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Announcement: Introducing HL8545/G: Quad-Channel 50 mΩ High-Side Switch for Advanced Automotive Applications


The HL7019 is a fully integrated switch-mode Li-ion battery charger with power MOSFET, power path management, I²C interface and USB On-the-Go (OTG) boost function. It can be used with single cell or multi-cells in parallel Li-ion and Li-polymer batteries in a wide range of cellphones, smartphones, tablets, power banks, and other portable devices. Its switch-mode operation and low-resistance power path maximize charging, discharging, and boost efficiency. It also reduces battery charging time and extends battery life during the discharging phase.

This device supports a wide range of input sources, including standard USB host port, USB charging port, and high-power AC-DC adapter. It supports an input operating voltage from 3.9V to 14V and can power up the system rail without a battery. It can automatically adjust to the maximum power output of the input source via the input dynamic power management control (INDPM).

For more detailed description of the device, please download a product brief.



  • 20V Input voltage tolerance, 3.9-14V operating voltage range
  • High efficiency 3A switch mode charger
    • 92% Charge efficiency at 2A
  • USB-compliant/adapter charger
    • USB 1.0/2.0/3.0 compliant input current limit
    • 0.1-3A Programmable input current limit
  • Autonomous preconditioning, CC/CV charge control, termination, and recharge
  • 1.5MHz Synchronous PWM converter for small 1µH inductor
  • USB OTG boost programmable VOUT: 4.55V to 5.51V or 9V
    • Max IOUT: 2.1A@4.55-5.51V
    • 90% Efficiency at 1.5A
    • Hiccup mode over-current protection for reliable capacitive load start-up
  • Power path management
    • Instant system on with no battery or deeply discharged battery
    • Ideal diode operation in battery assistant mode
  • Full range programmable charge parameter through I²C compatible interface

Block Diagram

HL7019 - HMI Main Photo

For more information or a full datasheet request, please contact the factory at

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