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MAX5900

Part Number	MAX5900
Manufacturer	Maxim
Description	-100V SOT23 Simple Swapper Hot-Swap Controllers
Published	Apr 29, 2005
Detailed Description	19-1988; Rev 3; 8/03 -100V SOT23 Simple Swapper Hot-Swap Controllers General Description The MAX5900/MAX5901 are SOT23 ...
Datasheet	MAX5900 PDF File

Overview

19-1988; Rev 3; 8/03 -100V SOT23 Simple Swapper Hot-Swap Controllers General Description The MAX5900/MAX5901 are SOT23 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/OFF control input, and a powergood status output, 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 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.
o Wide -9V to -100V Operation o Requires No External Sense Resistor o Drives External N-Channel MOSFET o Limits Inrush Current o Circuit Breaker Function o Less than 1mA Quiescent Current o ON/OFF Input Permits Load Power-Supply Control and Sequencing o Adjustable Undervoltage Lockout o Power-Good Output with 100V Rating o Latching or Automatic Retry Fault Management o Thermal Shutdown Helps Protect the External MOSFET o Space-Saving 6-Pin SOT23 Package ...

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