ADP2108
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ADP2108

Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter

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LTspice ADP2108 - Step-Down (Buck) Regulators Download 0.87 KB
Part Models 15
1ku List Price Starting From $0.80
Features
  • Peak efficiency: 95%
  • 3 MHz fixed frequency operation
  • Typical quiescent current: 18 μA
  • Maximum load current: 600 mA
  • Input voltage: 2.3 V to 5.5 V
  • Uses tiny multilayer inductors and capacitors
  • Current mode architecture for fast load and line transient response
  • 100% duty cycle low dropout mode
  • Internal synchronous rectifier
  • Internal soft start
  • See data sheet for additional Information
Additional Details
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The ADP2108 is a high efficiency, low quiescent current step-down dc-to-dc converter manufactured in two different packages. The total solution requires only three tiny external components. It uses a proprietary, high speed current mode, constant frequency PWM control scheme for excellent stability and transient response. To ensure the longest battery life in portable applications, the ADP2108 has a power save mode that reduces the switching frequency under light load conditions.

The ADP2108 runs on input voltages of 2.3 V to 5.5 V, which allows for single lithium or lithium polymer cell, multiple alkaline or NiMH cell, PCMCIA, USB, and other standard power sources. The maximum load current of 600 mA is achievable across the input voltage range.

The ADP2108 is available in fixed output voltages of 3.3 V, 3.0 V, 2.5 V, 2.3 V, 1.82 V, 1.8 V, 1.5 V, 1.3 V, 1.2 V, 1.1 V, and 1.0 V. All versions include an internal power switch and synchronous rectifier for minimal external part count and high efficiency. The ADP2108 has an internal soft start and is internally compensated. During logic controlled shutdown, the input is disconnected from the output and the ADP2108 draws less than 1 μA from the input source.

Other key features include undervoltage lockout to prevent deep battery discharge and soft start to prevent input current over-shoot at startup. The ADP2108 is available in 5-ball WLCSP and 5-lead TSOT packages. The ADP2109 provides the same features and operations as the ADP2108 and has the additional function of a discharge switch in the WLCSP package.

APPLICATIONS

  • PDAs and palmtop computers
  • Wireless handsets
  • Digital audio, portable media players
  • Digital cameras, GPS navigation units
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file View Data Sheet (Rev.H)
Documentation View All Documentation
LTspice ADP2108 - Step-Down (Buck) Regulators Download 0.87 KB
Part Models 15
1ku List Price Starting From $0.80
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ADP2108

Documentation

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Data Sheet

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UPDATED 06/06/2008
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ADP2108: Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter Data Sheet (Rev.H)

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UPDATED 04/22/2010
Japanese

ADP2108: 小型、600 mA、3 MHz、ステップダウンDC/DCコンバータ (Rev.D)

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1684 kB
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Evaluation Design File

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UPDATED 07/06/2009
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EVAL-ADP2108: Evaluation Board for 600 mA, 3 MHz Buck Regulator redirect icon

902 kB

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UPDATED 07/06/2009
Chinese
• EVAL-ADP2108：600 mA、3 MHz降压调节器评估板 redirect icon

902 kB

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UPDATED 04/12/2010
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Power Management RedyKit redirect icon

1124 kB

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Application Note

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UPDATED 04/27/2010
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AN-1072: How to Successfully Apply Low Dropout Regulators redirect icon

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UPDATED 11/08/2010
Chinese
AN-1072: 在系统中成功运用低压差稳压器 (Rev.0) redirect icon

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UPDATED 04/27/2010
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低ドロップアウト・レギュレータの活用方法 (Rev.AN-1072) redirect icon

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UPDATED 06/04/2024
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AN-1211: Powering the AD9268 Dual Channel 16-Bit, 125 MSPS Analog-to-Digital Converter with the ADP2114 Synchronous Step-Down DC-to-DC Regulator for Increased Efficiency redirect icon

User Guide

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UPDATED 12/04/2009
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UG-039: RedyKit User Guide for the ADP2108 Buck Converter redirect icon

143 kB

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UPDATED 12/04/2009
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• UG-039：用于降压转换器ADP2108的RedyKit用户指南 redirect icon

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Technical Articles

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UPDATED 07/01/2009
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Optimizing Power Systems for Portable Electronic Devices redirect icon

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UPDATED 06/17/2015
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Documentation

Documentation

Technical Documents 8
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Data Sheet 1

ADP2108: Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter Data Sheet (Rev.H)

User Guide 1

UG-039: RedyKit User Guide for the ADP2108 Buck Converter

Application Note 2

AN-1072: How to Successfully Apply Low Dropout Regulators
AN-1211: Powering the AD9268 Dual Channel 16-Bit, 125 MSPS Analog-to-Digital Converter with the ADP2114 Synchronous Step-Down DC-to-DC Regulator for Increased Efficiency

Technical Articles 1

Optimizing Power Systems for Portable Electronic Devices

Evaluation Design File 2

EVAL-ADP2108: Evaluation Board for 600 mA, 3 MHz Buck Regulator
Power Management RedyKit

Frequently Asked Question 1

FAQ

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADP2108ACBZ-1.0-R7 5-Ball WLCSP (1.02mm x 1.45mm) external-link
  • HTML
  • Material Declaration external-link
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  • Reliablity Data external-link
ADP2108ACBZ-1.2-R7 5-Ball WLCSP (1.02mm x 1.45mm) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108ACBZ-1.5-R7 5-Ball WLCSP (1.02mm x 1.45mm) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108ACBZ-1.8-R7 5-Ball WLCSP (1.02mm x 1.45mm) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108ACBZ-2.5-R7 5-Ball WLCSP (1.02mm x 1.45mm) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108ACBZ-3.0-R7 5-Ball WLCSP (1.02mm x 1.45mm) external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108ACBZ-3.3-R7 5-Ball WLCSP (1.02mm x 1.45mm) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108AUJZ-1.0-R7 5-Lead TSOT external-link
  • HTML
  • Material Declaration external-link
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  • Reliablity Data external-link
ADP2108AUJZ-1.2-R7 5-Lead TSOT external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108AUJZ-1.3-R7 5-Lead TSOT external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108AUJZ-1.5-R7 5-Lead TSOT external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108AUJZ-1.8-R7 5-Lead TSOT external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108AUJZ-2.5-R7 5-Lead TSOT external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108AUJZ-3.0-R7 5-Lead TSOT external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
ADP2108AUJZ-3.3-R7 5-Lead TSOT external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link

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Product Lifecycle

PCN

Feb 28, 2012

- 11_0175

Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

ADP2108ACBZ-1.0-R7

PRODUCTION

ADP2108ACBZ-1.2-R7

PRODUCTION

ADP2108ACBZ-1.5-R7

PRODUCTION

ADP2108ACBZ-1.8-R7

PRODUCTION

ADP2108ACBZ-2.5-R7

PRODUCTION

ADP2108ACBZ-3.0-R7

PRODUCTION

ADP2108ACBZ-3.3-R7

PRODUCTION

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PCN11_0175_Form

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Material_Report

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Qualification Report Summary

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Detailed Parts List

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Jan 26, 2010

- 10_0007

Halogen Free Material Change for TSOT Products

ADP2108AUJZ-1.0-R7

PRODUCTION

ADP2108AUJZ-1.2-R7

PRODUCTION

ADP2108AUJZ-1.3-R7

PRODUCTION

ADP2108AUJZ-1.5-R7

PRODUCTION

ADP2108AUJZ-1.8-R7

PRODUCTION

ADP2108AUJZ-2.5-R7

PRODUCTION

ADP2108AUJZ-3.0-R7

PRODUCTION

ADP2108AUJZ-3.3-R7

PRODUCTION

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Material_Report

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PCN10_0007_Form

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TSOT Qualification Data.doc

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Product Lifecycle

PCN

Feb 28, 2012

- 11_0175

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Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

ADP2108ACBZ-1.0-R7

PRODUCTION

ADP2108ACBZ-1.2-R7

PRODUCTION

ADP2108ACBZ-1.5-R7

PRODUCTION

ADP2108ACBZ-1.8-R7

PRODUCTION

ADP2108ACBZ-2.5-R7

PRODUCTION

ADP2108ACBZ-3.0-R7

PRODUCTION

ADP2108ACBZ-3.3-R7

PRODUCTION

pdf

PCN11_0175_Form

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xls

Material_Report

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Qualification Report Summary

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Detailed Parts List

Download
Jan 26, 2010

- 10_0007

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Halogen Free Material Change for TSOT Products

ADP2108AUJZ-1.0-R7

PRODUCTION

ADP2108AUJZ-1.2-R7

PRODUCTION

ADP2108AUJZ-1.3-R7

PRODUCTION

ADP2108AUJZ-1.5-R7

PRODUCTION

ADP2108AUJZ-1.8-R7

PRODUCTION

ADP2108AUJZ-2.5-R7

PRODUCTION

ADP2108AUJZ-3.0-R7

PRODUCTION

ADP2108AUJZ-3.3-R7

PRODUCTION

xls

Material_Report

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PCN10_0007_Form

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TSOT Qualification Data.doc
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

EVAL-ADP2108

ADP2108 Evaluation Board

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EVAL-ADP2108

ADP2108 Evaluation Board

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EVAL-ADP2108
ADP2108 Evaluation Board

Features and Benefits

  • Two fully assembled and tested evaluation boards per kit
  • Full set of IC voltage options in each kit
  • 3 samples of each IC voltage option packed in separate antistatic bags
  • Kit allows the user to quickly evaluate all IC voltage options
  • Only need to order one kit per product family
Buy Now View Details

Product Detail

This product has individual evaluations boards at specific voltages or with specific features as well as the RedyKit&tm;. The RedyKit simplifies product evaluation by providing two assembled and tested evaluation boards, plus a full set of product (voltage) options for an IC regulator. All the IC options come sorted and stored in the kit with the Analog Devices part number clearly printed on each antistatic zip-top bag.

Simple device measurements such as line and load regulation, dropout, and ground current can be demonstrated with just a single voltage supply, a voltmeter, a current meter, and load resistors.

Resources

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EVAL-ADP2108: Evaluation Board for 600 mA, 3 MHz Buck Regulator Download

902 kB

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UG-039: RedyKit User Guide for the ADP2108 Buck Converter Download

143 kB

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Evaluation Kits1

EVAL-ADP2108

ADP2108 Evaluation Board
Tools & Simulations

Tools & Simulations 3

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

spice tool Lt Spice

ADP2108 - Step-Down (Buck) Regulators Download

0.87 K
Reference Designs

Reference Designs 1

Functional Block Diagram of Universal Power Supply Module

CN0190

Robust, Multivoltage, High Efficiency, 25 W Universal Power Supply Module with 6 V to 14 V Input

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CN0190

Robust, Multivoltage, High Efficiency, 25 W Universal Power Supply Module with 6 V to 14 V Input

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Circuits from the lab

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Robust, Multivoltage, High Efficiency, 25 W Universal Power Supply Module with 6 V to 14 V Input

Features and Benefits

  • 12 different voltage and current output conditions
  • Configure the all other channels to be powered off
View Detailed Reference Design external link

Part Used 16

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Design & Integration Tools

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CN0190 Design & Integration Files link icon

3649 kB

Reference Designs1

Functional Block Diagram of Universal Power Supply Module

CN0190

Robust, Multivoltage, High Efficiency, 25 W Universal Power Supply Module with 6 V to 14 V Input

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