Analog Devices Inc. ADP5070/ADP5071 DC-to-DC Switching Regulators

Analog Devices ADP5070/ADP5071 DC-to-DC switching regulators are dual high-performance DC-to-DC regulators that generate independently regulated positive and negative rails. With an input voltage range of 2.85V to 15V, ADP5070/ADP5071 supports a wide array of applications. 

The integrated main switch in both regulators allows the generation of an adjustable positive output voltage up to +39V and a negative output voltage down to -39V below the input voltage. Operating at a pin-selected 1.2MHz/2.4MHz switching frequency, ADP5070/ADP5071 can synchronize with an external oscillator from 1.0MHz to 2.6MHz to ease noise filtering in sensitive applications. 

Key safety features include overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown (TSD), and input under-voltage lockout (UVLO). 

Available in a 20-lead LFCSP package and rated for a -40°C to +125°C junction temperature range, the ADP5070/ADP5071 DC-to-DC switching regulators are ideal for bipolar amplifiers, ADCs, DACs & multiplexers, charge-coupled device (CCD) bias supply, optical module supply, and RF power amplifier (PA) bias.


  • Wide input supply voltage range: 2.85V to 15V
  • Generates well regulated, independently resistor programmable VPOS and VNEG outputs
  • Boost regulator to generate VPOS output
    • Adjustable positive output to 39V
    • Integrated main switch
      • 1.0A (ADP5070)
      • 1.2A (ADP5071)
    • Optional single-ended primary-inductor converter (SEPIC) configuration for automatic step-up/step-down
  • Inverting regulator to generate VNEG output
    • Adjustable negative output to VIN − 39V
    • Integrated 0.6A main switch
      • 0.6A (ADP5070)
      • 1.2A (ADP5071)
  • True shutdown for both positive and negative outputs
  • 1.2MHz/2.4MHz switching frequency with optional external frequency synchronization from 1.0MHz to 2.6MHz
  • Resistor programmable soft-start timer
  • Slew rate control for lower system noise
  • Individual precision enable and flexible start-up sequence control for the symmetric start, VPOS first, or VNEGfirst
  • Out-of-phase operation
  • UVLO, OCP, OVP, and TSD protection
  • 4mm × 4mm, 20-lead LFCSP and 20-lead TSSOP
  • -40°C to +125°C junction temperature range
  • Supported by the ADIsimPower toolset


  • Bipolar amplifiers, ADCs, DACs, and multiplexers
  • Charge-coupled device (CCD) bias supply
  • Optical module supply
  • RF power amplifier (PA) bias

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Published: 2015-06-30 | Updated: 2022-03-11