16-pin (RGT) package image

BQ25504RGTT ACTIVE

Ultra Low Power Boost Converter with Battery Management for Energy Harvester | Nano-Power Management

ACTIVE custom-reels CUSTOM Custom reel may be available

Pricing

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Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

BQ25504RGTR ACTIVE custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 3,000 | LARGE T&R
Inventory
Qty | Price 1ku | +

Quality information

Rating Catalog
RoHS Yes
REACH Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information

Information included:

  • RoHS
  • REACH
  • Device marking
  • Lead finish / Ball material
  • MSL rating / Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Additional manufacturing information

Information included:

  • Fab location
  • Assembly location
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins VQFN (RGT) | 16
Operating temperature range (°C) -40 to 85
Package qty | Carrier 250 | SMALL T&R

Features for the BQ25504

  • Ultra low-power with high-efficiency DC-DC boost converter/charger
    • Continuous energy harvesting from low-input sources: V IN ≥ 130 mV (Typical)
    • Ultra-low quiescent current: I Q < 330 nA (Typical)
    • Cold-start voltage: V IN ≥ 600 mV (typical)
  • Programmable dynamic maximum power point 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 rechargeable li-ion batteries, thin-film batteries, super-capacitors, or conventional capacitors
  • Battery charging and protection
    • User Programmable undervoltage and 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 or disable system loads

Description for the BQ25504

The BQ25504 device 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 device 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 (WSNs) which have stringent power and operational demands. The design of the BQ25504 starts with a DC-DC boost converter/charger that requires only microwatts of power to begin operating.

Once started, the boost converter/charger can effectively extract power from low-voltage output harvesters such as thermoelectric generators (TEGs) or single- or dual-cell solar panels. The boost converter can be started with V IN as low as 600 mV, and once started, can continue to harvest energy down to V IN = 130 mV.

The BQ25504 also implements a programmable maximum power point tracking sampling network to optimize the transfer of power into the device. Sampling the VIN_DC open-circuit voltage is programmed using external resistors, and held with an external capacitor (C REF).

For example solar cells that operate at maximum power point (MPP) of 80% of their open-circuit voltage, the resistor divider can be set to 80% of the VIN_DC voltage and the network will control the VIN_DC to operate near that sampled reference voltage. Alternatively, an external reference voltage can be provide by a MCU to produce a more complex MPPT algorithm.

The BQ25504 was designed with the flexibility to support a variety of energy storage elements. The availability of the sources from which harvesters extract their energy can often be sporadic or time-varying. Systems will typically need some type of energy storage element, such as a rechargeable battery, super capacitor, or conventional capacitor. The storage element ensures that constant power is available when needed for the systems. The storage element also allows the system to handle any peak currents that cannot directly come from the input source.

To prevent damage to a customer’s storage element, both maximum and minimum voltages are monitored against the user programmed undervoltage (UV) and overvoltage (OV) levels.

To further assist users in the strict management of their energy budgets, the BQ25504 toggles the battery good flag to signal an attached microprocessor when the voltage on an energy storage battery or capacitor has dropped below a preset critical level. This warning should trigger the shedding of load currents to prevent the system from entering an undervoltage condition. The OV, UV, and battery good thresholds are programmed independently.

All the capabilities of BQ25504 are packed into a small-footprint, 16-lead, 3-mm x 3-mm VQFN package.

Pricing

Qty Price
+

Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

BQ25504RGTR ACTIVE custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 3,000 | LARGE T&R
Inventory
Qty | Price 1ku | +

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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