MAX5079EUD+ by Analog Devices

ORing MOSFET Controller with Ultra-Fast 200ns Turn-Off

Status: Active
Series: MAX5079
RoHS: Unknown
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The MAX5079 ORing MOSFET controller replaces ORing diodes in high-reliability redundant, parallel-connected power supplies. Despite their low forward-voltage drop, ORing Schottky diodes cause excessive power dissipation at high currents. The MAX5079 allows for the use of low-on-resistance n-channel power MOSFETs to replace the Schottky diodes. This results in low power dissipation, smaller size, and elimination of heatsinks in high-power applications. The MAX5079 operates from 2.75V to 13.2V and includes a charge pump to drive the high-side n-channel MOSFET. Operation down to 1V is possible if an auxiliary voltage of at least 2.75V is available. When the controller detects a positive voltage difference between IN and BUS, the n-channel MOSFET is turned on. The MOSFET is turned off as soon as the MAX5079 sees a negative potential at IN with respect to the BUS voltage, and is automatically turned back on when the positive potential is restored. Under fault conditions, the ORing MOSFET's gate is pulled down with a 1A current, providing an ultra-fast 200ns turn-off. The reverse voltage turn-off threshold is externally adjustable to avoid unintentional turn-off of the ORing MOSFET due to glitches at IN or BUS caused by hot plugging the power supply. Additional features include an OVP flag to facilitate shutdown of a failed power supply due to an overvoltage condition, and a PGOOD signal that indicates if VIN is either below the undervoltage lockout or VBUS is in an overvoltage condition. The MAX5079 operates over the -40°C to +85°C temperature range and is available in a space-saving 14-pin TSSOP package.

Prices starting from US$4.85


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$5.12
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Logo for element14 element14 US$6.04
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Features

Drives External MOSFETs Reducing Power Dissipation and Board Space 2.75V to 13.2V Input ORing Voltage 1V to 13.2V Input ORing Voltage with 2.75V AuxiliaryVoltage 14-Pin TSSOP Package
2.75V to 13.2V Input ORing Voltage
1V to 13.2V Input ORing Voltage with 2.75V AuxiliaryVoltage
14-Pin TSSOP Package
Protection Features Increase System Reliability 2A MOSFET Gate Pulldown Current During Fault Condition Ultra-Fast 200ns, MOSFET Turn-Off During Fault Condition Supply Undervoltage and Bus Overvoltage Detection Power-Good (PGOOD) and Overvoltage (OVP) Outputs for Fault Detection
2A MOSFET Gate Pulldown Current During Fault Condition
Ultra-Fast 200ns, MOSFET Turn-Off During Fault Condition
Supply Undervoltage and Bus Overvoltage Detection
Power-Good (PGOOD) and Overvoltage (OVP) Outputs for Fault Detection

Specifications

Reverse Current Protect. Yes
Under Voltage Protect Yes
Charge Pump Cap. No
Soft Start Yes
Enable No
Fault Indicator Yes
Package/Pins TSSOP/14
Oper. Temp. (°C) -40 to +85
BudgetaryPrice (See Notes) 3.18


MAX5079EUD+ Maxim Integrated Parts by Analog Devices

HOT-SWAP CTRL -40 TO 85DEG C

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Controller Applications Base Station Line Card N+1 Redundant Power Systems Networking Line Cards RAID Servers
Input Voltage -
Supply Voltage Min 2.75V
Supply Voltage Max 13.2V
Controller IC Case Style TSSOP
No. of Pins 14Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Hot-Swap Ctrl, -40 To 85Deg C | Newark Electronics
HOT-SWAP CTRL, -40 TO 85DEG C | element14
IC, MOSFET CNTRL, ORING, 14TSSOP | Farnell

Frequently Asked Questions

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Is the MAX5079EUD+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX5079EUD+ have stock available?

Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX5079EUD+ .

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