MAX5902AAETT-T Datasheet, PDF (1/14 Pages) Maxim Integrated Products – +72V, SOT23/TDFN, Simple Swapper Hot-Swap Controllers

19-1988; Rev 3; 1/07
+72V, SOT23/TDFN, Simple Swapper Hot-Swap
Controllers
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.
Network Routers
Network Switches
Base Station Line
Cards
Applications
Servers
RAID
Industrial Systems
Pin Configurations
TOP VIEW
V_S 1
6 ON/OFF
MAX5902
DRAIN 2 _MAX5903 5 PGOOD (PGOOD)
GATE 3
4 GND
SOT23-6
( ) ARE FOR MAX5903 ONLY.
Pin Configurations continued at end of data sheet.
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
PIN-
PKG
TEMP RANGE _{PACKAGE CODE}
MAX5902_ _EUT-T+* -40°C to +85°C
MAX5902_ _ETT-T+* -40°C to +85°C
MAX5903_ _EUT-T+* -40°C to +85°C
MAX5903_ _ETT-T+* -40°C to +85°C
6 SOT23-6
6 TDFN-6
6 SOT23-6
6 TDFN-6
U6F+6
T633+2
U6F+6
T633+2
*For specific part numbers see the Selector Guide at end of
data sheet.
+Denotes lead-free package.
Typical Operating Circuits
BACKPLANE CIRCUIT CARD
IRFR5410
+48V
HOT-SWAP CONTROLLER
MAX5902
VS
GATE
ON/OFF DRAIN
GND PGOOD
GND
50W ISOLATED
POWER SUPPLY
VIN (+)
LUCENT
JW050A1
ON/OFF
VIN (-)
Typical Operating Circuits continued at end of data sheet.
Simple Swapper is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products 1
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.