The ADM1270 is a current limiting controller that is intended to provide inrush current limiting and overcurrent protection for modular or battery powered systems. When circuit boards are inserted into a live backplane, discharged supply bypass capacitors draw large transient currents from the backplane power bus as they charge. These transient currents can cause permanent damage to connector pins, as well as dips on the backplane supply that can reset other boards in the system.
The ADM1270 is designed to control the in-rush current during powering on of a system via an external P-channel FET.
To protect the system from a reverse polarity input supply, there is a provision made to control an additional external P-channel FET. This feature is used to prevent reverse current flow that could damage the load or the ADM1270.
The ADM1270 is available in a 3x3 16-lead LFCSP and a 16-lead QSOP package.
|Title||Content Type||File Type|
|ADM1270: High Voltage Input Protection Device Preliminary Data Sheet (Rev PrE, 03/2014) (pdf, 295 kB)||Data Sheets|
|Glossary of EE Terms||Glossary||HTML|
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