Texas Instruments

bq25505 PMICs with Boost Charger and Autonomous Power Multiplexor

Texas Instruments offers its bq25505, ultra-low power harvester PMICs with boost charger and autonomous power multiplexor for the primary battery in energy harvester applications

Image of Texas Instruments' bq25505 PMICs with Boost Charger and Autonomous Power Multiplexor Texas Instruments' bq25505 devices are specifically designed to efficiently extract the microwatts (µW) to miliwatts (mW) of power generated from a variety of DC energy harvesting, high-impedance sources without collapsing them. These sources include photovoltaic (solar) or thermal electric generators (TEGs). The battery-management features of the bq25505 ensure that a secondary rechargeable battery is not overcharged by this extracted power, with voltage boosted nor depleted beyond safe limits by a system load. The integrated multiplexer gate drivers autonomously switch the system load to a primary, non-rechargeable battery if the secondary battery voltage falls below the user-defined VBAT_OK threshold.

Features
  • Ultra-low-power with high-efficiency DC-DC boost charger
    • Cold-start voltage: VIN ≥ 330 mV
    • Continuous energy harvesting from input sources as low as 100 mV
    • Ultra-low quiescent current of 325 nA
    • Input voltage regulation prevents collapsing high-impedance input sources
    • Ship mode with < 5 nA from battery
  • Energy storage
    • Energy can be stored to rechargeable Li-Ion batteries, thin-film batteries, super capacitors, or conventional capacitors
  • Battery charging and protection
    • Internally set undervoltage level
    • User-programmable overvoltage level

bq25505 PMICs with Boost Charger and Autonomous Power Multiplexor

ImageManufacturer Part NumberDescriptionVoltage - SupplyOperating TemperatureAvailable QuantityPriceView Details
IC ENERGY HARV CTRLR BATT 20VQFNBQ25505RGRRIC ENERGY HARV CTRLR BATT 20VQFN0.12V ~ 4V-40°C ~ 85°C5203 - Immediate$4.70View Details
IC ENERGY HARV CTRLR BATT 20VQFNBQ25505RGRTIC ENERGY HARV CTRLR BATT 20VQFN0.12V ~ 4V-40°C ~ 85°C192 - Immediate$5.54View Details

Evaluation Board

ImageManufacturer Part NumberDescriptionFunctionUtilized IC / PartAvailable QuantityPriceView Details
EVAL BOARD FOR BQ25505BQ25505EVM-218EVAL BOARD FOR BQ25505Energy HarvestingBQ255050 - Immediate$53.90View Details
Published: 2016-06-08

Related Videos

Understanding power density – increased thermal performance
Understanding power density – increased thermal performance

Publish Date: 2022-08-29

Wireless LED Display with Bluetooth - Another Geek Moment
Wireless LED Display with Bluetooth - Another Geek Moment

Publish Date: 2014-10-03

Related Product Highlight

TPL5110 Low-Power Timer Breakout Adafruit’s Power Timer breakout is a stand-alone board that utilizes the Texas Instruments TPL5110 to turn any electronics into a low-power project.
HDC1010 Digital Humidity Sensors TI's HDC1010 offers a sensing element placed on the bottom part of the device which makes it robust against dirt, dust, and other environmental contaminants.
bq25100 Li-Ion Battery Chargers TI’s bq25100 Li-Ion battery chargers are designed for fitness accessories, smart watches, Bluetooth® headsets, and low-power handheld devices.

Related Articles and Blogs

How to Narrow Down Connectivity Options for Your Next Design To help determine the right connection, decide between wired or wireless, standard-based or proprietary, and the type of network topology support needed.
A Brief Guide to What Matters in Short-Range Wireless Technologies Wirelessly enabling a new product design is a good idea, but the interface needs to be chosen carefully even as vendors rally around protocols such as Matter.
Use an Energy Harvesting Microcontroller to Eliminate IoT Battery Replacement A microcontroller with an integrated energy harvesting controller offers a simple way to extend battery life and eliminate battery replacement in IoT devices.