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ADP5020:  Power Management Unit for Imaging Modules

Product Details


The ADP5020 provides a highly integrated power solution that includes all of the power circuits necessary for a digital imaging module. It comprises two step-down dc-to-dc converters, one LDO, and a power sequence controller. All dc-to-dc converters integrate power pMOSFETs and nMOSFETs, making the system simpler and more compact and reducing the cost. The ADP5020 has digitally programmed output voltages and buck converters that can source up to 600 mA. A fixed frequency operation of 3 MHz enables the use of tiny inductors and capacitors. The buck converters use a voltage mode, constant-frequency PWM control scheme, and the synchronous rectification is implemented to reduce the power loss. The Buck 1 regulator operates at up to 93% efficiency.

The ADP5020 provides high performance, reduces component count and size, and is lower in cost when compared to conventional designs.

The ADP5020 runs on input voltage from 2.4 V to 5.5 V and supports one-cell lithium-ion (Li+) batteries. The high perfor-mance LDO maximizes noise suppression. The ADP5020 can be activated via an I2C® interface or through a dedicated enable input. During logic-controlled shutdown, the input is disconnected from the output source, and the part draws 1 μA typical from the input source. Other key features include undervoltage lockout to prevent deep-battery discharge and soft start to prevent input current overshoot at startup. The ADP5020 is available in a 20-lead LFCSP.

FEATURES and BENEFITS

  • Input voltage range: 2.4 V to 5.5 V
  • Low standby current: 1 μA
  • Switching frequency: 3 MHz
  • I2C interface
  • Synchronous Buck 1 regulator: 600 mA
  • Synchronous Buck 2 regulator: 250 mA
  • Low dropout regulator (LDO): 150 mA
  • Internal compensation
  • Internal soft start
  • Thermal shutdown
  • 20-lead 4 mm × 4 mm LFCSP

ADP5020 Functional Block Diagram

Documentation

Title Content Type File Type
ADP5020: Power Management Unit for Imaging Modules Data Sheet (Rev 0, 05/2009) (pdf, 1087 kB) Data Sheets PDF
AN-1210: Powering the AD9272 Octal Ultrasound ADC/LNA/VGA/AAF with the ADP5020 Switching Regulator PMU for Increased Efficiency  (pdf, 201 kB) Application Notes PDF
Isolating Power in Communication Bus and Gate Drive Applications
Starting with a communications application overview of small power options through the process of selecting the right power products this webcast is a great resource for your communications applications designs.
Webcasts WEBCAST
Powering High-Speed Analog-to-Digital Converters with Switching Power Supplies
(Techonline, May 2009)
Technical Articles HTML
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
RAQs index Rarely Asked Questions HTML
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

ADP5020 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP5020ACBZ-R7 Status: Obsolete CHIPS W/SOLDER BUMPS/WLSCP 25 Ind Reel, 3000 - - Y  Material Info Notify Me Contact ADI
ADP5020ACPZ-R7 Status: Production 20 ld LFCSP 4x4mm (2.5EP 20 Ind Reel, 1500 - $1.50 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.

ADP5020 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP5020CP-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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