0
ACTIVE
Rating |
Catalog |
Number of series cells |
1, 2, 3, 4, 5, 6 |
Cell chemistry |
Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 |
Charge current (max) (A) |
10 |
Features |
BAT temp thermistor monitoring (hot/cold profile), Input OVP, Solar input/MPPT, VINDPM (Input voltage threshold to maximize adaptor power) |
Vin (min) (V) |
5 |
Vin (max) (V) |
28 |
Absolute max Vin (max) (V) |
33 |
Control topology |
Switch-Mode Buck |
Battery charge voltage (min) (V) |
2.1 |
Battery charge voltage (max) (V) |
26 |
Control interface |
Standalone (RC-Settable) |
Operating temperature range (°C) |
-40 to 85 |
VQFN (RVA)-16-12.25 mm² 3.5 x 3.5
The BQ24650 device is a highly integrated switch-mode battery charge controller. It provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a solar panel, the input regulation loop lowers the charge current so that the solar panel can provide maximum power output.
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 charges the battery in three phases: pre-conditioning, constant current, and constant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate. The pre-charge 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 a 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, 3.5 mm × 3.5 mm2 thin QFN package.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
