Overview
The BQ24196RGER, 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 high efficiency, autonomous battery charging, and comprehensive safety features, ensuring reliable and efficient battery management. The BQ24196 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.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | VQFN-24 |
| Package Size | 4.00 mm x 4.00 mm |
| Cell Chemistry | Li-Ion/Li-Polymer |
| Charge Current (Max) | 2.5 A |
| Control Interface | I2C, Standalone (RC-Settable) |
| Control Topology | Switch-Mode Buck |
| Operating Vin (Min) | 3.9 V |
| Operating Vin (Max) | 17 V |
| Battery Charge Voltage (Min) | 3.5 V |
| Battery Charge Voltage (Max) | 4.4 V |
| Switching Frequency | 1.5 MHz |
| Charge Efficiency at 2 A | 92% |
| Boost Efficiency at 1 A | 93% |
Key Features
- High Efficiency 2.5-A Switch Mode Charger
- Autonomous Battery Charging with or without Host Management
- Battery Charge Enable, Preconditioning, and Termination
- High Accuracy (0°C to 125°C): ±0.5% Charge Voltage Regulation, ±7% Charge Current Regulation, ±7.5% Input Current Regulation
- Power Path Management with Ideal Diode Operation in Battery Supplement Mode
- USB OTG 5 V at 1.3-A Synchronous Boost Converter Operation
- Integrated FETs, Current Sensing, and Bootstrap Diode
- Thermal Regulation and Thermal Shutdown
- Input System Over-Voltage Protection and MOSFET Over-Current Protection
- Charge Status Outputs for LED or Host Processor
- Low Battery Leakage Current and Support for Shipping Mode
Applications
The BQ24196RGER is suitable for a variety of portable devices, including tablets, smartphones, and other battery-powered consumer electronics. Its high efficiency and comprehensive safety features make it an ideal choice for devices that require reliable and efficient battery charging and power management.
- Tablets and e-readers
- Smartphones and mobile devices
- Portable media players and gaming devices
- Other battery-powered consumer electronics
Q & A
- What is the maximum charge current of the BQ24196RGER?
The maximum charge current is 2.5 A.
- What types of batteries does the BQ24196RGER support?
The device supports single-cell Li-Ion and Li-polymer batteries.
- What is the operating input voltage range of the BQ24196RGER?
The operating input voltage range is from 3.9 V to 17 V.
- Does the BQ24196RGER support USB OTG operation?
Yes, it supports USB OTG operation with a 5 V output at up to 1.3 A.
- What safety features does the BQ24196RGER include?
The device includes battery temperature sensing, charging safety timer, over-voltage/over-current protections, and thermal regulation.
- How does the BQ24196RGER manage power path?
The device regulates the system slightly above battery voltage but does not drop below a programmable minimum system voltage, ensuring continuous operation even with a depleted or removed battery.
- What is the switching frequency of the BQ24196RGER?
The switching frequency is 1.5 MHz.
- Does the BQ24196RGER require software control for charging?
No, the device can initiate and complete a charging cycle without software control.
- What is the package type and size of the BQ24196RGER?
The package type is VQFN-24, and the size is 4.00 mm x 4.00 mm.
- How does the BQ24196RGER handle thermal regulation?
The device reduces charge current when the junction temperature exceeds 120°C (programmable) and includes thermal shutdown for safety.
