Overview
The BQ24196RGET, produced by Texas Instruments, is a highly-integrated switch-mode battery charge management and system power path management device. It is designed for single cell Li-Ion and Li-polymer batteries, making it ideal for a wide range of tablet and other portable devices. The device features an I2C serial interface for charging and system settings, providing flexibility and ease of use. It supports various input sources, including standard USB host ports, USB charging ports, and high power DC adapters, and is compliant with USB 2.0 and USB 3.0 power specifications as well as USB On-the-Go operation power rating specifications.
Key Specifications
| Parameter | Value |
|---|---|
| Absolute Vin (Safety Rating) Max | 22 V |
| Battery Charge Voltage Max | 4.4 V |
| Battery Charge Voltage Min | 3.5 V |
| Cell Chemistry | Li-Ion/Li-Polymer |
| Charge Current Max | 2.5 A |
| Control Interface | I2C, Standalone (RC-Settable) |
| Control Topology | Switch-Mode Buck |
| Number of Series Cells | 1 |
| Operating Vin Max | 17 V |
| Operating Vin Min | 3.9 V |
| Package Type | VQFN |
| Package Size | 4.00 mm x 4.00 mm |
| Switching Frequency | 1.5 MHz |
| Charge Voltage Regulation | ±0.5% |
| Charge Current Regulation | ±7% |
| Input Current Regulation | ±7.5% |
| Output Regulation in Boost Mode | ±2% |
Key Features
- High Efficiency 2.5-A Switch Mode Charger with 92% charge efficiency at 2 A
- Battery Temperature Sensing and Charging Safety Timer
- Power Path Management with Ideal Diode Operation in Battery Supplement Mode
- Autonomous Battery Charging with or without Host Management
- High Accuracy (0°C to 125°C) with ±0.5% Charge Voltage Regulation
- Integrated FET, OTG (On The Go Boost), and Thermal Regulation
- Thermistor Monitoring, Charging Safety Timer, and Over-Voltage/Over-Current Protections
- STAT Output for Charging Status and Fault Conditions, PG Output for Good Power Source, and INT for Fault Notification
- Low Battery Leakage Current and Support for Shipping Mode
Applications
The BQ24196RGET is suitable for a wide range of portable devices, including tablets, smartphones, and other single cell Li-Ion and Li-polymer battery-powered devices. Its features make it particularly useful in applications where high efficiency, safety, and flexibility in charging are critical.
Q & A
- What is the maximum charge current of the BQ24196RGET?
The maximum charge current is 2.5 A. - What types of batteries does the BQ24196RGET support?
The device supports single cell Li-Ion and Li-polymer batteries. - What is the switching frequency of the BQ24196RGET?
The switching frequency is 1.5 MHz. - Does the BQ24196RGET support USB On-the-Go operation?
Yes, it supports USB On-the-Go operation by supplying 5 V on VBUS with a current limit up to 1.3 A. - What safety features does the BQ24196RGET include?
The device includes battery temperature sensing, charging safety timer, over-voltage/over-current protections, and thermal regulation. - How does the BQ24196RGET manage power path?
The device regulates the system slightly above battery voltage but does not drop below 3.5-V minimum system voltage (programmable), ensuring system operation even when the battery is depleted or removed. - What is the package type and size of the BQ24196RGET?
The package type is VQFN, and the size is 4.00 mm x 4.00 mm. - Does the BQ24196RGET require software control for charging?
No, it can initiate and complete a charging cycle without software control. - How does the BQ24196RGET report charging status and faults?
The device uses STAT output for charging status and fault conditions, PG output for indicating a good power source, and INT for immediate fault notification to the host. - What is the operating temperature range for the BQ24196RGET?
The device operates accurately from 0°C to 125°C.
