Ultra low power harvester power management IC with boost charger, and autonomous power multiplexor
Product details
Parameters
Package | Pins | Size
Features
- Ultra Low-Power With High-Efficiency DC-DC Boost Charger
- Cold-Start Voltage: VIN ≥ 600 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
- Battery-Good Output Flag
- Programmable Threshold and Hysteresis
- Warn Attached Microcontrollers of Pending Loss of Power
- Can be Used to Enable or Disable System Loads
- Programmable Maximum Power Point Tracking (MPPT)
- Integrated MPPT for Optimal Energy Extraction From a Variety of Energy Harvesters
- Gate Drivers for Primary (Nonrechargeable) and Secondary (Rechargeable) Storage Element Multiplexing
- Autonomous Switching Based on VBAT_OK
- Break-Before-Make Prevents System Rail Droop
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Description
The bq25505 device is specifically designed to efficiently extract the microwatts (µW) to miliwatts (mW) of power generated from a variety of DC energy harvesting, high-impedance sources like photovoltaic (solar) or thermal electric generators (TEGs) without collapsing those sources. 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 nonrechargeable battery if the secondary battery voltage falls below the user-defined VBAT_OK threshold.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Software development
Design tools & simulation
Reference designs
Design files
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download TIDA-00488 Altium (Rev. B).zip (692KB) -
download TIDA-00488 Assembly Drawing (Rev. B).pdf (263KB) -
download TIDA-00488 BOM (Rev. B).pdf (90KB) -
download TIDA-00488 Gerber (Rev. B).zip (591KB) -
download TIDA-00488 PCB (Rev. B).pdf (2128KB)
Design files
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download TIDA-00998 BOM.pdf (98KB) -
download TIDA-00998 BOM (CT).pdf (94KB) -
download TIDA-00998 Assembly Drawing.pdf (466KB) -
download TIDA-00998 Assembly Drawing (CT).pdf (184KB) -
download TIDA-00998 PCB.pdf (1252KB) -
download TIDA-00998 PCB (CT).pdf (747KB) -
download TIDA-00998 CAD Files.zip (1561KB) -
download TIDA-00998 CAD Files (CT).zip (1351KB) -
download TIDA-00998 Gerber.zip (2632KB) -
download TIDA-00998 Gerber (CT).zip (988KB)
Design files
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download TIDA-01452 Altium (Rev. A).zip (18216KB) -
download TIDA-01452 Assembly Files (Rev. A).zip (344KB) -
download TIDA-01452 BOM (Rev. A).pdf (75KB) -
download TIDA-01452 Gerber (6 Signal Layers) (Rev. A).zip (357KB) -
download TIDA-01452 Gerber (Rev. A).zip (1899KB) -
download TIDA-01452 Layer Plots (Rev. A).zip (1466KB)
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Design files
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download TIDA-00100 PCB.pdf (1406KB) -
download TIDA-00100 Assembly Drawing.pdf (199KB) -
download TIDA-00100 Fabrication Drawing.pdf (288KB) -
download TIDA-00100 Gerber.zip (368KB) -
download TIDA-00100 BOM (Rev. A).pdf (60KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN (RGR) | 20 | View options |
Ordering & quality
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