ADP7183

-300 mA, Ultralow Noise, High PSRR, Low Dropout Linear Regulator

Data Sheet
Rev. B
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Data Sheet Rev. B
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Alternative Parts

ADP7185
ADP7185

-500 mA, Ultralow Noise, High PSRR, Low Dropout Linear Regulator

Overview

Features and Benefits

  • Input voltage range: −2.0 V to −5.5 V
  • Maximum output current: −300 mA
  • Fixed output voltage options: −0.5 V to −4.5 V
  • Adjustable output from −0.5 V to −VIN + 0.5 V 
  • Low output noise: 4 µV rms from 100 Hz to 100 kHz 
  • Noise spectral density: 20 nV/√Hz, 10 kHz to 1 MHz
  • Power supply rejection ratio (PSRR) at −300 mA load
    • 75 dB typical at 10 kHz 
    • 62 dB typical at 100 kHz
    • 40 dB typical at 1 MHz
  • Low dropout voltage: −130mV typical at −300 mA load
  • Initial output voltage accuracy (VOUT): ±0.5% at IOUT = −10 mA
  • Output voltage accuracy over line, load, and temperature: ±2.6%
  • Operating supply current (IGND): −0.6 mA typical at no load
  • Low shutdown current: −2 µA typical at VIN = −5.5 V
  • Stable with small 4.7 µF ceramic input and output capacitor
  • Positive or negative enable logic
  • Current-limit and thermal overload protection
  • 8-lead, 2 mm × 2 mm LFCSP package
  • Supported by ADIsimPOWER voltage regulator design tool

Product Details

The ADP7183 is a complementary metal oxide semiconductor (CMOS), low dropout (LDO) linear regulator that operates from −2.0 V to −5.5 V and provides up to −300 mA of output current. This LDO regulator is ideal for regulation of high performance analog and mixed-signal circuits operating from −0.5 V down to −4.5 V. Using an advanced proprietary architecture, the ADP7183 provides high PSRR and low noise, and it achieves excellent line and load transient response with a small 4.7 μF ceramic output capacitor.

The ADP7183 is available in 15 fixed output voltage options. The following voltages are available from stock: −0.5 V, −1.0 V, −1.2 V, −1.5 V, −1.8 V, −2.0 V, −2.5 V, −3.0 V, and −3.3 V. Additional voltages available by special order are −0.8 V, −0.9 V, −1.3 V, −2.8 V, −4.2 V, and −4.5 V. An adjustable version is also available that allows output voltages that range from −0.5 V to −VIN + 0.5 V with an external feedback divider.

The enable logic feature is capable of interfacing with positive or negative logic levels for maximum flexibility.

The ADP7183 regulator output noise is 4 μV rms independent of the output voltage. The ADP7183 is available in an 8-lead, 2 mm × 2 mm LFCSP, making it not only a very compact solution but also providing excellent thermal performance for applications requiring up to −300 mA of output current in a small, low profile footprint.

Applications

  • Regulation to noise sensitive applications: analog-to-digital converters (ADCs), digital-to-analog converters (DACs), precision amplifiers
  • Communications and infrastructure
  • Medical and healthcare
  • Industrial and instrumentation

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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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Documentation

Tools & Simulations

Design Tools

ADI Linear Regulator Design Tool and Parametric Search

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Reference Materials

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Linear Low Dropout (LDO) Regulator Solutions

Design Resources

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.