Low-Cost, Flexible Voltage Supervisor and Battery Tester Reference Design
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical documentation

Support & Training

Order Now

See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document


This is a low-cost, flexible voltage supervisor that uses a voltage reference in order to test the voltage of a battery. This solution can also be used as a voltage rail monitor for many applications that require accurate power delivery with multiple rails. With TI's ultra-low power voltage references, the total system power consumption is reduced, while maintaining a low BOM cost. Testing and displaying the battery voltage provides an example of how easily this can be designed and implemented in comparable applications.

  • The ATL431 shunt regulator allows for voltage regulation with minimal current consumption (60 µA)
  • TLV61225 boost converter enables the entire circuit to be powered from a AA battery (0.8 V to 3.3 V Input)
  • User Configurable resistor ladder creates customizable number of voltage rails for supervision
  • Low Cost to design for customized voltage supervision
  • Footprint can fit on the backside of a single AA battery voltage holder
  • No Firmware or Software Needed

See the Important Notice and Disclaimer covering reference designs and other TI resources.


Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Test Data

Get results faster with test and simulation data that's been verified.

Download Test Data

Design Files

Download ready-to-use system files to speed your design process. Get Viewer.

Download Design Files

TI Devices (5)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL431  2.5-V low-IQ adjustable precision shunt regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
LM339  Quad differential comparator  Amplifiers  Sample & Buy Not Available
TLV61225  Single cell 3.3V output voltage high efficient step-up converter in 6 pin SC-70 package  Step-up (boost) regulators  Sample & Buy Not Available
TPD1E10B06  12-pF, ±5.5V, ±30-kV ESD protection diode with 6-A 8/20-uS surge in 0402 Package  Circuit protection ICs  Sample & Buy View Design Kits & Evaluation Modules
TPS27081A  8-V, 3-A, 44-mΩ load switch with adj. rise time  Power switches  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ATL431 Download Download
LM339 Download Download
Download Download
Download Download
Download Download
Download Download
TLV61225 Download Download
TPD1E10B06 Download Download
TPS27081A Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Technical documentation

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guide (1)
Title Type Size (KB) Date
PDF 1551 31 Aug 2015
Design files (6)
Title Type Size (KB) Date
ZIP 291 24 Sep 2015
ZIP 1627 24 Sep 2015
PDF 268 24 Sep 2015
PDF 76 24 Sep 2015
PDF 197 24 Sep 2015
PDF 312 24 Sep 2015

Support & training

TI E2E™ forums with technical support from TI engineers

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective 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 visit our Support page.

Technical articles