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ADP5023:  Dual 3 MHz, 800 mA Buck Regulator with One 300 mA LDO

Product Status:Recommended for New Designs
Data
Sheet
ADP5023 Data Sheet Rev C, 01/2013 (pdf 4574kB)

Product Details

Product Status:Recommended for New Designs
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The ADP5023 combines two high performance buck regulators and one low dropout (LDO) regulator in a small, 24-lead 4 mm × 4 mm LFCSP to meet demanding performance and board space requirements.

The high switching frequency of the buck regulators enables tiny multilayer external components and minimizes the board space. When the MODE pin is set high, the buck regulators operate in forced PWM mode. When the MODE pin is set low, the buck regulators operate in PWM mode when the load current is above a predefined threshold. When the load current falls below a predefined threshold, the regulator operates in power save mode (PSM) improving the light-load efficiency.

The two bucks operate out of phase to reduce the input capaci-tor requirement. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5023 LDO extends the battery life of portable devices. The ADP5023 LDO maintains power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.

Regulators in the ADP5023 are activated though dedicated enable pins. The default output voltages can be externally set in the adjustable version or factory programmable to a wide range of preset values in the fixed voltage version.

APPLICATIONS

  • Power for processors, ASIC, FPGAs, and RF chipsets
  • Portable instrumentation and medical devices
  • Space constrained devices

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FEATURES and BENEFITS

  • Main input voltage range:
    2.3 V to 5.5 V
  • Two 800 mA buck regulators and one 300 mA LDO
  • 24-lead, 4 mm × 4 mm LFCSP package
  • Regulator accuracy: ±1.8%
  • Factory programmable or external adjustable VOUTx
  • 3 MHz buck operation with forced PWM and auto PWM/PSM modes
  • BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V
  • LDO: output voltage range from 0.8 V to 5.2 V
  • LDO: input supply voltage from 1.7 V to 5.5 V
  • LDO: high PSRR and low output noise

Typical Application Circuit for ADP5023

ADP5023 Diagram
Typical Applications and Other Diagrams

Documentation

Title Content Type File Type
ADP5023: Dual 3 MHz, 800 mA Buck Regulators with One 300 mA LDO Data Sheet (Rev C, 01/2013) (pdf, 4574 kB) Data Sheets PDF
UG-271: Evaluation Board for the ADP5023/ADP5024/ADP5034/ADP5037 Micro Power Management Unit (PMU)  (pdf, 442 kB) User Guides PDF
Integrated Power Solutions for Xilinx Spartan-3 FPGAs  (pdf, 2253 kB)
Combining multiple switching regulators and LDOs into a single package enables very small, flexible, highly efficient power management solutions for powering FPGAs. 		Solutions Bulletins PDF
Integrated Power Solutions for Altera Cyclone FPGAs  (pdf, 1716 kB)
Combining multiple switching regulators and LDOs into a single package enables very small, flexible, highly efficient power management solutions for powering FPGAs. 		Solutions Bulletins PDF
Glossary of EE Terms Glossary HTML

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.

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Price, packaging, availability

ADP5023 Model Options
Model Package Pins Temp.
Range 		Packing,
Qty 		Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP5023ACPZ-1-R7 Status: Production 24 ld LFCSP (4x4x.75mm w/2.10mm EP) 24 Ind Reel, 1500 - $1.59 Y  Material Info Notify Me Purchase Sample
ADP5023ACPZ-2-R7 Status: Production LFCSP:LEADFRM CHIP SCALE 24 Ind Reel, 1500 - $1.59 Y  Material Info Notify Me Purchase Sample
ADP5023ACPZ-R2 Status: Production LFCSP:LEADFRM CHIP SCALE 24 Ind Reel, 250 - - Y  Material Info Notify Me Purchase
ADP5023ACPZ-R7 Status: Production 24 ld LFCSP (4x4x.75mm w/2.10mm EP) 24 Ind Reel, 1500 - $1.59 Y  Material Info Notify Me 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.

ADP5023 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP5023CP-EVALZ Status: Production Evaluation Board $100.00 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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