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  2. Power Management
  3. LDO Linear Regulators
  4. Negative Linear Regulators (LDO)
  5. ADP7182


Alternative Parts

Overview

Features and Benefits

  • Low noise: 18 μV rms
  • Power supply rejection ratio (PSRR): 66 dB at 10 kHz at VOUT = −3 V
  • Positive or negative enable logic
  • Stable with small 2.2 μF ceramic output capacitor
  • Input voltage range: −2.7 V to −28 V
  • Maximum output current: −200 mA
  • Low dropout voltage: −185 mV at −200 mA load
  • Initial accuracy: ±1%
  • Accuracy over line, load, and temperature
    • +2% maximum/−3% minimum
  • Low quiescent current, IGND = −650 μA with −200 mA load
  • Low shutdown current: −2 μA
  • Adjustable output from −1.22 V to −VIN + VDO
  • Current-limit and thermal overload protection
  • 6- and 8-lead LFCSP and 5-lead TSOT
  • Supported by ADIsimPower tool

Product Details

The ADP7182 is a CMOS, low dropout (LDO) linear regulator that operates from −2.7 V to −28 V and provides up to −200 mA of output current. This high input voltage LDO is ideal for regulation of high performance analog and mixed signal circuits operating from −27 V down to −1.2 V rails. Using an advanced proprietary architecture, it provides high power supply rejection and low noise, and achieves excellent line and load transient response with a small 2.2 μF ceramic output capacitor.

The ADP7182 is available in fixed output voltage and an adjustable version that allows the output voltage to range from −1.22 V to −VIN + VDO via an external feedback divider.

The following fixed output voltages are available from stock: −5 V (3 mm × 3 mm LFCSP), −1.8 V, −2.5 V, −3 V, −5 V (TSOT), −1.2 V, −1.5 V, −2.5 V, −5 V (2.00 mm × 2.00 mm LFCSP). Additional voltages are available by special order.

The ADP7182 regulator output noise is 18 μV rms independent of the output voltage. The enable logic is capable of interfacing with positive or negative logic levels for maximum flexibility.

The ADP7182 is available in 5-lead TSOT, 6- and 8-lead LFCSP packages for a small, low profile footprint.

Applications

  • Regulation to noise sensitive applications
    • Analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits, precision amplifiers
  • Communications and infrastructure
  • Medical and healthcare
  • Industrial and instrumentation

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.

Evaluation Kits (5)

Documentation & Resources

  • View All (16)
  • 3rd Party Solutions (2)
  • Data Sheet (1)
  • Application Note (2)
  • User Guide (2)
  • Webcast (2)
  • Solutions Bulletin & Brochure (1)
  • Circuit Note (5)
  • Technical Article (1)
  • Circuit Note

    Tools & Simulations

    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.

    LTspice

    Models for the following parts are available in LTspice:

    ADP7182
    ADP7182-1.2
    ADP7182-1.5
    ADP7182-1.8
    ADP7182-2.5
    ADP7182-3.0
    ADP7182-5.0

    Design Tool

    ADI Linear Regulator Design Tool and Parametric Search

    Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

    Reference Designs (8)

    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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    ADP7182ACPZ-5.0-R7 Material Declaration Reliability Data 8-Lead LFCSP (3mm x 3mm w/ EP)
    ADP7182ACPZ-R7 Material Declaration Reliability Data 8-Lead LFCSP (3mm x 3mm w/ EP)
    ADP7182ACPZN-1.2R7 Material Declaration Reliability Data 6-Lead LFCSP (2mm x 2mm w/ EP)
    ADP7182ACPZN-1.5R7 Material Declaration Reliability Data 6-Lead LFCSP (2mm x 2mm w/ EP)
    ADP7182ACPZN-2.5R7 Material Declaration Reliability Data 6-Lead LFCSP (2mm x 2mm w/ EP)
    ADP7182ACPZN-5.0R7 Material Declaration Reliability Data 6-Lead LFCSP (2mm x 2mm w/ EP)
    ADP7182ACPZN-R7 Material Declaration Reliability Data 6-Lead LFCSP (2mm x 2mm w/ EP)
    ADP7182AUJZ-1.8-R7 Material Declaration Reliability Data 5-Lead TSOT
    ADP7182AUJZ-2.5-R7 Material Declaration Reliability Data 5-Lead TSOT
    ADP7182AUJZ-3.0-R7 Material Declaration Reliability Data 5-Lead TSOT
    ADP7182AUJZ-5.0-R7 Material Declaration Reliability Data 5-Lead TSOT
    ADP7182AUJZ-R7 Material Declaration Reliability Data 5-Lead TSOT
    Wafer Fabrication Data

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    Evaluation Boards

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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.