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Announcement: HMI appreciates everyone who stopped by our booth at APEC 2024. We look forward to connecting again soon!

Overview

The HL7005D is a compact, flexible, high-efficiency, USB compliant switch-mode charge management device for single cell Li-ion and Li-polymer battery used in a wide range of portable applications. The charge parameters can be programmed through I²C interface. The HL7005D integrates a synchronous PWM controller, power MOSFET, input current sensing, high-accuracy current and voltage regulation, and charge termination function into a tiny CSP package.

The HL7005D provides a complete automatic three-phase battery charging control: trickle charge, constant-current charge (CC), and constant voltage charge (CV) until the battery reaches the charge termination voltage. The input current is automatically limited to the value set by the host. Charging is terminated based on the battery voltage and a user selectable minimum current level. A safety timer with reset control provides a safety backup for I²C interface. During normal operation, the IC automatically restarts the charge cycle if battery voltage falls below an internal threshold and automatically enters a sleep mode or a high impedance mode when input supply is not correctly connected. The charge status can be reported to the host through the I²C interface.

During the charging process, the IC monitors its junction temperature (TJ) and reduces the charge current once TJ increases to about 120°C. To support USB OTG device, the HL7005D can provide VBUS (5.0V) by boosting the battery voltage.

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

Features

  • Fully automatic and efficient charge management for a large capacity lithium battery
    • Automatic conditioning, CC/CV charge control, termination, and recharge
    • 550-1450mA programmable charge current
    • Support 1.7A charge current using 56milliohm sensing resistor
    • 3MHz Synchronous PWM, 1µH low profile inductor
    • Input current regulation accuracy: ±5% (100mA and 500mA)
    • Charge voltage regulation accuracy:
      • -0.25% to 0.41% (25°C)
      • ±1% (0°C to 85°C)
      • ±2% (0°C to 125°C)
    • 20V Input voltage tolerance, 6.3V max operating voltage
    • Input voltage based dynamic power management (VIN DPM)
    • Optional 32s/30 minutes safety timer with reset control
    • Power up without battery
  • Automatic adapter fault detection
  • High impedance mode with low power consumption
  • Comprehensive protections
    • Reverse battery leakage protection
    • Thermal regulation and shutdown
    • Input & output over-voltage protection

Block Diagram

HL7005D - HMI Main Photo

For more information or a full datasheet request, please contact the factory at sales@hmisemi.com.

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