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Supervisor & reset ICs

TLV809

ACTIVE

3-pin voltage supervisor (reset IC) with active-low, push-pull reset

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Data sheet

TLV809

ACTIVE
Data sheet Order now

Product details

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.25, 2.64, 2.93, 4.55 Features Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 2, 2.2, 2.3 Iq (typ) (mA) 0.009 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 200 Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.25, 2.64, 2.93, 4.55 Features Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 2, 2.2, 2.3 Iq (typ) (mA) 0.009 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 200 Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
SOT-23 (DBV) 3 8.12 mm² 2.9 x 2.8 SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Precision supply voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V
  • Power-on reset generator with a fixed delay time of 200 ms
  • Supply current: 9 µA (typical)
  • Temperature range: –40°C to +85°C
  • 3-Pin SOT-23 package
  • Pin-for-pin compatible with the MAX809
  • Precision supply voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V
  • Power-on reset generator with a fixed delay time of 200 ms
  • Supply current: 9 µA (typical)
  • Temperature range: –40°C to +85°C
  • 3-Pin SOT-23 package
  • Pin-for-pin compatible with the MAX809

The TLV809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for digital signal processors (DSPs) and processor-based systems. The newer TLV809E device is a pin-to-pin compatible alternative.

During power-on, RESET is asserted when the supply voltage (VDD) becomes greater than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage, VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time (td(typ) = 200 ms) starts after VDD rises above the threshold voltage, VIT. When the supply voltage drops below the VIT threshold voltage, the output becomes active (low) again. No external components are required. All devices in this family have a fixed sense-threshold voltage (VIT) set by an internal voltage divider.

This product family is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a 3-pin SOT-23 package. The TLV809 devices are characterized for operation over a temperature range of –40°C to +85°C.

The TLV809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for digital signal processors (DSPs) and processor-based systems. The newer TLV809E device is a pin-to-pin compatible alternative.

During power-on, RESET is asserted when the supply voltage (VDD) becomes greater than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage, VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time (td(typ) = 200 ms) starts after VDD rises above the threshold voltage, VIT. When the supply voltage drops below the VIT threshold voltage, the output becomes active (low) again. No external components are required. All devices in this family have a fixed sense-threshold voltage (VIT) set by an internal voltage divider.

This product family is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a 3-pin SOT-23 package. The TLV809 devices are characterized for operation over a temperature range of –40°C to +85°C.
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Technical documentation

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Type Title Date
* Data sheet TLV809 3-Pin Supply Voltage Supervisor datasheet (Rev. F) 30 Dec 2020
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17 Mar 2020
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 28 Feb 2020
Technical article Using low-Iq voltage supervisors to extend battery life in handheld electronics PDF | HTML 27 Sep 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
User guide TIDA-00274 Sensorless 3-Phase BLDC Drive 16 Jul 2014
Test report TIDA-00274 Test Results 16 Jul 2014

Design & development

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Evaluation board

TLV809KEVM-019 — TLV809 evaluation module for low-power 3-pin voltage supervisor (reset IC)

The TLV809KEVM-019 evaluation module (EVM) is a fully-assembled and tested circuit that lets you easily evaluate the TLV809K33 supply voltage supervisor (SVS) at a supply voltage of 3.3 V. The TLV809K33 device is an active-low reset SVS. The output (reset) of the EVM is either high (...)
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Supervisor & reset ICs
TLV809 — 3-pin voltage supervisor (reset IC) with active-low, push-pull reset
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TIDA-00274 BOM

TIDR893.PDF (44 KB)
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TIDR894.ZIP (269 KB)
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TIDA-00274 Gerber

TIDC516.ZIP (346 KB)
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TIDA-00274 Schematic

TIDR892.PDF (61 KB)
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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

TIDA-00274 — Cost-effective 3-phase Brushless DC Drive for Sensor-less Trapezoidal Control Reference Design

This reference evaluation module, featuring DRV8313, 3-phase driver with integrated MOSFETs and MSP430G2553 MCU, provides a cost effective sensor-less solution to run of 3-phase BLDC motor in trapezoidal commutation. Reference design software comes with easy to use GUI for quick evaluation.  (...)
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