BQ24650EVM-639: 5 ~ 28V, 8A Solar Charger
The bq24650 offers a constant-frequency, synchronous PWM controller with high-accuracy current and voltage regulation, charge preconditioning, charge termination, and charge status monitoring.
The bq24650 changes the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches one-tenth of the fast charge rate. A programmable fast-charge timer provides a safety backup. The precharge timer is fixed at 30 minutes. The bq24650 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low, quiescent-current sleep mode when the input voltage falls below the battery voltage.
The bq24650 supports the battery from 2.1 V to 26 V with VFB set to a 2.1-V feedback reference. The charge current is programmed by selecting an appropriate sense resistor. The bq24650 is available in a 16-pin, 3.5x3.5 mm2, thin QFN package.
|Sub-Category||Solar Battery Chargers|
|Eval Board Part Number||296-28320-ND|
|Eval Board Supplier||Texas Instruments|
Normally In Stock
|Application / Target Market||
Solar Powered Back-up
5 ~ 28 V
Lithium Ion, Li-Ion
Adj. 2.1 ~ 26V (Preset to 12.6 V)
2 A Typical (0 ~ 8 A)
Bad Battery Detection
Cell Temperature Monitoring
Current Limit (Adj. or Fixed)
|Component Count + Extras||
44 + 35
|Main I.C. Base Part||
Up to 8A