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TPS386000-Q1 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS386000-Q1 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 25 page  TPS386000-Q1 www.ti.com SBVS149 – SEPTEMBER 2010 ELECTRICAL CHARACTERISTICS Over the operating temperature range of TJ = –40°C to +125°C, 1.8V < VVCC < 6.5V, RRESETn (n = 1, 2, 3, 4) = 100kΩ to VVCC, CRESETn (n = 1, 2, 3, 4L, 4H) = 50pF to GND, RWDO = 100kΩ to VVCC, CWDO = 50pF to GND, VMR = 100kΩ to VVCC, WDI = GND, and CTn (n = 1, 2, 3, 4) = open, unless otherwise noted. Typical values are at TJ = +25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VVCC Input supply range 1.8 6.5 V VVCC = 3.3V, RESETn or RESETn not asserted, WDI toggling(1), no output load, 11 19 mA and VREF open IVCC Supply current (current into VCC pin) VVCC = 6.5V, RESETn or RESETn not asserted, WDI toggling(1), no output load, 13 22 mA and VREF open Power-up reset voltage(2)(3) VOL (max) = 0.2V, IRESETn = 15mA 0.9 V VITN Negative-going input threshold voltage SENSE1, SENSE2, SENSE3, SENSE4L 396 400 404 mV VITP Positive-going input threshold voltage SENSE4H 396 400 404 mV VHYSN Hysteresis (positive-going) on VITN SENSE1, SENSE2, SENSE3, SENSE4L 3.5 10 mV VHYSP Hysteresis (negative-going) on VITP SENSE4H 3.5 10 mV ISENSE Input current at SENSEm pin VSENSEm = 0.42V –25 ±1 +25 nA CT1 CCT1 > 220pF, VCT1 = 0.5V (4) 245 300 355 nA CTn pin charging ICT current CT2, CT3, CT4 CCTn > 220pF, VCTn = 0.5V (4) 235 300 365 nA VTH(CTn) CTn pin threshold CCTn > 220pF 1.180 1.238 1.299 V VIL MR and WDI logic low input 0 0.3VVCC V VIH MR and WDI logic high input 0.7VVCC V IOL = 1mA 0.4 V Low-level RESETn or RESETn output SENSEn = 0V, 1.3V < VVCC < 1.8V, voltage VOL 0.3 V IOL = 0.4mA (2) Low-level WDO output voltage IOL = 1mA 0.4 V RESETn, RESETn, WDO, and WDO VRESETn = 6.5V, RESETn, RESETn, WDO, ILKG –300 300 nA leakage current and WDO are logic high VREF Reference voltage output 1mA < IVREF < 0.2mA (source only, no sink) 1.18 1.20 1.22 V CIN Input pin capacitance CTn: 0V to VVCC, other pins: 0V to 6.5V 5 pF SENSEm: 1.05VITN → 0.95VITN or 4 ms Input pulse width to SENSEm and MR 0.95V ITP → 1.05VITP tW pins MR: 0.7VCC → 0.3VVCC 1 ns CTn = open 14 20 24 ms tD RESETn or RESETn delay time CTn = VVCC 225 300 375 ms Start from RESET1 or RESET1 release or tWDT Watchdog timer timeout period 450 600 750 ms last WDI transition (1) Toggling WDI for a period less than tWDT negatively affects IVCC. (2) These specifications are beyond the recommended VVCC range, and only define RESETn or RESETn output performance during VCC ramp up. (3) The lowest supply voltage (VVCC) at which RESETn or RESETn becomes active; tRISE(VCC) ≥ 15ms/V. (4) CTn (where n = 1, 2, 3, or 4) are constant current charging sources working from a range of 0V to VTH(CTn), and the device is tested at VCTn = 0.5V. For ICT performance between 0V and VTH(CTn), see Figure 23. Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TPS386000-Q1 |
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