ADM1073

PRODUCTION

ADM1073

-48 V Full Feature Hot Swap Controller

PRODUCTION

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Part Models 3

1ku List Price Starting From $2.84

Features

Precision In-Rush Linear Current Limit
Adjustable Soft Start In-Rush Current Limit Profiling
Max On-Time Modulated by FET Drain Voltage for Additional SOA Protection
Adjustable PWM Retry Scheme and Multiple Device Cascading

Precision Maximum On Time in Current Limit
Capability for Charging Large Capacitive Loads
Shunt Regulator Topology Allows For Very Large Transient Input Supplies
Precision UnderVoltage and OverVoltage Monitors with Separate UV and OV Pins and Programmable UV and OV Hysteresis

Additional Details

The ADM1073 is a full-feature, negative voltage, hot swap controller that allows boards to be safely inserted and removed from a live −48 V backplane. The part provides precise and robust current limiting, and protection against both transient and nontransient short circuits in overvoltage and undervoltage conditions. The ADM1073 can operate from a negative voltage of −18 V to −80 V and can tolerate transient voltages of up to −200 V.

Inrush current is limited to a programmable value by control-ling the gate drive of an external N-channel FET. The maximum current limit is set by the choice of the sense resistor, R_SENSE.

A built-in soft start function allows control of the inrush current profile by an external capacitor on the soft start (SS) pin.

An external capacitor on the TIMER pin determines the time for which the FET gate is controlled to be high when maximum inrush current flows. The ADM1073 employs a limited consecutive retry scheme, whereby, if the load capacitance is not fully charged within one attempt, the FET gate is pulled low and retries after a cooling period.

APPLICATIONS

Central office switching
Telecommunication and data communication equipment
−48 V distributed power systems
Negative power supply control
High availability servers
−48 V power supply modules
Disk arrays

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 3

1ku List Price Starting From $2.84

Documentation

Technical Documents 5

ADM1073: Full Feature-48 V Hot Swap Controller Data Sheet (Rev.B) 11/09/2006

UG-555: Using the ADM1073 Hot Swap Controller Evaluation Kit 06/03/2013

AN-694: Hot Swap and Blocking FET Control Using 2 x ADM1073 Hot Swap Controllers 11/21/2003

AN-805: Altering the ADM1073 Current Limit Level (Rev.0) 03/16/2006

Temperature monitor measures three thermal zones 12/11/2003

Reference Materials 1

Hot Swap Controllers 08/02/2023

Design Resources 3

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
ADM1073ARUZ	14-Lead TSSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
ADM1073ARUZ-REEL	14-Lead TSSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
ADM1073ARUZ-REEL7	14-Lead TSSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys