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ADP2119:  2A, 1.2MHz Synchronous Step-Down DC-to-DC Regulator

Product Details

Product Status:Recommended for New Designs

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 equipments
  • Industrial and instrumentation
  • Consumer electronics
  • Medical appliances

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
  • ±1.5% output accuracy
  • 1.2MHz fixed switching frequency
  • Synchronizable between 1.0MHz and 2MHz
  • Selectable PWM or PFM mode operation
  • Current mode architecture
  • Precision threshold enable input
  • Power-good flag
  • Voltage tracking input
  • Integrated soft start
  • Internal compensation
  • Start up with precharged output
  • UVLO, OVP, OCP, and thermal shutdown
  • Available in 10-lead 3mm x 3mm LFCSP_WD package

Typical Application Circuit

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADP21xx Buck Regulator Design Tool  (zip, 0)
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
ADIsim Design/Simulation Tools ZIP
Download files for ADIsimPower™ Voltage Regulator Design Tool
The individual Excel-based voltage regulator design tools used in ADIsimPower™.
ADIsim Design/Simulation Tools HTML
ADIsimPower™ Voltage Regulator Design Tool
This expert design tool produces custom DC-DC converter designs in about a minute. The user enters 5 inputs and chooses to optimize for efficiency, PCB space, cost, or part count. Output is a complete schematic, BOM, efficiency plot, and performance summary. A PDF summary and a blank PCB is offered for each design to facilitate fast prototyping to verify the design.
ADIsim Design/Simulation Tools HTML
Launch of ADIsimPower Voltage Regulator Selection Vin (min) V Vout V   Find Solutions
Vin (max) V Iout A

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADP2119 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP2119ACPZ-1.0-R7 Status: Production 10 ld LFCSP (3x3mm) 10 Ind Reel, 1500 - $1.14 Y  Material Info PCN Purchase Sample
ADP2119ACPZ-1.2-R7 Status: Production 10 ld LFCSP (3x3mm) 10 Ind Reel, 1500 - $1.14 Y  Material Info PCN Purchase Sample
ADP2119ACPZ-1.5-R7 Status: Production 10 ld LFCSP (3x3mm) 10 Ind Reel, 1500 - $1.14 Y  Material Info PCN Purchase Sample
ADP2119ACPZ-1.8-R7 Status: Production 10 ld LFCSP (3x3mm) 10 Ind Reel, 1500 - $1.14 Y  Material Info PCN Purchase Sample
ADP2119ACPZ-2.5-R7 Status: Production 10 ld LFCSP (3x3mm) 10 Ind Reel, 1500 - $1.14 Y  Material Info PCN Purchase Sample
ADP2119ACPZ-3.3-R7 Status: Production 10 ld LFCSP (3x3mm) 10 Ind Reel, 1500 - $1.14 Y  Material Info PCN Purchase Sample
ADP2119ACPZ-R7 Status: Production 10 ld LFCSP (3x3mm) 10 Ind Reel, 1500 - $1.14 Y  Material Info PCN Purchase Sample
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADP2119 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP2119-EVALZ Status: Production Evaluation Board $60.00 Yes -

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.

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