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ADM1070, ADM1070ART, ADM1070ART-REEL

Table of contents:
Info of ADM1070
Info of ADM1070ART
Info of ADM1070ART-REEL

ADM1070, ADM1070ART, ADM1070ART-REEL Selling Leads, Datasheet

MFG:Analog Devices Inc. Category:ICs, Integrated Circuits, Semiconductors Package Cooled:AD D/C:06+

ADM1070, ADM1070ART, ADM1070ART-REEL Datasheet download

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Part Number: ADM1070ART-REEL

Category: ICs, Integrated Circuits, Semiconductors

MFG: Analog Devices Inc.

Package Cooled: AD

D/C: 06+

Description: IC HOTSWAP CNTRL 48V SOT23-6

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ADM1070 General Description

The ADM1070 is a negative voltage hot swap controller that allows a board to be safely inserted and removed from a live 48 V backplane. The part achieves this by providing robust current limiting, protection against transient and nontransient short circuits and overvoltage and undervoltage conditions. The ADM1070 typically operates from a negative voltage of up to 80 V and can tolerate transient voltages of up to 200 V.

In-rush current is limited to a programmable value by controlling the gate drive of an external N-channel FET. The current limit can be controlled by the choice of the sense resistor, R_SENSE. Added control of the in-rush current is provided by an on-chip timer that uses pulsewidth modulation to allow the maximum current to flow for only 3% of the time. An autorestart occurs after a current limit timeout. After seven successive autorestarts, the fault will be latched and the part goes into shutdown with the result that the external FET is disabled until the power is reset.

The ADM1070 also features single-pin undervoltage and over-voltage detection. The FET is turned off if a nontransient voltage less than the undervoltage threshold, typically 36 V, or greater than the overvoltage threshold, typically 77 V, is detected on the UV/OV Pin. The operating voltage window of the
ADM1070 is programmable and is determined by the ratio R1/R2. Time filtering on the undervoltage and overvoltage detection and current limiting is programmable via the TIMER Pin. An external capacitor connected between the TIMER Pin and VEE determines the undervoltage/overvoltage time filter and the timeout in current limit. If the pin is tied to VEE, the time filter values and the current limit timeout revert to default figures. The ADM1070 is fabricated using BiCMOS technology for minimal power consumption. The part is available in a small 6-Lead SOT-23 package.

ADM1070 Maximum Ratings

Supply Voltage (V_DDV_EE) . . . . . . . . . . . . . 0.3 V to 200.0 V
Maximum Shunt Supply Voltage, V_SS . . . . . . . . . . . . . . . 16 V
SENSE Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 V to +16 V
GATE Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +16 V
UV/OV Pin . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +15 V
TIMER Pin . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +10 V
Maximum Junction Temperature . . . . . . . . . . . . . . . . .125°C
Temperature Range . . . . . . . . . . . . . . . . . . 40°C to +85°C
Continuous Power Dissipation . . . . . . . . . . . . . . . . 282 mW
Storage Temperature Range . . . . . . . . . . .65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . 300°C

ADM1070 Features

Allows Safe Board Insertion and Removal from a Live 48 V Backplane
Typically Operates from 36 V to 80 V
Tolerates Transients up to 200 V (Limited by External Components)
Accurate Programmable Linear Current Limit for In-Rush Control and Short Circuit Protection
Programmable Timeout in Current Limit
Limited Consecutive Retry:
   Auto-Restart after Current Limit Timeout
   Shutdown after Seven Consecutive Auto Restarts
   Provides Immunity from Step Induced Current Spikes
Default Timing Provided with no TIMER Capacitor
Single Pin Undervoltage/Overvoltage Detection
Programmable Operating Voltage Window
Programmable Undervoltage/Overvoltage Time Filter
Small 6-Lead SOT-23 Package

ADM1070 Typical Application

Central Office Switching
48 V Distributed Power Systems
Negative Power Supply Control
Hot Board Insertion
Electronic Circuit Breaker
High Availability Servers
Programmable Current Limiting Circuit
48 V Power Supply Modules

ADM1070 Connection Diagram

ADM1070ART-REEL Parameters

Technical/Catalog Information	ADM1070ART-REEL
Vendor	Analog Devices Inc.
Category	ICs, Integrated Circuits, Semiconductors
Mounting Type	Surface (SMD, SMT)
Package Name	SOT-23-6
Application	Hot Board Insertion
Voltages Switched	-36V ~ -80V
Internal Switch(s)	No
Special Features	Circuit Breaker Function
Special Features	Programmable
Number of Outputs	1 [Nom]
Operating Temperature	-40 °C [Min]
Operating Temperature	85 °C [Max]
Packaging	Tape & Reel
RoHS Status	RoHS Non-Compliant
Other Names	ADM1070ART REEL ADM1070ARTREEL

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