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Standalone 1-6 cell Buck battery charge controller with solar input and integrated MPPT

ACTIVE custom-reels CUSTOM Custom reel may be available
Out of stock


Qty Price (USD)
1-99 3.4
100-249 2.772
250-999 2.179
1,000+ 1.848

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information info-circle

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins VQFN (RVA) | 16
Package qty | Carrier: 3,000 | LARGE T&R
Operating temperature range (°C) -40 to 85
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Features for the BQ24650

  • Maximum Power Point Tracking (MPPT) capability by input Voltage regulation
  • Programmable MPPT setting
  • 5-V to 28-V Input solar panel
  • 600-kHz NMOS-NMOS Synchronous buck controller
  • Resistor programmable float voltage
  • Accommodates Li-Ion/Polymer, LiFePO4, lead acid chemistries
  • Accuracy
    • ±0.5% Charge voltageregulation
    • ±3% Charge current regulation
    • ±0.6% Inputvoltage regulation
  • High Integration
    • Internal loop compensation
    • Internal digitalsoft start
  • Safety
    • Inputovervoltage protection
    • Battery temperature-sensing
    • Batteryabsent detection
    • Thermalshutdown
  • Charge status outputs for LED or host processor
  • Charge enable on MPPSET pin
  • Automatic sleep mode for low power consumption
    • < 15-µA OFF-state battery dischargecurrent
  • Small 3.5 × 3.5 mm2 16-pin QFN package

Description for the BQ24650

The BQ24650 device is a highly integrated switch-mode battery charge controller. Itprovides input voltage regulation, which reduces charge current when input voltage falls below aprogrammed level. When the input is powered by a solar panel, the input regulation loop lowers thecharge current so that the solar panel can provide maximum power output.

The BQ24650 offers a constant-frequency synchronous PWM controller with high accuracycurrent and voltage regulation, charge preconditioning, charge termination, and charge statusmonitoring.

The BQ24650 charges the battery in three phases: pre-conditioning, constant current, andconstant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate. Thepre-charge timer is fixed at 30 minutes. The BQ24650 automatically restarts the charge cycle if thebattery voltage falls below an internal threshold and enters a low quiescent current sleep modewhen 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 feedbackreference. The charge current is programmed by selecting an appropriate sense resistor. The BQ24650is available in a 16 -pin, 3.5 mm × 3.5 mm2 thin QFN package.

Out of stock


Qty Price (USD)
1-99 3.4
100-249 2.772
250-999 2.179
1,000+ 1.848

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships  tube or tray  devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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