Packaging information
| Package | Pins VQFN (RVA) | 16 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 250 | SMALL T&R |
Features for the BQ24620
- 300-kHz NMOS-NMOS Synchronous Buck
Converter - Stand-Alone Charger Designed Specifically for
Lithium Phosphate - 5-V to 28-V VCC Operating Range, Supports 1 to
7 Battery Cells - High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- Integration
- Internal Loop Compensation
- Internal Soft Start
- Safety
- Input Overvoltage Protection
- Battery Thermistor Sense Suspend Charge at
Hot/Cold Charge Suspend and Automatically
ICHARGE/8 at WARM/COOL - Battery Detection
- Built-In 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 99.95% Maximum
Effective Duty Cycle - 16-Pin 3.5-mm × 3.5-mm QFN Package
- Energy Star Low Iq
- < 15-µA Off-State Battery Discharge Current
- < 1.5-mA Off-State Input Quiescent Current
- APPLICATIONS
- Power Tools and Portable Equipment
- Personal Digital Assistants
- Handheld Terminals
- Industrial and Medical Equipment
- Netbooks, Mobile Internet Devices, and
Ultramobile PCs
All other trademarks are the property of their respective owners
Description for the BQ24620
The bq24620 device is a highly integrated lithium phosphate 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, and charge status monitoring.
The bq24620 charges the battery in three phases: preconditioning, constant current, and constant voltage.