New Product Introduction - XR76205-Q

The XR76205-Q is a synchronous step-down regulator combining the controller, drivers, bootstrap diode and MOSFETs in a single package for point-of-load supplies well suited for automotive applications. Qualified per AEC-Q100, the XR76205-Q has a load current rating of 5A. A wide 5.5V to 40V input voltage range allows for single-supply operation from industry standard 24V ±10%, 18V-36V, and rectified 18VAC and 24VAC rails and 12V battery systems requiring inherent load dump protection.

With a proprietary emulated current mode Constant On-Time (COT) control scheme, the XR76205-Q provides extremely fast line and load transient response using ceramic output capacitors. It requires no loop compensation, simplifying circuit implementation and reducing overall component count. The control loop also provides 0.07% load and 0.15% line regulation and maintains constant operating frequency. A selectable power saving mode allows the user to operate in Discontinuous Conduction Mode (DCM) at light current loads thereby significantly increasing the converter efficiency.

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Features

  • Automotive AEC-Q100 Qualified
    • Temperature Grade1: -40°C to 125°C
    • HBM ESD Class Level 2
    • CDM ESD Class Level C4B
  • Controller, drivers, bootstrap diode and MOSFETs integrated in one package
  • 5A step-down regulator
    • Wide 5.5V to 40V input voltage range
    • ≥0.6V adjustable output voltage
  • Proprietary constant on-time control
    • No loop compensation required
    • Stable ceramic output capacitor operation
    • Programmable 200ns to 2µs on-time
    • Constant 100kHz to 800kHz frequency
  • Selectable CCM or CCM/DCM
    • CCM/DCM for high efficiency at light load
    • CCM for constant frequency at light load
  • Programmable hiccup current limit with thermal compensation
  • Precision enable and power-good flag
  • Programmable soft-start
  • 30-pin 5mm x 5mm QFN package with wettable flanks
  • Pin compatible 3A regulator, XR76203-Q coming soon
  • Pin compatible 8A regulator, XR76208-Q coming soon

Target Applications

  • Automotive systems
    • Infotainment head units
    • Advanced Driver Assistance Systems (ADAS)
  • Distributed power architecture
  • Point-of-Load (POL) converters
  • Power supply modules
  • FPGA, DSP and processor supplies
  • Industrial and military applications