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MAX5903AAEUT Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX5903AAEUT Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 14 page +72V, SOT23/TDFN, Simple Swapper Hot-Swap Controllers ________________________________________________________________ Maxim Integrated Products 1 19-1988; Rev 3; 1/07 General Description The MAX5902/MAX5903 are hot-swap controllers that allow a circuit card to be safely hot plugged into a live backplane without causing a glitch on the power-sup- ply rail. These devices operate from +9V to +72V and provide the simplest hot-swap solution by eliminating all external components except the external p-channel MOSFET. The MAX5902/MAX5903 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 MAX5902/MAX5903 limit the inrush cur- rent by gradually turning on the external MOSFET. Once the external MOSFET is fully enhanced, the circuit-break- er function is enabled and the MAX5902/MAX5903 pro- vide overcurrent protection by monitoring the voltage drop across the external MOSFET’s on-resistance. The MAX5902/MAX5903 include an undervoltage lock- out (UVLO) function, ON/OFF control input, and a power-good status output, PGOOD (MAX5902) or PGOOD (MAX5903). A built-in thermal shutdown fea- ture is also included to protect the external MOSFET in case of overheating. The MAX5902/MAX5903 offer latched or autoretry fault management and are available with 300mV, 400mV or 500mV circuit-breaker thresholds. Both the MAX5902 and MAX5903 are available in small SOT23 and TDFN pack- ages, 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. Applications Network Routers Servers Network Switches RAID Base Station Line Industrial Systems Cards Features ♦ Wide +9V to +72V Operation ♦ Requires No External Sense Resistor ♦ Drives External p-Channel MOSFET ♦ Limits Inrush Current ♦ Circuit-Breaker Function ♦ Less than 2mA Quiescent Current ♦ ON/OFF Input Permits Load Power-Supply Control and Sequencing ♦ Adjustable Undervoltage Lockout ♦ Power-Good Output with +72V Rating ♦ Latching or Automatic Retry Fault Management ♦ Thermal Shutdown Helps Protect the External MOSFET ♦ Available in Two Small Packages 6-Pin TDFN and SOT23 Ordering Information PART TEMP RANGE PIN- PACKAGE PKG CODE MAX5902_ _EUT-T+* -40°C to +85°C 6 SOT23-6 U6F+6 MAX5902_ _ETT-T+* -40°C to +85°C 6 TDFN-6 T633+2 MAX5903_ _EUT-T+* -40°C to +85°C 6 SOT23-6 U6F+6 MAX5903_ _ETT-T+* -40°C to +85°C 6 TDFN-6 T633+2 *For specific part numbers see the Selector Guide at end of data sheet. +Denotes lead-free package. GND 16 ON/OFF 5 PGOOD (PGOOD) VS MAX5902 MAX5903 SOT23-6 TOP VIEW ( ) ARE FOR MAX5903 ONLY. 2 34 DRAIN GATE Pin Configurations Typical Operating Circuits GND ON/OFF HOT-SWAP CONTROLLER VS GND 50W ISOLATED POWER SUPPLY VIN (-) ON/OFF LUCENT JW050A1 VIN (+) GATE DRAIN PGOOD +48V BACKPLANE CIRCUIT CARD IRFR5410 MAX5902 Simple Swapper is a trademark of Maxim Integrated Products, Inc. Pin Configurations continued at end of data sheet. Typical Operating Circuits continued at end of data sheet. For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. |
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