MAX5900_07 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – 100V, SOT23/TDFN, Simple Swapper Hot-Swap Controllers

19-2077; Rev 5; 1/07
-100V, SOT23/TDFN, Simple Swapper
Hot-Swap Controllers
General Description
The MAX5900/MAX5901 are SOT23/TDFN hot-swap con-
trollers 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 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 MAX5900/MAX5901 pro-
vide overcurrent protection by monitoring the voltage
drop across the external MOSFET’s on-resistance.
The MAX5900/MAX5901 include an undervoltage lock-
out (UVLO) function, ON/OFF control input, and a power-
good status output, PGOOD (MAX5900) or PGOOD
(MAX5901). A built-in thermal shutdown feature is also
included to protect the external MOSFET in case of over-
heating.
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 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
♦ Re^Tq^eu^lei^cre^os^mN^LoⁱⁿE^ex^Cte^arn^da^sl Sense R^Ne^es^ti^ws^oto^rkr ^Switches
Network Routers
Servers
Base-Station Line
Cards
Typical Operating Circuits
Features
♦ 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/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
♦ Space-Saving 6-Pin SOT23 and TDFN Packages
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX5900_ _EUT+T* -40°C to +85°C 6 SOT23-6 U6F-6
MAX5900_ _ETT+T* -40°C to +85°C 6 TDFN-EP** T633-2
MAX5901_ _EUT+T* -40°C to +85°C 6 SOT23-6 U6F-6
MAX5901_ _ETT+T* -40°C to +85°C 6 TDFN-EP** T633-2
*For specific part numbers, see Selector Guide at end of data
sheet.
+Denotes lead-free package.
**EP = Exposed pad.
Pin Configurations
TOP VIEW
V_EE 1
6 ON/OFF
BACKPLANE CIRCUIT CARD
GND
HOT-SWAP CONTROLLER
MAX5900
GND PGOOD
ON/OFF DRAIN
VEE
GATE
-48V
FUSE
IRF540NS
50W ISOLATED
POWER SUPPLY
V1+
LUCENT
JWO50A1
ON/OFF
V1-
MAX5900
DRAIN 2 _MAX5901 5 PGOOD (PGOOD)
GATE 3
4 GND
SOT23
( ) ARE FOR MAX5901 ONLY.
Pin Configurations continued at end of data sheet.
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.