Product details

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 2.6, 2.9, 4.5 Features Ease-of-use Reset threshold accuracy (%) 2.2 Output driver type/reset output Active-low, Push-pull Time delay (ms) 200 Rating HiRel Enhanced Product Watchdog timer WDI (sec) None Operating temperature range (C) -55 to 125
Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 2.6, 2.9, 4.5 Features Ease-of-use Reset threshold accuracy (%) 2.2 Output driver type/reset output Active-low, Push-pull Time delay (ms) 200 Rating HiRel Enhanced Product Watchdog timer WDI (sec) None Operating temperature range (C) -55 to 125
SOT-23 (DBV) 3 5 mm² 1.60 x 2.90
  • Controlled Baseline
    • One Assembly Site
    • One Test Site
    • One Fabrication Site
  • Extended Temperature Performance of -55°C to 125°C
  • Enhanced Diminishing Manufacturing Sources (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree(1)
  • 3-Pin SOT-23 Package
  • Supply Current of 9 µA (Typical)
  • Precision Supply Voltage Monitor 2.5 V, 3 V, 3.3 V, 5 V
  • Power-On Reset Generator With Fixed Delay Time of 200 ms
  • Pin-for-Pin Compatible With MAX 809

(1) Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.

  • Controlled Baseline
    • One Assembly Site
    • One Test Site
    • One Fabrication Site
  • Extended Temperature Performance of -55°C to 125°C
  • Enhanced Diminishing Manufacturing Sources (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree(1)
  • 3-Pin SOT-23 Package
  • Supply Current of 9 µA (Typical)
  • Precision Supply Voltage Monitor 2.5 V, 3 V, 3.3 V, 5 V
  • Power-On Reset Generator With Fixed Delay Time of 200 ms
  • Pin-for-Pin Compatible With MAX 809

(1) Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.

The TPS3809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for DSPs and processor-based systems.

During power-on, RESET is asserted when the supply voltage VDD becomes higher 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 has risen above the VIT. When the supply voltage drops below the VIT, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense VIT set by an internal voltage divider.

The product spectrum 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 TPS3809 devices are characterized for operation over a temperature range of -55°C to 125°C.

The TPS3809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for DSPs and processor-based systems.

During power-on, RESET is asserted when the supply voltage VDD becomes higher 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 has risen above the VIT. When the supply voltage drops below the VIT, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense VIT set by an internal voltage divider.

The product spectrum 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 TPS3809 devices are characterized for operation over a temperature range of -55°C to 125°C.

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 5
Type Title Date
* Data sheet TPS3809L30-EP, TPS3809K33-EP, TPS3809I50-EP datasheet (Rev. A) 02 Nov 2006
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Design guide TIDA-00141 Overview 07 May 2014
Test report TIDA-00141 Test Results 09 Apr 2014

Design & development

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

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Schematic

TIDA-00141 Design File

TIDC360.ZIP (884 KB)
Schematic

TIDA-00141 Schematic and Block Diagram

TIDR508.PDF (337 KB)
Bill of materials (BOM)

TIDA-00141 BOM

TIDR509.PDF (118 KB)
Gerber file

TIDA-00141 Gerber

TIDC359.ZIP (267 KB)
Package Pins Download
SOT-23 (DBV) 3 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos