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TPS3851H33SQDRBRQ1 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS3851H33SQDRBRQ1 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 34 page 5 TPS3851-Q1 www.ti.com SBVS286 – MARCH 2017 Product Folder Links: TPS3851-Q1 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. 6.4 Thermal Information THERMAL METRIC(1) TPS3851-Q1 UNIT DRB (VSON) 8 PINS RθJA Junction-to-ambient thermal resistance 47.7 °C/W RθJC(top) Junction-to-case (top) thermal resistance 51.5 °C/W RθJB Junction-to-board thermal resistance 22.2 °C/W ψJT Junction-to-top characterization parameter 1.3 °C/W ψJB Junction-to-board characterization parameter 22.3 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 4.3 °C/W (1) When VDD falls below VUVLO, RESET is driven low. (2) When VDD falls below VPOR, RESET and WDO are undefined. (3) During power-on, VDD must be a minimum 1.6 V for at least 300 µs before RESET correlates with VDD. 6.5 Electrical Characteristics at VITN + VHYST ≤ VDD ≤ 6.5 V over the operating temperature range of –40°C ≤ TA, T J ≤ 125°C (unless otherwise noted); the open-drain pullup resistors are 10 kΩ for each output; typical values are at TJ = 25°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT GENERAL CHARACTERISTICS VDD (1) (2) (3) Supply voltage 1.6 6.5 V IDD Supply current 10 19 µA RESET FUNCTION VPOR (2) Power-on reset voltage IRESET = 15 µA, VOL(MAX) = 0.25 V 0.8 V VUVLO (1) Undervoltage lockout voltage 1.35 V VITN Undervoltage threshold accuracy, entering RESET VDD falling VITN – 0.8% VITN + 0.8% VHYST Hysteresis voltage VDD rising 0.2% 0.5% 0.8% IMR MR pin internal pullup current VMR = 0 V 500 620 700 nA WATCHDOG FUNCTION ICWD CWD pin charge current CWD = 0.5 V 337 375 413 nA VCWD CWD pin threshold voltage 1.192 1.21 1.228 V VOL RESET, WDO output low VDD = 5 V, ISINK = 3 mA 0.4 V ID RESET, WDO output leakage current, open-drain VDD = VITN + VHYST, VRESET = VWDO = 6.5 V 1 µA VIL Low-level input voltage (MR, SET1) 0.25 V VIH High-level input voltage (MR, SET1) 0.8 V VIL(WDI) Low-level input voltage (WDI) 0.3 × VDD V VIH(WDI) High-level input voltage (WDI) 0.8 × VDD V |
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