Low quiescent current (IQ)

Extend battery and shelf life without compromising system performance

Why does quiescent current matter?

In battery-operated systems, the need to achieve high efficiency at no- or light-load conditions requires power solutions to tightly regulate the output while maintaining ultra-low supply current. With TI’s portfolio of ultra-low IQ technologies and products, you can maximize your battery run time and enable low power consumption in your next design. 

Overcoming Low-Iq Challenges in Low-Power Applications

Designers of ultra-low-power electronics make constant trade-offs between higher performance and longer battery life. In this paper, we examine solutions to reduce IQ and address the fundamental challenge of how to achieve higher performance for longer periods of time.

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Benefits of TI technologies for low IQ

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Low, always-on power

Long battery run times, enabled by ultra-low leakage process technologies and novel control topologies.

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Fast response times

Fast wake-up comparators and zero-IQ feedback control enable fast dynamic responses without compromising low power consumption.

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Reduced form factor

Area reduction techniques for resistors and capacitors facilitate integration into space-constrained applications while not affecting quiescent power.

Three ways low Iq technologies extend battery life 

Minimizing quiescent current (IQ) is critical to reducing power consumption and extending battery life. Read this article to learn three ways innovative low IQ technologies can help extend battery and shelf life without compromising performance.
 

Featured low quiescent current products

Battery charger ICs BQ25171-Q1 ACTIVE Automotive, 800-mA linear battery charger for 1- to 2-cell Li-ion, LiFePO4, and 1- to 6-cell NiMH
NEW AC/DC & DC/DC converters (integrated FET) TPS61299 ACTIVE 95-nA low IQ 5.5-V boost converter with input current limit and fast transient performance
NEW AC/DC & DC/DC converters (integrated FET) TPS62843 ACTIVE 1.8-V to 5.5-V input, 600-mA ultra-low IQ step-down converter
Supervisor & reset ICs TPS37-Q1 ACTIVE Automotive 65-V window supervisor with ultra-low quiescent current and time-delay function
Linear & low-dropout (LDO) regulators TPS7A02 ACTIVE 200mA, nanopower-IQ (25 nA), low-dropout (LDO) voltage regulator with enable
Series voltage references REF35 ACTIVE 650-nA quiescent current, 12-ppm/°C drift, ultra-low-power precision voltage reference

Featured reference designs for low quiescent current

Reference design
Backup battery reference design with preboost, charger and 1S Li-ion fuel gauge

This design shows an automotive backup battery using a 1S Li-ion battery for emergency operation. The primary power input is rated for 6-V to 18-V nominal (2.7-V to 36-V peak) to comply with 12-V automotive requirements. The secondary power input has a fuel gauge to monitor a single cell Li-ion (...)

Reference design
Ultra-low Standby Power Reference Design for Wireless Earbud Battery

New, completely wireless earbuds are charged by the battery inside their carrying case—a unique design that requires small solution sizes and efficient power components. Additionally, the large demands in this market are increasing the need to deliver equivalent functionality more (...)

Reference design
Automotive Bluetooth® Low Energy car access satellite node reference design
This reference design is intended for Passive Entry Passive Start (PEPS) car access systems that utilize Bluetooth® Low Energy (BLE) technology to determine the location of a key fob. The design exhibits how a vehicle BLE satellite node can be implemented to calculate the angle of arrival (...)

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