DESCRIPTION
The bq25504 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. The bq25504 is the first device of its kind to implement a highly efficient boost converter/charger targeted toward products and systems, such as wireless sensor networks (WSN) which have stringent power and operational demands. The design of the bq25504 starts with a DCDC boost converter/charger that requires only microwatts of power to begin operating.

FEATURES
• Ultra Low Power With High Efficiency DC/DC Boost Converter/Charger
    – Continuous Energy Harvesting From Low Input Sources: VIN ≥ 80 mV(Typical)
    – Ultra Low Quiescent Current: IQ < 330 nA (Typical)
    – Cold-Start Voltage: VIN ≥ 330 mV (Typical)
• Programmable Dynamic Maximum Power Poin Tracking (MPPT)
    – Integrated Dynamic Maximum Power Point Tracking for Optimal Energy Extraction From a Variety of Energy Generation Sources
    – Input Voltage Regulation Prevents Collapsing Input Source
• Energy Storage
    – Energy can be Stored to Re-Chargeable Li-ion Batteries, Thin-film Batteries, Super-Capacitors, or Conventional Capacitors
• Battery Charging and Protection
    – User Programmable Undervoltage / Overvoltage Levels
    – On-Chip Temperature Sensor with Programmable Overtemperature Shutoff
• Battery Status Output
    – Battery Good Output Pin
    – Programmable Threshold and Hysteresis
    – Warn Attached Microcontrollers of Pending Loss of Power
    – Can be Used to Enable/Disable System Loads

APPLICATIONS
• Energy Harvesting
• Solar Charger
• Thermal Electric Generator (TEG) Harvesting
• Wireless Sensor Networks (WSN)
• Industrial Monitoring
• Environmental Monitoring
• Bridge / Structural Health Monitoring (SHM)
• Smart Building Controls
• Portable and Wearable Health Devices
• Entertainment System Remote Controls