The MAX5900/MAX5901 are SOT23/TDFN hot-swap controllers
that allow a circuit card to be safely hot-plugged
into a live backplane without causing a glitch on
the power-supply rail. These devices operate from -9V to
-100V and provide the simplest hot-swap solution by
eliminating all external components except an external
n-channel MOSFET.
The MAX5900/MAX5901 limit the inrush current to the
load and provide a circuit-breaker function for overcurrent
protection. During startup, the circuit-breaker function is
disabled and the MAX5900/MAX5901 limit the inrush current
by gradually turning on the external MOSFET. Once
the external MOSFET is fully enhanced, the circuit-breaker
function is enabled and the MAX5900/MAX5901 provide
overcurrent protection by monitoring the voltage
drop across the external MOSFET's on-resistance.
The MAX5900/MAX5901 include an undervoltage lockout
(UVLO) function, ON/active-low OFF control input, and a powergood
status output, active-low PGOOD (MAX5900) or PGOOD
(MAX5901). A built-in thermal shutdown feature is also
included to protect the external MOSFET in case of overheating.
The MAX5900/MAX5901 offer latched or autoretry fault
management and are available with 200mV, 300mV, or
400mV circuit-breaker thresholds. Both the MAX5900 and
MAX5901 are available in small SOT23 and TDFN packages,
and are specified for the extended -40°C to +85°C
temperature range. For specific ordering information see
the Selector Guide at the end of the data sheet.
Key Features
Applications/Uses
Wide -9V to -100V Operation
Requires No External Sense Resistor
Drives External N-Channel MOSFET
Limits Inrush Current
Circuit-Breaker Function
Less than 1mA Quiescent Current
ON/Active-Low OFF Input Permits Load Power-Supply Control and Sequencing
Adjustable Undervoltage Lockout
Power-Good Output with 100V Rating
Latching or Automatic Retry Fault Management
Thermal Shutdown Helps Protect the External MOSFET
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
Download
E-Mail
