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
Parts Include :
ATL431 2.5V Low Iq Adjustable Precision Shunt Regulator
LM339 Quad Differential Comparator
TLV61225 Single Cell High Efficient Step-Up Converter in 6 pin SC-70 Package
TPD1E10B06 Single Channel ESD in 0402 package with 10pF Capacitance and 6V Breakdown
TPS27081A 1.2V – 8V, 3A PFET High Side Load Switch w/ Level Shift & Adj Slew Rate Control
Learn more by downloading the reference design below
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