Overview

Features and Benefits

  • Main input voltage range: 2.3 V to 5.5 V
  • Two 1200 mA buck regulators and two 300 mA LDOs
  • 24-lead, 4 mm × 4 mm LFCSP or 28-lead TSSOP 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 5.2 V
  • LDO1/LDO2: input supply voltage from 1.7 V to 5.5 V
  • LDO1/LDO2: high PSRR and low output noise

Product Details

The ADP5034 combines two high performance buck regulators and two low dropout (LDO) regulators in a small, 24-lead 4 mm × 4 mm LFCSP (QFN) 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 is around the nominal value. 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 ADP5034 LDOs extend the battery life of portable devices. The ADP5034 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 ADP5034 are activated though dedicated enable pins. The default output voltages can be externally set in the adjustable version, or factory programmable in the fixed voltage version, and can be set to a wide range of preset values

APPLICATIONS

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

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 (1)

Tools & Simulations

Design Tools

ADIsimPower™ Voltage Regulator Design Tool

ADIsimPower is the fastest and most accurate Power Management design tool. ADI's Design Center lets you design your power circuits in three easy steps.

5V uPMU BuckDesigner

Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

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

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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.


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Evaluation Boards Pricing displayed is based on 1-piece.
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.