ultra low-power boost charger
Product Folder
Order Now
Technical Documents
Tools & Software
Support & Community
bq25505
SLUSBJ3F – AUGUST 2013 – ...
Description
Product Folder
Order Now
Technical Documents
Tools & Software
Support & Community
bq25505
SLUSBJ3F – AUGUST 2013 – REVISED MARCH 2019
bq25505 ultra low-power boost charger with battery management and autonomous power multiplexer for primary battery in energy harvester applications
VRDIV VBAT_OV OK_PROG OK_HYST
Efficiency (%)
1 Features
1 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, SuperCapacitors, 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 Simplified Schematic
CSTOR
Solar + Cell
-
L1
CIN CREF
VOC_SAMP LBOOST VREF_SAMP
VSS
MPPT
...
Similar Datasheet