ADP1822

PWM, Step-Down DC-to-DC Controller with Margining and Tracking
Manufactured by:

Product Details

The ADP1822 is a versatile and inexpensive synchronous voltage-mode PWM step-down controller. It drives an all N-channel power stage to regulate an output voltage as low as 0.6 V.

The ADP1822 regulated output can track another power supply and can be dynamically adjusted up or down with the controller’s margining-control inputs, making it ideal for high reliability applications. It is well suited for a wide range of high power applications, such as DSP power and processor core power in telecommunications, medical imaging, high performance servers, and industrial applications. It operates from a 3.7 V to 5.5 V supply with power input voltage ranging from 1.0 V to 24 V.

The ADP1822 can operate at any frequency between 300 kHz and 1.2 MHz, either by synchronizing with an external source or an internally generated, logic-controlled clock of 300 kHz or 600 kHz. It includes an adjustable soft start to allow sequencing and quick power-up while preventing input inrush current. Output reverse-current protection at startup prevents excessive output voltage excursions. The adjustable, virtually lossless current-limit scheme reduces external part count and improves efficiency.

The ADP1822 operates over the −40°C to +125°C junction temperature range and is available in a 24-lead QSOP package.

Applications

  • Telecommunications and networking systems
  • High performance servers
  • Medical imaging systems
  • DSP core power supplies
  • Microprocessor core power supplies
  • Mobile communication base stations
  • Distributed power

Product Lifecycle

checked Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits

X +

Product Details

This describes the design, operation, and test of the ADP1822 standard evaluation board. In all tests, the board is operated from an input voltage range of 9 V to 15 V, and generates up to 10 A at VOUT = 1.8 V. The switching frequency is fixed at 300 kHz.

Product Details

In order to get the correct unpopulated evaluation board with an appropriate Bill of Materials and Schematic, you need to use the button for "Request Evaluation Board" from within the design tool. Make sure the design tool is in a state that matches your desired power requirements.

This will create a template email that will request from us the proper blank evaluation board for that ADI part and your application's power parameters.


Note: Some parts have multiple blank boards for high/low current or for different topologies (Boost, SEPIC, SEPIC-Cuk), while other blank boards support multiple ADI parts. This is why it is important to run the design tool with your parameters before making your email request from the tool.

Tools & Simulations

X +

Design Tools

Design Resources

X +

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.

ADP1822 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Discussions

X+

Didn't find what you were looking for?

Reviews

X+

Rate this Product

Sample & Buy

X+
Back
Check Inventory

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.


Price Table Help