Multi-Output DC-DC Regulator for Low Power LS1 Communication Processors

VR5100

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The VR5100 is a high performance, multi-output DC-DC regulator designed to power single or dual core LS1 processors like LS1012A and LS1024A. It includes three buck regulators, six LDOs and a boost regulator offering a complete power management solution for Network Attached Storage, battery operated Mobile NAS, IoT gateway, Home and factory automation systems.

The VR5100 uses a low quiescent current architecture allowing high efficiency operation at light load extending the battery life. The high frequency operation reduces the total solution to less than 0.5 sqin. The high power QFN package keeps the junction temperature low even at high ambient temperature.

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Block Diagram

VR5100 Block Diagram

VR5100 Multi-output DC-DC regulator Block Diagram
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Features

Key Features

  • Three adjustable high efficiency buck regulators: 3.8 A, 1.25 A, 1.5 A
    • Selectable modes: PWM, PFM, APS
  • 5.0 V, 600 mA boost regulator with PFM or Auto mode
  • Six adjustable general purpose linear regulators
  • Input voltage range: 2.8 V to 4.5 V
  • OTP (One Time Programmable) memory for device configuration
    • Programmable start-up sequence and timing
    • Selectable output voltage, frequency, soft start
  • I2C interface and input control
  • Always ON RTC supply and Coin cell charger
  • DDR reference voltage
  • -40 °C to +125 °C operating junction temperature
  • LS1024A and LX2160 MCU supported
  • Output current 2.75 A

Target Applications

  • Network attached storage (NAS)
  • Value IOT gateway
  • Mobile NAS
  • Industrial control
  • Home/Factory automation

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