ADP1822
PRODUCTIONPWM, Step-Down DC-to-DC Controller with Margining and Tracking
- Part Models
- 1
- 1ku List Price
- Starting From $2.47
Overview
- Wide power input voltage range: 1 V to 24 V
- Chip supply voltage range: 3.7 V to 5.5 V
- Wide output voltage range: 0.6 V to 85% of input voltage
- 1% accuracy, 0.6 V reference voltage
- Output voltage margining control
- Output voltage tracking
- All N-channel MOSFET
- 300 kHz, 600 kHz, or up to 1.2 MHz synchronized frequency
- No current sense resistor required
- Power-good output
- Programmable soft start with reverse current protection
- Current-limit protection
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
Documentation
Data Sheet 1
User Guide 1
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 |
|---|---|---|---|
| ADP1822ARQZ-R7 | 24-Lead QSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 26, 2010 - 10_0001 Halogen Free Material Change for QSOP Products |
||
| ADP1822ARQZ-R7 | PRODUCTION | |
|
Dec 21, 2009 - 06_0159 Qualification of 8" S6 wafer fab process at Analog Devices, Limerick, Ireland. |
||
| ADP1822ARQZ-R7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & Simulations
ADP182x Buck Designer Tool
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
Open ToolEvaluation Kits
ADP1822 Evaluation Board
Resources
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