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BQ25505 Datasheet(PDF) 1 Page - Texas Instruments

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Part # BQ25505
Description  Ultra Low Power Boost Charger with Battery Management and Autonomous Power
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ25505 Datasheet(HTML) 1 Page - Texas Instruments

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bq25505
www.ti.com
SLUSBJ3B – AUGUST 2013 – REVISED JANUARY 2014
Ultra Low Power Boost Charger with Battery Management and Autonomous Power
Multiplexor for Primary Battery in Energy Harvester Applications
Check for Samples: bq25505
1
FEATURES
Ultra Low Power With High Efficiency DC/DC
Integrated MPPT for optimal energy
Boost Charger
extraction from a variety of energy
harvesters
Cold-Start Voltage: VIN ≥ 330 mV
Gate Drivers for Primary (Non-rechargeable)
Continuous Energy Harvesting From Input
and Secondary (rechargeable) Storage
Sources as low as 100 mV
Element Multiplexing
Ultra Low Quiescent Current of 325 nA
Autonomous switching based on VBAT_OK
Input Voltage Regulation Prevents
Break-before-make prevents system rail
Collapsing High Impedance Input Sources
droop
Ship Mode with < 5 nA From Battery
Energy Storage
APPLICATIONS
Energy can be Stored to Re-Chargeable Li-
Energy Harvesting
ion Batteries, Thin-film Batteries, Super-
Solar Charger
Capacitors, or Conventional Capacitors
Thermal Electric Generator (TEG) Harvesting
Battery Charging and Protection
Wireless Sensor Networks (WSN)
Internally Set Undervoltage Level
Industrial Monitoring
User Programmable Overvoltage Level
Environmental Monitoring
Battery Good Output Flag
Bridge and Structural Health Monitoring (SHM)
Programmable Threshold and Hysteresis
Smart Building Controls
Warn Attached Microcontrollers of Pending
Portable and Wearable Health Devices
Loss of Power
Entertainment System Remote Controls
Can be Used to Enable/Disable System
Loads
Programmable Maximum Power Point Tracking
(MPPT)
DESCRIPTION
The bq25505 is the first of a new family of intelligent integrated energy harvesting Nano-Power management
solutions that are well suited for meeting the special needs of ultra low power applications. The product is
specifically designed to efficiently acquire and manage the microwatts (µW) to miliwatts (mW) of power
generated from a variety of DC sources like photovoltaic (solar) or thermal electric generators (TEGs). The
bq25505 is a highly efficient boost charger targeted toward products and systems, such as wireless sensor
networks (WSN) which have stringent power and operational demands. The design of the bq25505 starts with a
DCDC boost charger that requires only microwatts of power to begin operating.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2013–2014, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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