Texas Instruments Introduces bq2419x Li-Ion Battery Chargers

Texas Instruments bq2419x Li-Ion battery chargers

Texas Instruments announced their bq2419x family of 4.5-A output, 20-V input-rated switch-mode chargers. The new TI integrated circuits feature I2C interface and USB On-the-Go (OTG). The lithium-ion battery charger ICs reduce charge time by 50% in smartphones and tablets compared to other charger solutions. The bq2419x battery chargers for single-cell Li-Ion batteries is available now in a 24-pin, 4-mm x 4-mm QFN package. They are priced at $2.50 in quantities of 1,000.

TI bq2419x family of 4.5-A output, 20-V input-rated switch-mode chargers

TI’s new bq24190, bq24192, bq24192i, bq24193, bq24195, bq24195L and bq24196 fast-charge circuits reduce charge time through battery path impedance compensation, and offer programmable thermal management capability to ensure the safest, most reliable system operation. The Texas Instruments bq2419x are ideal for power banks and packs, 4G LTE routers, Wi-Fi speakers, portable medical and industrial designs.

Texas Instruments bq2419x 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 12mO 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
  • Support All Kinds of Adapter with Input Voltage DPM Regulation
  • USB OTG 5V at 1.3A Synchronous Boost Converter Operation
  • 93% 5V Boost Efficiency at 1A
  • Narrow VDC (NVDC) Power Path Management
  • Instant-on Works with No Battery or Deeply Discharged Battery
  • Ideal Diode Operation in Battery Supplement Mode
  • 1.5MHz Switching Frequency for Low Profile Inductor
  • Autonomous Battery Charging with or without Host Management
  • Battery Charge Enable
  • Battery Charge Preconditioning
  • Charge Termination and Recharge
  • ±0.5% Charge Voltage Regulation
  • ±7% Charge Current Regulation
  • ±7.5% Input Current Regulation
  • ±2% Output Regulation in Boost Mode
  • Power Path Management
  • Synchronous Switching MOSFETs
  • Integrated Current Sensing
  • Bootstrap Diode
  • Internal Loop Compensation
  • Battery Temperature Sensing and Charging Safety Timer
  • JEITA Guideline Compliant (bq24193)
  • Thermal Regulation and Thermal Shutdown
  • Input System Over-Voltage Protection
  • MOSFET Over-Current Protection
  • Charge Status Outputs for LED or Host Processor
  • Low Battery Leakage Current and Support Shipping Mode
  • 4mm x 4mm QFN-24 Package

More info: TI bq2419x 4.5-A Output, 20-V Input-rated Switch-mode Chargers (pdf)