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Overview

Features and Benefits

  • Dual LDOs Powered by an Integrated Switching Step-Down Regulator
  • Low Noise Silent Switcher® Architecture with an Integrated EMI Noise Shield
  • CISPR22 Class B and CISPR25 Class 5 Compliant
  • Ultralow Output RMS Noise: <1μVRMS (10Hz to 100kHz)
  • Ultralow Output Spot Noise: 2nV/√Hz at 10kHz
  • Ultrahigh PSRR: 80dB at 100kHz
  • Wide Input Voltage: 3.5V to 40V
  • Wide Output Voltage: 0V to 8V
  • Dual 500mA Continuous Current at TA = 85°C
  • Voltage Tracking Function to Minimize Power Loss
  • 100μA SET Pin Current with ±1% Initial Accuracy
  • Selectable Switching Frequency: 200kHz to 2.2MHz
  • External Synchronization
  • Programmable Power Good
  • Parallelable for Lower Noise and Higher Current
  • 9mm × 6.25mm × 3.32mm BGA

Product Details

The LTM8080 is a 40VIN, dual 500mA or single 1A ultralow noise, ultrahigh PSRR μModule® regulator. LTM8080 has cascaded architecture which contains a 40VIN step-down Silent Switcher regulator with an integrated EMI noise shield followed by dual high-performance low dropout linear regulators. The dual LDOs feature ADI’s ultralow noise and ultrahigh PSRR architecture for powering noise-sensitive applications. The LTM8080 is an integrated solution comprised of a switcher and LDOs, which offers both advantages while maintaining a small size and significantly reduced PCB layout sensitivity.

The package includes the controllers, power switches, inductors, and support components. In addition, the LTM8080 has a built-in voltage tracking function that automatically sets VBUS to either 2.5V nominal or 1V higher than VOUT1, whichever is greater, to achieve superior noise performance and minimize power dissipation.

The LTM8080 is packaged in a thermally enhanced, compact (9mm × 6.25mm × 3.32mm) over-molded Ball Grid Array (BGA) package suitable for automated assembly by standard surface mount equipment and is RoHS compliant.

APPLICATIONS

  • RF Power Supplies: PLLs, VCOs, Mixers, LNAs
  • Very Low Noise Instrumentation
  • High Speed/High Precision Data Converters
  • Medical Applications: Imaging, Diagnostics

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.