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ADP5037:  Dual 3 MHz, 800 mA Buck Regulators with Two 300 mA LDOs

Product Details

Product Status:Recommended for New Designs

The ADP5037 combines two high performance buck regulators and two low dropout (LDO) regulators 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 and the load is above a predefined threshold, the buck regulators operate in PWM mode. 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 ADP5037 LDOs extend the battery life of portable devices. The ADP5037 LDOs maintain power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.

Regulators in the ADP5037 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.

FEATURES and BENEFITS

  • Main input voltage range: 2.3 V to 5.5 V
  • Two 800 mA buck regulators and two 300 mA LDOs
  • 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
  • LDO1/LDO2: output voltage range from 0.8 V to 4.75 V
  • LDO1/LDO2: low input supply voltage from 1.7 V to 5.5 V
  • LDO1/LDO2: high PSRR and low output noise

Functional Block Diagram for ADP5037

Documentation

Title Content Type File Type
ADP5037: Dual 3 MHz, 800 mA Buck Regulators with Two 300 mA LDOs Data Sheet (Rev D, 05/2013) (pdf, 4586 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 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 FPGAs  (pdf, 2460 kB) Solutions Bulletins PDF
Glossary of EE Terms Glossary HTML

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Price, packaging, availability

ADP5037 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP5037ACPZ-1-R7 Status: Production 24 ld LFCSP (4x4x.75mm w/2.10mm EP) 24 Ind Reel, 1500 - $1.69 Y  Material Info PCN Purchase Sample
ADP5037ACPZ-2-R7 Status: Production LFCSP:LEADFRM CHIP SCALE 24 Ind Reel, 1500 - $1.69 Y  Material Info PCN Purchase Sample
ADP5037ACPZ-3-R7 Status: Production LFCSP:LEADFRM CHIP SCALE 24 Ind Reel, 1500 - $1.69 Y  Material Info PCN Purchase Sample
ADP5037ACPZ-R7 Status: Production 24 ld LFCSP (4x4x.75mm w/2.10mm EP) 24 Ind Reel, 1500 - $1.69 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.

ADP5037 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP5037CP-EVALZ Status: Production Evaluation Board $49.00 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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