Active-Semi Solutions for Sustainability
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Product Features

  • Pass Apple MFi Test
  • 40V Input Voltage Surge
  • 4.5V-36V operational Input Voltage
  • Dual 5.1V Outputs with 1% Accuracy
  • Up to 3.5A Output Current
  • 2.65A Constant Current Regulation for VOUT1
  • 1.2A Constant Current Regulation for VOUT2
  • Hiccup Mode Protection at Output Short
  • >90% Efficiency at Full Load
  • <0.5mA Low Standby Input Current
  • 5.7V Output Over Voltage Protection
  • Cord Voltage Drop Compensation
  • Meet EN55022 Class B Radiated EMI Standard
  • 8kV ESD HBM Protection on DP and DM
  • USB Auto-detect Support Apple 2.4A, Samsung
    and BC1.2 Devices
  • SOP-8EP Package

ACT4525 is a wide input voltage, high efficiency?step-down DC/DC converter that operates in either?CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. ACT4525 has separated output current limits for dual port CLA applications. With the separated current limits, the CLA can meet Appleís MFi standard. ACT4525 provides up to 3.5A output current at 125kHz switching frequency. ACT4525 builds in USB auto- detect algorithms to recognize Apple, Samsung, and BC1.2 devices to ensure maximum charge?current to attached devices. ACT4525 utilize adaptive drive technique to achieve good EMI performance while main 90% efficiency at full load for mini size CLA designs. ACT4525 also built in output short circuit protection with hiccup mode. The average output current is reduced to below?6mA when output is shorted to ground.

Other features include output over voltage protection and thermal shutdown. The devices are available in a SOP-8EP package and require very few external devices for operation.