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Product details

Parameters

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 3.07, 3.17 Features Active-low enable, Manual reset, Watchdog disable, Watchdog timer, Window watchdog Reset threshold accuracy (%) 0.8 Output driver type/reset output Active-low, Open-drain Time delay (ms) 200 Rating Catalog Watchdog timer WDI (sec) Programmable Operating temperature range (C) -40 to 125 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

VSON (DRB) 8 9 mm² 3 x 3 open-in-new Find other Supervisor & reset ICs

Features

  • VDD Input Voltage Range: 1.6 V to 6.5 V
  • 0.8% Voltage Threshold Accuracy
  • Low Supply Current: IDD = 10 µA (typical)
  • User-Programmable Watchdog Timeout
  • Factory Programmed Precision Watchdog and Reset Timers:
    • ±15% Accurate WDT and RST Delays
  • Open-Drain Outputs
  • Manual Reset Input (MR)
  • Precision Undervoltage Monitoring
    • Supports Common Rails from 1.8 V to 5 V
    • 4% and 7% Thresholds Available
    • 0.5% Hysteresis
  • Watchdog Disable Feature
  • Available in a Small 3-mm × 3-mm, 8-Pin VSON Package
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Description

The TPS3852 is a precision voltage supervisor with an integrated window watchdog timer. The TPS3852 includes a precision undervoltage supervisor with an undervoltage threshold (VITN) that achieves 0.8% accuracy over the specified temperature range of –40°C to +125°C. In addition, the TPS3852 includes accurate hysteresis making the device ideal for use with tight tolerance systems. The supervisor RESET delay features a 15% accuracy, high-precision delay timer.

The TPS3852 includes a programmable window 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 to avoid undesired watchdog timeouts during the development process.

The TPS3852 is available in a small 3.00-mm × 3.00-mm, 8-pin VSON package.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS3852 Precision Voltage Supervisor with Programmable Window Watchdog Timer datasheet Nov. 21, 2016
Application notes Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) Mar. 17, 2020
White papers Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Technical articles Exploring watchdog timer applications Feb. 02, 2017
Technical articles Don’t underestimate the power of an LDO Oct. 19, 2013
Technical articles How to optimize your DSP power budget Oct. 03, 2013
Technical articles "X" Marks the spot - 7 Treasures in a pirate engineer's treasure chest Sep. 19, 2013

Design & development

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Design tools & simulation

SIMULATION MODELS Download
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SBVM660.ZIP (70 KB) - PSpice Model
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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Reference designs

REFERENCE DESIGNS Download
TUV-assessed digital input reference design for IEC 61508 (SIL-2)
TIDA-010049 — This 8-channel, group-isolated, digital input module reference design, focuses on applications with the need for industrial functional safety. This design has diagnostics implemented to help detect both permanent and transient random hardware faults. The concept of this input module has been (...)
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SON (DRB) 8 View options

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