High Voltage Input Protection Device
The ADM1270 is a current-limiting controller that provides 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 inrush current, when powering on the system, via an external P-channel field effect transistor (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 prevents reverse current flow in case of a reverse polarity connection, which can damage the load or the ADM1270. The ADM1270 is available in a 3 mm × 3 mm, 16-lead LFCSP and a 16-lead QSOP.
- Industrial modules
- Battery-powered/portable instrumentation
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Simple device measurements, such as over voltage, undervoltage, and overcurrent protection can be demonstrated with just a single voltage source, a voltmeter, an ammeter, and load resistors.
- Controls supply voltages from 4 V to 60 V
- Gate drive for low voltage drop reverse supply protection
- Gate drive for P-channel FETs
- In-rush current limiting control
- Adjustable current limit
- Foldback current limiting
- Automatic retry or latch-off on current fault
- Programmable current-limit timer for SOA
- Power-good and Fault outputs
- Analog UV and OV protection
- 16-lead 3x3mm LFCSP package
- 16-lead QSOP package
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.
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.