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  2. Power Management
  3. LDO Linear Regulators
  4. Positive Linear Regulators (LDO)
  5. ADP1740


Alternative Parts

Overview

Features and Benefits

  • Maximum output current: 2 A
  • Input voltage range: 1.6 V to 3.6 V
  • Low shutdown current: 2 μA
  • Low dropout voltage:
    160 mV @ 2 A load
  • Initial accuracy: ±1%
  • Accuracy over line, load, and temperature: ±2%
  • 7 fixed output voltage options with soft start:
    0.75 V to 2.5 V (ADP1740)
  • Adjustable output voltage options with soft start: 0.75 V to 3.3 V (ADP1741)
  • High PSRR
    65 dB @ 1 kHz
    65 dB @ 10 kHz
    54 dB @ 100 kHz
  • 23 μV rms at 0.75 V output
  • Stable with small 4.7 μF ceramic output capacitor
  • Please see data sheet for additional features

Product Details

The ADP1740/ADP1741 are CMOS, low dropout linear regulators that operate from 1.6 V to 3.6 V and provide up to 2 A of output current. These low VIN / VOUT LDOs are ideal for regulation of nanometer FPGA geometries operating from 2.5V down to 1.8V I/O rails, and powering core voltages down to 0.75V. Using an advanced, proprietary architecture, the ADP1740/ADP1741 provide high power supply rejection ratio (PSRR) and low noise, and achieve excellent line and load transient response with only a small 4.7 μF ceramic output capacitor.

The ADP1740 is available in seven fixed output voltage options. The ADP1741 is an adjustable version that allows output voltages ranging from 0.75 V to 3.3 V via an external divider. The ADP1740/ADP1741 allow an external soft start capacitor to be connected to program the startup. A digital power-good output allows power system monitors to check the health of the output voltage.

The ADP1740/ADP1741 are available in a 16-lead, 4 mm × 4 mm LFCSP, making them not only very compact solutions, but also providing excellent thermal performance for applications that require up to 2 A of output current in a small, low profile footprint..

APPLICATIONS

  • Server computers
  • Memory components
  • Telecommunications equipment
  • Network equipment
  • DSP/FPGA/microprocessor supplies
  • Instrumentation equipment/data acquisition systems

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (4)

Documentation & Resources

  • View All (12)
  • Data Sheets (1)
  • Application Notes (1)
  • Frequently Asked Questions (1)
  • Solutions Bulletins & Brochures (2)
  • Videos (1)
  • Technical Articles (6)
  • 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:

    ADP1740-0.75
    ADP1740-1
    ADP1740-1.1
    ADP1740-1.2
    ADP1740-1.3
    ADP1740-1.5
    ADP1740-1.8
    ADP1740-2.5

    Design Tools

    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.

    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
    ADP1740ACPZ-0.75R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    ADP1740ACPZ-1.0-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    ADP1740ACPZ-1.1-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    ADP1740ACPZ-1.2-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    ADP1740ACPZ-1.3-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    ADP1740ACPZ-1.5-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    ADP1740ACPZ-1.8-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    ADP1740ACPZ-2.5-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    Wafer Fabrication Data

    PCN-PDN Information

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    Sample & Buy


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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.