ADM7155

RECOMMENDED FOR NEW DESIGNS

600 mA, Ultralow Noise, High PSRR, RF Linear Regulator

Data Sheet (Rev. C) Product Selection Table
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Overview

  • Input voltage range: 2.3 V to 5.5 V
  • Output voltage range: 1.2 V to 3.4 V
  • Maximum load current: 600 mA
  • Initial accuracy: ±0.5%
  • Stable with a 10 μF ceramic output capacitor
  • 8-lead LFCSP and 8-lead SOIC packages
  • Precision enable
  • See datasheet for additional features

The ADM7155 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 600 mA of load current. Output voltages from 1.2 V to 3.4 V are possible depending on the model. Using an advanced proprietary architecture, it provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 μF ceramic output capacitor.

The ADM7155 is available in four models that optimize power dissipation and PSRR performance as a function of input and output voltage. See Table 9 and Table 10 for selection guides.

The ADM7155 regulator typical output noise is 0.9 μV rms from 100 Hz to 100 kHz for fixed output voltage options and 1.5 nV/√Hz for noise spectral density from 10 kHz to 1 MHz.

The ADM7155 is available in 8-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages, making it not only a very compact solution but also providing excellent thermal performance for applications requiring up to 600 mA of load current in a small, low profile footprint. 

AAPPLICATIONS

  • Regulation to noise sensitive applications: PLLs, VCOs, and PLLs with integrated VCOs
  • Communications and infrastructure
  • Backhaul and microwave links
ADM7155
600 mA, Ultralow Noise, High PSRR, RF Linear Regulator
ADM7155 Typical Application Circuit Diagram ADM7155 Pin Configuration ADM7155 Pin Configuration
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Documentation

Data Sheet 1

User Guide 1

Application Note 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
ADM7154
RECOMMENDED FOR NEW DESIGNS 600 mA, Ultralow Noise, High PSRR, RF Linear Regulator
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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • ADM7155-01
  • ADM7155-02
  • ADM7155-03
  • ADM7155-04

ADI Linear Regulator Design Tool and Parametric Search

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LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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