BQ24725RGRR
Power Management
Technical Specifications
| Type | Description |
|---|---|
| End-Off Voltage | 2.5V |
| Battery Temperature Detection | Not supported |
| Type of Battery | Lithium Battery |
| The Chip Type | Charging IC |
| Number of Cells | 2~4 |
| Charge Current - Max | 8.128A |
| Charging Saturation Voltage | - |
| Type | Description |
|---|---|
| Interface | SMBus |
| Features | Programmable charging current;Overvoltage protection;Overcurrent Protection;Short-Circuit Protection;Under-voltage lockout;Soft-start |
| Supply Voltage | 9V~24V |
| Quiescent Current | 5 µA |
| Operating Temperature | 0°C~+125°C |
| Package / Case | VQFN-20-EP(3.5x3.5) |
Product Introduction
The bq24725 is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multi-chemistry battery charging applications.
The bq24725 uses two charge pumps to separately drive n-channel MOSFETs (ACFET, RBFET and BATFET) for automatic system power source selection.
SMBus controlled input current, charge current, and charge voltage DACs allow for high regulation accuracies that can be programmed by the system power management micro-controller.
The bq24725 uses internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.
The bq24725 charges two, three or four series Li+ cells, and is available in a 20-pin, 3.5×3.5 mm² QFN package.
Features
- SMBus Host-Controlled NMOS-NMOS Synchronous Buck Converter with Programmable 615kHz, 750kHz, and 885kHz Switching Frequencies
- Automatic N-channel MOSFET Selection of System Power Source from Adapter or Battery Driven by Internal Charge Pumps
- Enhanced Safety Features for Over Voltage Protection, Over Current Protection, Battery, Inductor and MOSFET Short Circuit Protection
- Programmable Input Current, Charge Voltage, Charge Current Limits
- ±0.5% Charge Voltage Accuracy up to 19.2V — ±3% Charge Current Accuracy up to 8.128A ±3% Input Current Accuracy up to 8.064A ±2% 20x Adapter Current or Charge Current Amplifier Output Accuracy
- Programmable Battery Depletion Threshold, and Battery LERAN Function
- Programmable Adapter Detection and Indicator
- Integrated Soft Start
- Integrated Loop Compensation
- Real Time System Control on ILIM pin to Limit Charge Current
- AC Adapter Operating Range 9V-24V
- 5μA Off-State Battery Discharge Current
- 20-pin 3.5×3.5 mm² QFN Package
Applications
- Portable Notebook Computers, UMPC, UltraThin Notebook, and Netbook
- Personal Digital Assistant Handheld Terminal
- Industrial and Medical Equipment Portable Equipment
Datasheet
Alternative Parts
Common BQ24725RGRR alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
Sourcing BQ24725RGRR from China? SZ Procure helps international buyers navigate the Shenzhen electronics market and locate suitable supplier options for specific component requirements.
For BQ24725RGRR, we can check current supplier availability, compare quotations from multiple sources, coordinate purchasing, and arrange pre-shipment inspection and shipment consolidation according to your requirements.
Ready to source BQ24725RGRR? Send your requirement through Request a Quote and we'll help check sourcing options and procurement costs.