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TPS62745DSST Datasheet(PDF) 6 Page - Texas Instruments |
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TPS62745DSST Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 34 page  TPS62745, TPS627451 SLVSC68A – JUNE 2015 – REVISED JUNE 2015 www.ti.com 7.4 Thermal Information TPS62745 THERMAL METRIC(1) DSS UNIT 12 PINS RθJA Junction-to-ambient thermal resistance 61.8 °C/W RθJC(top) Junction-to-case (top) thermal resistance 70.9 °C/W RθJB Junction-to-board thermal resistance 25.7 °C/W ψJT Junction-to-top characterization parameter 1.9 °C/W ψJB Junction-to-board characterization parameter 25.7 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 7.2 °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 VIN = 6 V, TJ = –40°C to 125°C typical values are at TJ = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOUT + 0.7 V ≤ VIN ≤ 10 V ; min 3.3 V, whichever VIN Input voltage range 3.3 10 V value is higher EN = VIN, device not switching; IOUT = 0 µA; IQ Operating quiescent current 400 1960 nA VOUT = 2 V; TJ = –40°C to 85°C EN = GND, shutdown current into VIN; 130 1200 TJ = -40°C to 85°C ISD Shutdown current nA EN = GND, shutdown current into VIN; TJ = 60°C 830 VTH_UVLO+ Rising VIN; TJ = –40°C to 85°C 3.1 3.3 Undervoltage lockout V threshold VTH_UVLO- Falling VIN; TJ = –40°C to 85°C 2.9 3.1 INPUTS (EN, EN_VIN_SW, VSEL1-4) VIH TH High level input voltage VTH_UVLO- ≤ VIN ≤ 10 V 1.2 V VIL TH Low level input voltage VTH_UVLO- ≤ VIN ≤ 10 V 0.35 V TJ = 25°C 10 Input bias current; except EN IIN TJ = 60°C 20 nA pin TJ = –40°C to 85°C 50 TJ = 25°C 20 IIN Input bias current for EN pin TJ = 60°C 40 nA TJ = –40°C to 85°C 100 POWER SWITCHES High side MOSFET on- 0.6 0.98 resistance RDS(ON) VIN = 4 V, I = 140 mA Ω Low side MOSFET on- 0.5 0.85 resistance High side MOSFET DC switch 480 600 720 current limit ILIMF 3.6 V ≤ VIN ≤ 10 V; device not in soft start mA Low side MOSFET DC switch 600 current limit 6 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Product Folder Links: TPS62745 TPS627451 |
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