MAX5921AESA+ by Analog Devices

-48V Hot-Swap Controllers with External RSENSE and High Gate Pulldown Current

Status: Active
Series: MAX5921
RoHS: Unknown
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The MAX5921/MAX5939 hot-swap controllers allow a circuit card to be safely hot plugged into a live backplane. The MAX5921/MAX5939 operate from -20V to -80V and are well suited for -48V power systems. These devices are pin compatible with both the LT1640 and LT4250 and provide improved features over these devices. The MAX5921/MAX5939 provide a controlled turn-on to circuit cards preventing damage to board connectors, board components, and preventing glitches on the power-supply rail. The MAX5921/MAX5939 provide undervoltage, overvoltage, and overcurrent protection. These devices ensure that the input voltage is stable and within tolerance before applying power to the load. Both the MAX5921 and MAX5939 protect a system against overcurrent and short-circuit conditions by turning off the external MOSFET in the event of a fault condition. The MAX5921/MAX5939 protect against input voltage steps by limiting the load current to a safe level without turning off power to the load. The device features an open-drain power-good status output, active-low PWRGD or PWRGD for enabling downstream converters (see Selector Guide). A built-in thermal shutdown feature is also included to protect the external MOSFET in case of overheating. The MAX5939 features a latched fault output. The MAX5921 contains built-in autoretry circuitry after a fault condition. The MAX5921/MAX5939 are available in an 8-pin SO package and operate in the extended -40°C to +85°C temperature range.

Prices starting from US$4.44


Distributor Starting From Stock
Logo for element14 element14 US$4.44
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Logo for Newark Electronics Newark Electronics -
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Features

Allows Safe Board Insertion and Removal from a Live -48V Backplane
Pin-Compatible with LT1640 and LT4250
Circuit Breaker Immunity to Input Voltage Steps and Current Spikes
450mA GATE Pulldown Current During Short-Circuit Condition
Exponential GATE Pulldown Current
Withstands -100V Input Transients with No External Components
Programmable Inrush and Short-Circuit Current Limits
Operates from -20V to -80V
Programmable Overvoltage Protection
Programmable Undervoltage Lockout with Built-In Glitch Filter
Overcurrent Fault Integrator
Powers Up into a Shorted Load
Power-Good Control Output
Thermal Shutdown Protects External MOSFET

Specifications

VIN (V) (min) -20
VIN (V) (max) -80
# Channels 1
Circuit Breaker/ Current Limit Current Limit
Circuit Breaker/Current Limit Threshold (mV) 50
Fault Condition Control Periodic Retry
Positive/Negative Rail Negative
Features Undervoltage/Overvoltage Protection
Package/Pins SOIC (N)/8
BudgetaryPrice (See Notes) 2.82


MAX5921AESA+ Semiconductors - ICs by Analog Devices

HOT SWAP CONTROLLER 20V-80V NSOIC-8

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

Specifications

Controller Applications Network Routers and Servers Network Switches Telecom Line Cards
Input Voltage -
Supply Voltage Min 20V
Supply Voltage Max 80V
Controller IC Case Style NSOIC
No. of Pins 8Pins
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 CONTROLLER, 20V-80V, NSOIC-8 | Farnell
Hot Swap Controller, 20V-80V, Nsoic-8 | Newark Electronics

Frequently Asked Questions

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Is the MAX5921AESA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for MAX5921AESA+ .

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