MAX5904ESA+ by Analog Devices

Low-Voltage, Dual Hot-Swap Controllers/Power Sequencers


The MAX5904-MAX5909 dual hot-swap controllers provide complete protection for dual-supply systems. These devices hot swap two supplies ranging from +1V to +13.2V, provided one supply is at or above 2.7V, allowing the safe insertion and removal of circuit cards into live backplanes. The discharged filter capacitors of the circuit card provide low impedance to the live backplane. High inrush currents from the backplane to the circuit card can burn up connectors and components, or momentarily collapse the backplane power supply leading to a system reset. The MAX5904 family of hot-swap controllers prevents such problems by gradually ramping up the output voltage and regulating the current to a preset limit when the board is plugged in, allowing the system to stabilize safely. After the startup cycle is completed, two on-chip comparators provide VariableSpeed/BiLevel™ protection against short-circuit and overcurrent faults, as well as immunity against system noise and load transients. In the event of a fault condition, the load is disconnected. The MAX5905/MAX5907/MAX5909 must be unlatched after a fault, and the MAX5904/MAX5906/MAX5908 automatically restart after a fault. The MAX5904 family offers a variety of options to reduce component count and design time. All devices integrate an on-board charge pump to drive the gates of low-cost, external N-channel MOSFETs. The devices offer integrated features like startup current regulation and current glitch protection to eliminate external timing resistors and capacitors. The MAX5906-MAX5909 provide an open-drain status output, an adjustable startup timer, an adjustable current limit, an uncommitted comparator, and output undervoltage/overvoltage monitoring. The MAX5904/MAX5905 are available in 8-pin SO packages. The MAX5906-MAX5909 are available in space-saving 16-pin QSOP packages.

Where to Buy

Prices starting from US$6.68

Distributor Stock
Logo for Farnell
Farnell
from US$8.67
No stock
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Logo for Analog Devices
Analog Devices
from US$6.68
1,165
in stock
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Logo for element14
element14
from US$7.47
-
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Features

Safe Hot Swap for +1V to +13.2V Power Supplies Requires One Input > 2.7V
Low 25mV Default Current-Limit Threshold
Inrush Current Regulated at Startup
Circuit Breaker Function
Adjustable Circuit Breaker/Current-Limit Threshold
VariableSpeed/BiLevel Circuit-Breaker Response
Auto-Retry or Latched Fault Management
On/Off Sequence Programming
Status Output Indicates Fault/Safe Condition
Output Undervoltage and Overvoltage Monitoring and/or Protection

Specifications

VIN (V) (min) 1
VIN (V) (max) 13.2
# Channels 2
Circuit Breaker/ Current Limit Current Limit
Circuit Breaker/Current Limit Threshold (mV) 25
Fault Condition Control Periodic Retry
Positive/Negative Rail Positive
Features Undervoltage/Overvoltage ProtectionVariableSpeed/BiLevel Current Limit
Package/Pins SOIC (N)/8
BudgetaryPrice (See Notes) 5.18


MAX5904ESA+ Semiconductors - ICs by Analog Devices

HOT SWAP CONTROLLER 1V-13.2V NSOIC-8

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

Specifications

Controller Applications Base Stations Hot Plug-In Daughter Cards Network Routers & Switches RAID Remote Access Servers
Input Voltage -
Supply Voltage Min 1V
Supply Voltage Max 13.2V
Controller IC Case Style NSOIC
No. of Pins 8Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Low-Voltage, Dual Hot-Swap Con | Analog Devices
HOT SWAP CONTROLLER, 1V-13.2V, NSOIC-8 | Farnell

Frequently Asked Questions

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Is the MAX5904ESA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Analog Devices, element14 and Farnell have stock available or on a lead time for MAX5904ESA+ .

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