Overview
The bq24250C, specifically the bq24250CYFFR model, is a highly integrated single-cell Li-Ion battery charger and system power-path management device from Texas Instruments. This component is designed for space-limited, portable applications with high-capacity batteries. It operates from a single input that can be powered by either a USB port or an AC wall adapter, providing a versatile charging solution. The device supports both I2C and standalone modes, allowing for flexible configuration and monitoring of charge parameters. It features a power-path management architecture that enables the system to be powered from a high-efficiency DC/DC converter while simultaneously charging the battery, ensuring proper charge termination and instant system turn-on even with a totally discharged or absent battery.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4.2 | - | 10.5 | V |
| Maximum Input Voltage Rating | - | - | 20 | V |
| Charge Current (ICHG) | 300 mA | - | 2 A | A |
| Input Current Limit (ILIM) | 100 mA | - | 2 A | A |
| Oscillator Frequency | 2.7 MHz | 3 MHz | 3.3 MHz | MHz |
| Operating Junction Temperature Range | 0°C | - | 125°C | °C |
| Package Type | - | - | DSBGA (30-ball) | - |
| Package Size | - | - | 2.427 mm × 2.027 mm | mm |
Key Features
- Programmable Charge Current and Input Current Limit: Up to 2 A with current monitoring output.
- Power Path Management: Allows the system to be powered from a high-efficiency DC/DC converter while charging the battery.
- Integrated LDO: 4.9 V, 50 mA LDO output.
- System Level Protection: Includes input UVLO, input over-voltage protection (OVP), battery OVP, sleep mode, VIN_DPM, input current limit, charge current limit, thermal regulation, and thermal shutdown.
- Voltage-Based NTC Monitoring Input: Monitors battery temperature for safe charging).
- Synchronous Fixed-Frequency PWM Controller: Operating at 3 MHz for small inductor support).
- Open Drain Status Outputs: For monitoring charger status).
- I2C Interface: For adjusting charge parameters and monitoring charger status in I2C mode).
Applications
- Smart Phones: Ideal for charging and power management in smartphones).
- MP3 Players: Suitable for portable media players requiring efficient battery charging).
- Portable Media Players: Used in various handheld devices that require high-capacity battery charging).
- Handheld Devices: General use in any handheld device needing advanced battery charging and power management).
- USB Charging Compliant Devices: Compliant with USB charging standards, making it suitable for a wide range of USB-powered devices).
Q & A
- What is the maximum charge current of the bq24250C?
The maximum charge current of the bq24250C is up to 2 A).
- What are the input voltage limits for the bq24250C?
The input voltage range is from 4.2 V to 10.5 V, with a maximum input voltage rating of 20 V).
- Does the bq24250C support I2C communication?
- What is the purpose of the power path management feature in the bq24250C?
The power path management feature allows the system to be powered from a high-efficiency DC/DC converter while simultaneously and independently charging the battery).
- What types of protection does the bq24250C offer?
The bq24250C offers various protections including input UVLO, input OVP, battery OVP, sleep mode, VIN_DPM, input current limit, charge current limit, thermal regulation, and thermal shutdown).
- Can the bq24250C charge a battery from a deeply discharged state?
- What is the operating junction temperature range of the bq24250C?
The operating junction temperature range is from 0°C to 125°C).
- What is the package type and size of the bq24250CYFFR?
The package type is DSBGA (30-ball) with a size of 2.427 mm × 2.027 mm).
- Does the bq24250C have an integrated LDO?
- How does the bq24250C monitor battery temperature?
The bq24250C includes a voltage-based battery pack thermistor monitoring input (TS) to monitor battery temperature for safe charging).
