input voltage EN 1.6 V VEN EN low-level input voltage EN 0.6 V VFB VOLTAGE AND DISCHARGE RESISTANCE TA = 25°C, VO = 1.05 V, IO = 10 mA, Eco- 771 mV mode™ operation TA = 25°C, VO = 1.05 V, continuous mode VFBTH VFB threshold voltage 757 765 773 mV operation TA = -40 to 85°C, VO = 1.05 V, continuous 751 765 779 mV mode operation(1) IVFB VFB input current VFB = 0.8 V, TA = 25°C 0 ±0.15 μA VREG5 OUTPUT TA = 25°C, 6.0 V < VIN < 18 V, VVREG5 VREG5 output voltage 5.2 5.5 5.7 V 0 < IVREG5 < 5 mA VLN5 Line regulation 6 V < VIN < 18 V, IVREG5 = 5 mA 25 mV VLD5 Load regulation 0 mA < IVREG5 < 5 mA 100 mV IVREG5 Output current VIN = 6 V, VREG5 = 4.0 V, TA = 25°C 60 mA MOSFET High side switch resistance 25°C, VBST - SW = 5.5 V 65 m Ω RDS(on) Low side switch resistance 25°C 36 m Ω CURRENT LIMIT Iocl Current limit L out = 1.5 μH(1) 5.6 6.4 7.9 A THERMAL SHUTDOWN Shutdown temperature (1) 165 TSDN Thermal shutdown threshold °C Hysteresis (1) 35 (1) Not production tested. Copyright © 2011–2014, Texas Instruments Incorporated 5 Product Folder Links: TPS54528 |
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