1. Products
  2. Power Management
  3. Switching Regulators
  4. Step-Down (Buck) Regulators
  5. Internal Power Switch Buck Regulators
  6. ADP2119


Overview

Features and Benefits

  • Continuous output current: 2A
  • 145 mΩ and 70 mΩ integrated FET
  • Input voltage range from 2.3 V to 5.5 V
  • Output voltage from 0.6V to VIN
  • Precision threshold enable input
  • ±1.5% output accuracy
  • Supported by ADIsimPower™ design tool
  • See datasheet for additional features

Product Details

The ADP2119 / ADP2120 are low quiescent current, synchronous, step-down DC-to -DC regulators in a compact 3mm x 3mm LFCSP_WD package. Both Devices use current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. Under light load condition, they can be configured to operate in pulse frequency modulation (PFM) mode that reduces switching frequency to save power.

The ADP2119 / ADP2120 can support input voltages from 2.3V to 5.5V. The output voltage can be adjusted from 0.6V to input voltage (VIN) for the adjustable version, while the fixed output version is available in preset output voltage options of 3.3V, 2.5V, 1.8V, 1.5V ,1.2V and 1.0V. The ADP2119 / ADP2120 require minimal external parts and provide a high efficiency solution with their integrated power switches, synchronous rectifier, and internal compensation. Each IC draws less than 3 μA current from the input source when it is disabled. Other key features include under voltage lockout(UVLO), integrated soft start to limit inrush current at startup, overvoltage protection (OVP), over current protection (OCP) and thermal shutdown (TSD).

APPLICATIONS
  • Point of load conversion
  • Communications and networking equipment
  • Industrial and instrumentation
  • Consumer electronics
  • Medical appliances

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 (4)

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:

ADP2119-1.0
ADP2119-1.2
ADP2119-1.5
ADP2119-1.8
ADP2119-2.5
ADP2119-3.3
ADP2119-ADJ

Design Tools

ADP21xx Buck Regulator Design Tool

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
ADP2119ACPZ-1.0-R7 Material Declaration Reliability Data 10-Lead LFCSP (3mm x 3mm)
ADP2119ACPZ-1.2-R7 Material Declaration Reliability Data 10-Lead LFCSP (3mm x 3mm)
ADP2119ACPZ-1.5-R7 Material Declaration Reliability Data 10-Lead LFCSP (3mm x 3mm)
ADP2119ACPZ-1.8-R7 Material Declaration Reliability Data 10-Lead LFCSP (3mm x 3mm)
ADP2119ACPZ-2.5-R7 Material Declaration Reliability Data 10-Lead LFCSP (3mm x 3mm)
ADP2119ACPZ-3.3-R7 Material Declaration Reliability Data 10-Lead LFCSP (3mm x 3mm)
ADP2119ACPZ-R7 Material Declaration Reliability Data 10-Lead LFCSP (3mm x 3mm)
Wafer Fabrication Data

PCN-PDN Information

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Sample & Buy


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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

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.