Overview
The Texas Instruments BQ24616RGER is a highly integrated, standalone 1-6 cell buck battery charge controller designed for lithium-ion (Li-ion) or lithium-polymer (Li-polymer) batteries. This device is compliant with the Japan Electronic Information Technology Association (JEITA) guidelines and features a constant-frequency synchronous switching PWM controller. It offers high-accuracy charge current and voltage regulation, charge preconditioning, termination, adapter current regulation, and charge status monitoring. The BQ24616RGER charges the battery in three phases: preconditioning, constant current, and constant voltage, ensuring efficient and safe battery charging.
Key Specifications
| Specification | Value |
|---|---|
| Package | VQFN (RGE) - 24 pins |
| Operating Temperature Range (°C) | -40 to 85 |
| Number of Series Cells | 1 to 6 |
| Maximum Charge Current (A) | 10 |
| VCC Input Operating Range (V) | 5 to 28 |
| Absolute Maximum Vin (V) | 33 |
| Cell Chemistry | Li-ion/Li-polymer |
| Charge Voltage Accuracy | ±0.5% |
| Charge Current Accuracy | ±3% |
| Adapter Current Accuracy | ±3% |
| Control Topology | Switch-Mode Buck |
| Control Interface | Standalone (RC-Settable) |
| Off-State Battery Discharge Current | < 15 µA |
| Off-State Input Quiescent Current | < 1.5 mA |
Key Features
- Battery Thermistor Sense for JEITA Guideline Compatible Charger
- 600-kHz NMOS-NMOS Synchronous Buck Converter
- Support for Li-ion or Li-polymer batteries
- High-Accuracy Voltage and Current Regulation
- Automatic System Power Selection From Adapter or Battery
- Internal Loop Compensation and Soft-Start
- Dynamic Power Management
- Safety Protection: Input Overvoltage, Battery Detection, Reverse Protection Input FET, Charge Overcurrent, Battery Short, Battery Overvoltage, and Thermal Shutdown
- Status Outputs: Adapter Present, Charger Operation Status, Charge Enable Pin
- 6-V Gate Drive for Synchronous Buck Converter with 30-ns Driver Dead-Time and 99.5% Maximum Effective Duty Cycle
Applications
The BQ24616RGER is suitable for a variety of applications requiring efficient and safe lithium-ion or lithium-polymer battery charging. These include:
- Portable electronics such as smartphones, tablets, and laptops
- Power tools and cordless appliances
- Electric vehicles and hybrid electric vehicles
- Industrial and medical devices requiring reliable battery charging
- Consumer electronics with rechargeable batteries
Q & A
- What is the BQ24616RGER?
The BQ24616RGER is a standalone 1-6 cell buck battery charge controller for Li-ion or Li-polymer batteries, compliant with JEITA guidelines.
- What is the operating temperature range of the BQ24616RGER?
The operating temperature range is -40°C to 85°C.
- How many series cells can the BQ24616RGER support?
The device supports 1 to 6 series cells.
- What is the maximum charge current of the BQ24616RGER?
The maximum charge current is 10 A.
- What is the input operating voltage range of the BQ24616RGER?
The input operating voltage range is 5 V to 28 V.
- Does the BQ24616RGER have safety protection features?
Yes, it includes input overvoltage protection, battery detection, reverse protection input FET, charge overcurrent protection, battery short protection, battery overvoltage protection, and thermal shutdown.
- How does the BQ24616RGER manage power?
The device features dynamic power management and automatic system power selection from the adapter or battery.
- What is the accuracy of the charge voltage and current regulation?
The charge voltage accuracy is ±0.5%, and the charge current accuracy is ±3%.
- Does the BQ24616RGER have status output features?
Yes, it includes status outputs for adapter presence, charger operation status, and charge enable pin.
- What is the package type and pin count of the BQ24616RGER?
The package type is VQFN (RGE) with 24 pins.
