Texas Instruments bq2419x USB / Adapter Chargers
Texas Instruments bq2419x I²C Single-Cell USB / Adapter Chargers are highly-integrated switch-mode battery charge management and system power path management devices for single cell Li-Ion and Li-polymer batteries in a wide range of tablets and other portable devices. The low impedance power path of these TI USB / adapter chargers optimizes switch-mode operation efficiency, reduces battery charging time, and extends battery life during discharging phase. The I²C serial interface with charging and system settings makes bq2419x USB / adapter cahrgers a truly flexible solution. These TI devices support a wide range of input sources, including standard USB host port, USB charging port and high power DC adapter.
bq24190-bq24193 Features
- High Efficiency 4.5A Switch Mode Charger
- 92% Charge Efficiency at 2A, 90% at 4A
- Accelerate Charge Time by Battery Path Impedance Compensation
- Highest Battery Discharge Efficiency with 12mΩ Battery Discharge MOSFET up to 9A Discharge Current
- Single Input USB-compliant/Adapter Charger
- USB Host or Charging Port D+/D- Detection Compatible to USB Battery Charger Spec 1.2
- Input Voltage and Current Limit Supports USB2.0 and USB 3.0
- Input Current Limit: 100mA, 150mA, 500mA, 900mA, 1.2A, 1.5A, 2A and 3A
- 3.9V–17V Input Operating Voltage Range
- USB OTG 5V at 1.3A Synchronous Boost Converter Operation
- 93% 5V Boost Efficiency at 1A
- Narrow VDC (NVDC) Power Path Management
bq24195 Features
- High Efficiency Switch Mode Charger
- 2.5A(bq24195L) or 4.5A(bq24195) Fast Charging
- 92% Charge Efficiency at 2A, 90% at 4A
- Synchronous Boost Converter in Battery Boost Mode
- 5.1V at 1A (bq24195L) or 5.1V at 2.1A (bq24195)
- 94% 5.1V Boost Efficiency at 1A, 91% at 2.1A
- Highest Battery Discharge Efficiency with 12mΩ Battery Discharge MOSFET up to 9A
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bq24196 Features
- High Efficiency 2.5A Switch Mode Charger
- 92% Charge Efficiency at 2A
- Highest Battery Discharge Efficiency with 12mΩ Battery Discharge MOSFET up to 9A Discharge Current
- Single Input USB-compliant/Adapter Charger
- Input Voltage and Current Limit Supports USB2.0 and USB 3.0
- Input Current Limit: 100mA, 150mA, 500mA, 900mA, 1.2A, 1.5A, 2A and 3A
- 3.9V–17V Input Operating Voltage Range
- USB OTG 5V at 1.3A Synchronous Boost Converter Operation
- Narrow VDC (NVDC) Power Path Management
- 1.5MHz Switching Frequency for Low Profile Inductor
- Autonomous Battery Charging with or without Host Management
- High Accuracy (0°C to 125°C)
- High Integration
- Power Path Management
- Synchronous Switching MOSFETs
- Safety
- Battery Temperature Sensing and Charging Safety Timer
- Thermal Regulation and Thermal Shutdown
- Charge Status Outputs for LED or Host Processor
Applications
- Tablet PC
- Smart Phone
- Power Bank for Smartphone, Tablet (bq24195)
- Portable Audio Speaker
- Portable Media Players
- Internet Devices
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