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TPS3851G50SDRBT Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS3851G50SDRBT Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 31 page Temperature (qC) -50 -25 0 25 50 75 100 125 -0.5 -0.3 -0.1 0.1 0.3 0.5 Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Average RESET VDD GND TPS3851 1.8 V Microcontroller SET1 VDD RESET GND WDO NMI CWD MR WDI GPIO Copyright © 2016, Texas Instruments Incorporated Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. TPS3851 SBVS300 – NOVEMBER 2016 TPS3851 Precision Voltage Supervisor with Integrated Watchdog Timer 1 1 Features 1 • 0.8% Voltage Threshold Accuracy • Precision Undervoltage Monitoring: – Supports Common Rails from 1.8 V to 5.0 V – 4% and 7% Undervoltage Thresholds Available – 0.5% Hysteresis • Factory-Programmed Precision Watchdog and Reset Timers: – ±15% Accurate WDT and RST Delays • Watchdog Disable Feature • User-Programmable Watchdog Timeout • Input Voltage Range: VDD = 1.6 V to 6.5 V • Low Quiescent Current: IDD = 10 µA (typ) • Open-Drain Outputs • Manual Reset Input (MR) • Available in a Small 3-mm × 3-mm, 8-Pin VSON Package • Junction Operating Temperature Range: –40°C to +125°C 2 Applications • Safety-Critical Applications • Telematics Control Units • FPGAs and ASICs • Microcontrollers and DSPs 3 Description The TPS3851 combines a precision voltage supervisor with a programmable watchdog timer. The TPS3851 comparator achieves a 0.8% accuracy (–40°C to +125°C) for the undervoltage (VITN) threshold. The TPS3851 also includes accurate hysteresis on the undervoltage threshold making the device ideal for use with tight tolerance systems. The supervisor RESET delay features a 15% accuracy, high-precision delay timing. The TPS3851 includes a programmable watchdog timer for a wide variety of applications. The dedicated watchdog output (WDO) enables increased resolution to help determine the nature of fault conditions. The watchdog timeouts can be programmed either by an external capacitor, or by factory-programmed default delay settings. The watchdog can be disabled via logic pins to avoid undesired watchdog timeouts during the development process. The TPS3851 is available in a small 3.00-mm × 3.00-mm, 8-pin VSON package. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS3851 VSON (8) 3.00 mm × 3.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Fully Integrated Microcontroller Supervisory Circuit Undervoltage Threshold (VITN) Accuracy vs Temperature |
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