Overview
Features and Benefits
- Controls supply voltages from 4 V to 60 V
- Gate drive for low voltage drop reverse supply protection
- Gate drive for P-channel FETs
- Inrush current limiting control
- Adjustable current limit
- Foldback current limiting
- Automatic retry or latch-off on current fault
- Programmable current-limit timer for safe operating area (SOA)
- Power-good and fault outputs
- Analog undervoltage (UV) and overvoltage (OV) protection
- 16-lead, 3 mm × 3 mm LFCSP
- 16-lead QSOP
Product Details
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.
Applications
- Industrial modules
- Battery-powered/portable instrumentation
Product Lifecycle
Recommended for New Designs
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.
Evaluation Kits (1)
Documentation & Resources
Tools & Simulations
Design Tool
ADM1270 Design Worksheet Tool
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADM1270ACPZ-R2 | Material Declaration | Reliability Data | 16-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADM1270ACPZ-R7 | Material Declaration | Reliability Data | 16-Lead LFCSP (3mm x 3mm w/ EP) | |
| ADM1270ARQZ | Material Declaration | Reliability Data | 16-Lead QSOP | |
| ADM1270ARQZ-R7 | Material Declaration | Reliability Data | 16-Lead QSOP | |
| Wafer Fabrication Data |
Sample & Buy
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.