Calculation tool
BQ24620
Standalone 1-7 cell Buck battery charge controller for Lithium phosphate batteries
Data sheet
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
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.
Technical documentation
No results found. Please clear your search and try again.
View all 3 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | bq24620 Stand-Alone Synchronous Switched-Mode Lithium Phosphate Battery Charger With Low Iq datasheet (Rev. B) | PDF | HTML | 17 Jun 2015 |
| Application note | BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers | 31 Dec 2019 | ||
| User guide | Multi Cell Synchronous Switch-Mode Charger, EVM (HPA421) | 18 Feb 2010 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
BQ24620EVM — Evaluation Module for BQ24620 Multi Cell Synchronous Switch-Mode Charger
Evaluation Module for bq24600/bq24620/bq24640. the bq24600 is a highly integrated Li-ion or Li-polymer switch-mode battery charge controller. The bq24620 is highly integrated switch-mode battery charge controller designed specifically to charge Lithium Phosphate battery chemistries. The bq24640 is (...)
User guide: PDF
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RVA) | 16 | Ultra Librarian |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.