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TPS3851G18SDRBR Datasheet(PDF) 11 Page - Texas Instruments |
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TPS3851G18SDRBR Datasheet(HTML) 11 Page - Texas Instruments |
11 / 31 page VDD Precision Clock State Machine Cap Control CWD GND VDD WDI MR SET1 WDO RESET Reference R1 R2 11 TPS3851 www.ti.com SBVS300 – NOVEMBER 2016 Product Folder Links: TPS3851 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated 7 Detailed Description 7.1 Overview The TPS3851 is a high-accuracy voltage supervisor with an integrated watchdog timer. This device includes a precision undervoltage supervisor with a threshold that achieves 0.8% accuracy over the specified temperature range of –40°C to +125°C. In addition, the TPS3851 includes accurate hysteresis on the threshold, making the device ideal for use with tight tolerance systems where voltage supervisors must ensure a RESET before the minimum supply tolerance of the microprocessor or system-on-a-chip (SoC) is reached. There are two options for the watchdog timing standard and extended timing. To get standard timing use the TPS3851Xyy(y)S, for extended timing use the TPS3851Xyy(y)E. 7.2 Functional Block Diagram (1) Note: R1 + R2 = 4.5 MΩ. |
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