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Product details

Parameters

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 8.5, 10.8 Features Active-low enable, Manual reset, Ease-of-use, Wide input voltage Reset threshold accuracy (%) 2.5 Output driver type/reset output Active-low, Push-pull Time delay (ms) 5 Rating Catalog Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 105 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Supervisor & reset ICs

Features

  • Ultralow Supply Current: 380 nA
  • Wide Supply Voltage Range: 4.5 V to 18 V
  • High Threshold Accuracy: ±2.5%
  • Internal Hysteresis
  • Push-Pull Output
  • 20-ms (max) Delay Timing
  • Factory-Trimmed, Fixed-Voltage Thresholds
  • Specified Operating Temperature Range:
    –40°C to +85°C
  • Operational from –40°C to +105°C
  • Package: 5-Pin SOT
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Description

The TPS3847 family consists of wide operating voltage, ultralow-current devices that monitor the voltage at the supply pin. The device asserts an active-low reset signal whenever the VCC supply voltage drops below the factory-trimmed reset threshold voltage. The reset output remains asserted for 20 ms (max) after the VCC voltage rises above the threshold voltage.

The ultralow current consumption of 380 nA combined with 18-V capability makes the TPS3847 ideal for use in low-power and portable applications.

The TPS3847 features precision, factory-trimmed threshold voltages and extremely low-power operation. The TPS3847 is available in an industry-standard, 5-pin, SOT package.

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TPS3840 ACTIVE Nanopower high-input voltage supervisor with manual reset and programmable-reset time delay TPS3840 offers programmable time delay for lower threshold voltage options (1.6 V to 4.9 V).

Technical documentation

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Type Title Date
* Data sheet TPS3847 18-V, 380-nA Voltage Monitor datasheet (Rev. A) Mar. 04, 2015
Technical article What’s not in the power MOSFET data sheet part 2: voltage-dependent leakage currents Jul. 23, 2021
Technical article Monitoring 12-V automotive battery systems: Load-dump, cold-crank and false-reset management Mar. 24, 2021
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) Feb. 28, 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Technical article How to implement voltage monitoring Jul. 22, 2015
Technical article Increase battery life with low voltage monitoring Oct. 28, 2014
User guide TPS3847085EVM-577 User's Guide Aug. 04, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
20
Description

The TPS3847085EVM-577 is a fully assembled and tested Evaluation Module (EVM) for evaluating the TPS3847085 supervisor. The EVM circuit is configured to be a reference design for engineering applications. Connectors and test points are provided for convenience.

Features
  • Ultra-Low Supply Current: 380nA
  • Wide Supply Voltage Range: 4.5V to 18V
  • High threshold accuracy : 2.5%
  • Internal Hysteresis: 10%*Vt
  • Push Pull output, 15ms delay timing
  • Factory trimmed fixed voltage thresholds
  • Temperature Range: -40C to +85C
  • Packages: 2x2mm SON , SOT23

Design tools & simulation

SIMULATION MODEL Download
SBVM576.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SBVM577.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SLUM450.ZIP (38 KB) - PSpice Model
SIMULATION MODEL Download
SLVMAC9.ZIP (45 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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