Packaging information
| Package | Pins VQFN (RGE) | 24 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 250 | SMALL T&R |
Features for the BQ24616
- Battery Thermistor Sense for JEITA Guideline
Compatible Charger - 600-kHz NMOS-NMOS Synchronous Buck
Converter - Stand-Alone Charger Support for Li-Ion or Li-
Polymer - 5-V–28-V VCC Input Operating Range and
Supports 1 to 6 Battery Cells - Up to 10-A Charge Current and Adapter Current
- High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Adapter Current Accuracy
- Integration
- Automatic System Power Selection From
Adapter or Battery - Internal Loop Compensation
- Internal Soft-Start
- Dynamic Power Management
- Automatic System Power Selection From
- Safety Protection
- Input Overvoltage Protection
- Battery Detection
- Reverse Protection Input FET
- Programmable Safety Timer
- Charge Overcurrent Protection
- Battery Short Protection
- Battery Overvoltage Protection
- Thermal Shutdown
- Status Outputs
- Adapter Present
- Charger Operation Status
- Charge Enable Pin
- 6-V Gate Drive for Synchronous Buck Converter
- 30-ns Driver Dead-Time and 99.5% Maximum
Effective Duty Cycle - 24-Pin, 4-mm × 4-mm QFN Package
- Energy Star Low Quiescent Current Iq
- < 15-µA Off-State Battery Discharge Current
- < 1.5-mA Off-State Input Quiescent Current
Description for the BQ24616
The bq2461x device is a highly integrated, Japan Electronic Information Technology Association (JEITA) guideline-compatible, Li-ion or Li-polymer switched-mode battery charge controller. The device offers a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, adapter current regulation, and charge status monitoring
The bq2461x charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup. The bq2461x 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.