ADM1073

PRODUCTION

-48 V Full Feature Hot Swap Controller

Data Sheet (Rev. B) Product Selection Table

Part Models: 3
1ku List Price: Starting From $2.84

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Overview

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

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

Part Models: 3
1ku List Price: Starting From $2.84

Documentation

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

Part Models	Product Lifecycle	PCN

Apr 5, 2021 - 21_0035 Amkor Philippines as an Alternate Site for TSSOP_4.4
		PCN21_0035_Form Material_Report Qualification Results Summary Other
ADM1073ARUZ	PRODUCTION
ADM1073ARUZ-REEL	PRODUCTION
ADM1073ARUZ-REEL7	PRODUCTION
Jan 20, 2012 - 11_0218 Halogen Free Material Change for Certain TSSOP Products at Carsem
		PCN11_0218_Form Material_Report Qualification Report Summary
ADM1073ARUZ	PRODUCTION
ADM1073ARUZ-REEL	PRODUCTION
ADM1073ARUZ-REEL7	PRODUCTION