BQ24650 VAT
Texas Instruments
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.
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Distributors
| Distributor | SKU | Stock | MOQ | 1 | 10 | 50 | 100 | 1000 | 10000 | Purchase | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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DigiKey | 296-27699-1-ND | 9884 | 1 | $5.36 | $4.82 | $4.55 | $3.74 | $3.24 | $2.69 | Buy |
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Technical Specifications
| Lead Free Status | Yes |
| ROHS Compliance | Compliant |
| # Series Cells | >4 Cells |
| Approx. Price (US$) | 2.00 1ku |
| Battery Charge Voltage(Max)(V) | 26 |
| Battery Charge Voltage(Min)(V) | 2.1 |
| Battery Charge Voltage(V) | Adjustable |
| Cell Chemistry | Lead Acid,Li-Ion,Li-Polymer,LiFePO4 |
| Charge Current(Max)(A) | 10 |
| Control Topology | Switch-Mode |
| Estimated Package Size (WxL)(mm2) | [pf]16VQFN[/pf] |
| Operating Temperature ange(C) | -40 to 85 |
| Package Group | VQFN |
| Primary Charge Termination Method | Taper Current |
| Special Features | Temp Monitoring,Solar Input,Over Voltage Protection |
| Switching Frequency(Min)(kHz) | 510 |
| Switching Frequency(kHz) | 600 |