Power_DC/DC Converter ICs

E522.01 | Low Quiescent Current Step Down Converter (5V/500mA)


The E522.01/02/03/04/05/06/07/08/09 product family provides ultra low quiescent current step down DC/DC converters with integrated power MOSFET.
The PFM (Pulse Frequency Modulation) regulator allows outstanding fast line- and load response time, stability and high efficiency over the full load current range. The integrated idle detection assures an ultra low idle current and high efficiency with low load currents down to <100μA for the completely powered application. A power-good signal is provided by a high-voltage opendrain low-side switch. The E522.0x buck converter accommodates to common single supply micro controller applications. Low external component count and small QFN20L4 / TSSOP16 package allow compact PCB designs.


  • Voltage range 4.3V to 40V
  • PFM regulator up to 1.33MHz
  • Up to >92% efficiency
  • Very low 8µA sleep mode current
  • Ultra low 12µA standby current
  • 100% duty cycle capability
  • AEC-Q100 qualification
  • Junction temperature range –40°C to +150°C


  • Micro Controller Systems
  • Automotive Telematics, Dashboards
  • Partial Networking
  • Peripheral Control Systems

Ordering Information

  • Samples
    Part No.Output
    TempJunc RangePackageOrder No.
    E522.015V500mA-40°C to +150°CQFN20L4E52201A52C
    E522.015V500mA-40°C to +150°CTSSOP16E52201A65B


  • Boards
    Part No.DescriptionBoard typeOrder No.
    E522.01Low Quiescent Current PFM Step Down Converter (5V/500mA)Evaluation BoardK52201-0001


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Application Diagram

Low Quiescent Current Step Down Converter (5V/500mA)