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Low-Cost, Flexible Voltage Supervisor and Battery Tester Reference Design
TIDA-00670
ACTIVE
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Key Document

Description

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.

Features

 

• 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

• 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

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Design Files

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TI Devices (5)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL431  2.5V 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)  Sample & Buy Not Available
TPD1E10B06  Single-channel ESD in 0402 package with 10pF capacitance and 6V breakdown  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
TPS27081A  1.2V - 8V, 3A PFET high side load switch w/ level shift & adj slew rate control  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

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Technical Documents

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

User guides (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

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