MAX5903LCEUT+T Maxim Integrated Products, MAX5903LCEUT+T Datasheet

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MAX5903LCEUT+T

Manufacturer Part Number
MAX5903LCEUT+T
Description
IC HOT-SWAP CONTROLLER SOT23-6
Manufacturer
Maxim Integrated Products
Series
Simple Swapper™r
Type
Hot-Swap Controllerr
Datasheet
1.MAX5902AAETTT.pdf (14 pages)

Specifications of MAX5903LCEUT+T

Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
9 V ~ 72 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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.
19-1988; Rev 3; 1/07
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.
Pin Configurations continued at end of data sheet.
+72V, SOT23/TDFN, Simple Swapper Hot-Swap
( ) ARE FOR MAX5903 ONLY.
TOP VIEW
Network Routers
Network Switches
Base Station Line
Cards
DRAIN
GATE
V
________________________________________________________________ Maxim Integrated Products
S
1
2
3
General Description
SOT23-6
MAX5902
MAX5903
Pin Configurations
Servers
RAID
Industrial Systems
6
5
4
Applications
ON/OFF
PGOOD (PGOOD)
GND
♦ 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
♦ Adjustable Undervoltage Lockout
♦ Power-Good Output with +72V Rating
♦ Latching or Automatic Retry Fault Management
♦ Thermal Shutdown Helps Protect the External
♦ Available in Two Small Packages
*For specific part numbers see the Selector Guide at end of
data sheet.
+Denotes lead-free package.
Simple Swapper is a trademark of Maxim Integrated Products, Inc.
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
BACKPLANE CIRCUIT CARD
+48V
Typical Operating Circuits continued at end of data sheet.
GND
Control and Sequencing
MOSFET
6-Pin TDFN and SOT23
PART
HOT-SWAP CONTROLLER
Typical Operating Circuits
V
ON/OFF
GND
S
MAX5902
PGOOD
DRAIN
TEMP RANGE
GATE
Ordering Information
IRFR5410
Controllers
PIN-
PACKAGE
6 SOT23-6
6 TDFN-6
6 SOT23-6
6 TDFN-6
Features
V
ON/OFF
V
IN
POWER SUPPLY
IN
50W ISOLATED
(+)
(-)
JW050A1
LUCENT
T633+2
T633+2
U6F+6
U6F+6
CODE
PKG
1

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MAX5903LCEUT+T Summary of contents

Page 1

... Selector Guide at end of data sheet. +Denotes lead-free package. BACKPLANE CIRCUIT CARD +48V ON/OFF PGOOD (PGOOD) GND GND Typical Operating Circuits continued at end of data sheet. Simple Swapper is a trademark of Maxim Integrated Products, Inc. Controllers Features Ordering Information PIN- TEMP RANGE PACKAGE 6 SOT23-6 6 TDFN-6 6 SOT23-6 ...

Page 2

SOT23/TDFN, Simple Swapper Hot-Swap Controllers ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND unless otherwise noted) , DRAIN, PGOOD, PGOOD ................................-0.3V to +76V V S ON/OFF ....................................................................-0.3V to +4V GATE to V ............................................................-12V to +0.3V S Current into ...

Page 3

SOT23/TDFN, Simple Swapper Hot-Swap ELECTRICAL CHARACTERISTICS (continued +9V to +72V, GND = 0V, ON/OFF open circuit and T = +25°C.) (Notes PARAMETER SYM Power-Good Output Open-Drain Leakage Current Thermal ...

Page 4

SOT23/TDFN, Simple Swapper Hot-Swap Controllers (V = +48V, GND = 0V, and T = +25°C, unless otherwise noted. See Figure 2 for test circuits GATE DRIVE VOLTAGE vs. INPUT VOLTAGE ...

Page 5

SOT23/TDFN, Simple Swapper Hot-Swap PIN NAME MAX5902 MAX5903 DRAIN 3 3 GATE 4 4 GND PGOOD 5 — — 5 PGOOD 6 6 ON/OFF — — EP Detailed Description The MAX5902/MAX5903 are integrated ...

Page 6

SOT23/TDFN, Simple Swapper Hot-Swap Controllers MAX5902L/MAX5903L turn off the MOSFET, discon- necting the load immediately circuit-breaker fault exists, the MAX5902/MAX5903 assert the power-good output. Then, if any of four conditions exist, the power- good output deasserts and ...

Page 7

SOT23/TDFN, Simple Swapper Hot-Swap +24V OPTIONAL R2 ON/OFF 40.2kΩ R1 DGND 3.01kΩ GND Figure 3. Programmed +18V Lockout, with Optional Optocoupler On/Off Control. A thermal shutdown feature protects the external MOS- FET by turning it off if the die ...

Page 8

SOT23/TDFN, Simple Swapper Hot-Swap Controllers HOT-SWAP CONTROLLER MAX5902 MAX5903 47kΩ 5V LOGIC ON/OFF GND GND LOGIC CONTROL OF 3.3V OR LESS MAY BE CONNECTED DIRECTLY TO THE MAX5902/MAX5903. FOR 5V LOGIC CONTROL INSERT A SERIES 47kΩ RESISTOR AS SHOWN. ...

Page 9

SOT23/TDFN, Simple Swapper Hot-Swap Selecting a Circuit-Breaker Threshold The MAX5902A/MAX5903A and the MAX5902L/ MAX5903L offer a circuit-breaker function to protect the external MOSFET and the load from the potentially damaging effects of excessive current. As load current flows through ...

Page 10

SOT23/TDFN, Simple Swapper Hot-Swap Controllers Suggested External MOSFETs Layout Guidelines Good thermal contact between the MAX5902/ MAX5903 and the external MOSFET is essential for the thermal shutdown feature to operate effectively. Place the MAX5902/MAX5903 as close as possible to ...

Page 11

SOT23/TDFN, Simple Swapper Hot-Swap CIRCUIT-BREAKER PART FUNCTION MAX5902NNEUT+ None MAX5902AAEUT+ Autoretry MAX5902ABEUT+ Autoretry MAX5902ACEUT+ Autoretry MAX5902LAEUT+ Latched MAX5902LBEUT+ Latched MAX5902LCEUT+ Latched MAX5903NNEUT+ None MAX5903AAEUT+ Autoretry MAX5903ABEUT+ Autoretry MAX5903ACEUT+ Autoretry MAX5903LAEUT+ Latched MAX5903LBEUT+ Latched MAX5903LCEUT+ Latched CIRCUIT-BREAKER PART FUNCTION MAX5902NNETT+ ...

Page 12

SOT23/TDFN, Simple Swapper Hot-Swap Controllers BACKPLANE CIRCUIT CARD +48V GND Pin Configurations (continued) TOP VIEW DRAIN 2 MAX5902 MAX5903 3 GATE * EXPOSED PAD TDFN 3mm x 3mm ( ) ARE FOR MAX5903 ONLY. * EXPOSED ...

Page 13

SOT23/TDFN, Simple Swapper Hot-Swap (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Controllers Package Information 13 ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products Package Information (continued) PACKAGE OUTLINE, 6,8,10 & ...

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