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Part: MAX5900__EUT-T
Category:
Power Management
-> Power Distribution/Switches
-> Hot-Swap Controllers
Description: -100v Sot23 Simple Swapper Hot-swap Controllers
Company: Maxim Integrated Products
Datasheet: Download MAX5900__EUT-T datasheet File size : 745 kB
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Datasheet text preview:
19-1988; Rev 3; 8/03
-100V SOT23 Simple Swapper Hot-Swap Controllers
General Description
The MAX5900/MAX5901 are SOT23 hot-swap controllers t h a t 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 powerg o o d status output, PGOOD ( M A X 5 9 0 0 ) 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
Features
MAX5900/MAX5901
Ordering Information
PART MAX5900_ _EUT-T* MAX5901_ _EUT-T* TEMP RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 6 SOT23-6 6 SOT23-6
*For specific part numbers, see Selector Guide at end of data sheet.
_________________________Applications
Tele r om Line Cards Network o Requices No External Sense Resistor Switches Network Routers Servers Base-Station Line Cards
TOP VIEW
VEE 1
Pin Configuration
6
ON/OFF
Typical Operating Circuits
DRAIN 2
BACKPLANE CIRCUIT CARD GND HOT-SWAP CONTROLLER V 1+ MAX5900 GND ON/OFF VEE PGOOD DRAIN GATE V 1LUCENT JWO50A1 ON/OFF 50W ISOLATED POWER SUPPLY
MAX5900 MAX5901
5
PGOOD (PGOOD)
GATE 3
4
GND
SOT23-6
( ) ARE FOR MAX5901 ONLY.
-48V FUSE
Typical Operating Circuits continued at end of data sheet.
IRF540NS
Simple Swapper is a trademark of Maxim Integrated Products, Inc. 1
________________________________________________________________ Maxim Integrated Products
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.
100V SOT23 Simple Swapper Hot-Swap Controllers MAX5900/MAX5901
ABSOLUTE MAXIMUM RATINGS
Terminal Voltage (with respect to GND, unless otherwise noted) VEE, DRAIN, PGOOD, PGOOD ....-120V to +0.3V ON/OFF to VEE .........-0.3V to +4V GATE to VEE ......... -0.3V to +12V Current into Any Pin...±3mA Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 9.1mW/°C above +70°C)..727mW Maximum Junction Temperature ....+150°C Storage Temperature Range .....-60°C to +150°C Lead Temperature..(Note 1)
Note 1: This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device can be exposed to during board level solder attach and rework. This limit permits only the use of solder profiles recommended in the industry standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow. Preheating is required. Hand or wave soldering is not allowed.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VEE = -9V to -100V, GND = 0, ON/OFF open circuit, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VEE = -48V and TA = +25°C.) (Notes 2, 3)
PARAMETER Supply Voltage Supply Current External Gate Drive Load Voltage Slew Rate Magnitude Default UVLO UVLO Hysteresis ON/OFF Input Resistance Drain to VEE Resistance ON/OFF Reference Threshold ON/OFF Hysteresis Start Delay (Note 4) ON/OFF Off Delay (Note 5) Circuit Breaker Threshold tON tOFF VCB VGATE - VEE VCB until (VGATE - VEE ) < 1V, 200mV overdrive step MAX590_ _BEUT MAX590_ _CEUT CGATE = 1nF CGATE = 4.7nF CGATE = 10nF 150 Circuit Breaker Delay (Note 6) Restart Delay (Note 4) 150 9 170 265 365 RON/OFF RDVEE VON/OFF (VON/OFF - VEE) increasing 1.14 20 SYMBOL VEE IG N D VGS Measured at GND VEE = -36V to -72V VGATE - VEE VEE = -100V VEE = -9V SR V UVLO | dVDRAIN/dt |, CLOAD = 10µF, VEE = -9V to -36V |VEE| increasing 7.5 8 6 4.5 -34.5 CONDITIONS MIN -100 0.5 9.5 10 7 10 -31.5 3.5 32 466 1.26 140 300 20 200 300 400 1.5 2.5 4 300 500 32 240 345 455 3 4.5 6 500 ms µs mV 1.38 50 17 -28.5 V/ms V V k k V mV ms ms TYP MAX -9 1.3 11.6 11.6 V UNITS V mA
tCB tRS
After circuit breaker event, MAX590_A_EUT only
2
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-100V SOT23 Simple Swapper Hot-Swap Controllers
ELECTRICAL CHARACTERISTICS (continued)
(VEE = -9V to -100V, GND = 0, ON/OFF open circuit, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VEE = -48V and TA = +25°C.) (Notes 2, 3)
PARAMETER PGOOD (PGOOD) Assertion Threshold (Note 7) PGOOD (PGOOD) Output Low Voltage Power-Good Output OpenDrain Leakage Current Thermal Shutdown Temperature Thermal Shutdown Hysteresis SYMBOL VPG CONDITIONS VDRAIN - VEE; MAX590_A, MAX590_L only MAX5900, VPGOOD - VEE, IOL = 1mA; MAX5901, VPGOOD - VEE, IOL = 1mA VPGOOD - VEE = 100V (MAX5900); VPGOOD - VEE = 100V (MAX5901) Junction temperature MIN TYP 0.75 VCB MAX UNITS mV
MAX5900/MAX5901
VOL IOH TSD THY
0.6 0.2 +125 15
1.65 10
V µA °C °C
Note 2: All currents into device pins are positive, all currents out of device pins are negative, and all voltages are referenced to GND, unless otherwise noted. Note 3: All specifications are 100% tested at TA = +25°C. Specifications over -40°C to +85°C are guaranteed by characterization. Note 4: This is the delay time from a valid on condition until VGS begins rising. Valid on conditions are: the device is not in undervoltage lockout; ON/OFF is not driven low; and the device is not in thermal shutdown. Note 5: This is the delay from a valid low on ON/OFF until VGS falls. Pulses on ON/OFF less than tOFF are ignored, offering glitch immunity. Note 6: Guaranteed by design, not production tested. Note 7: For a detailed description, see the Power-Good Output section of the data sheet.
Typical Operating Characteristics
(VEE = -48V, GND = 0, and TA = +25°C, unless otherwise noted. See Figure 6 for test circuits.)
SUPPLY CURRENT vs. INPUT VOLTAGE
MAX5900/01 toc01
SUPPLY CURRENT vs. TEMPERATURE
MAX5900/1 toc02
DEFAULT UNDERVOLTAGE LOCKOUT vs. TEMPERATURE
-25.5 -26.5 -27.5 -28.5 -29.5 -30.5 -31.5 -32.5 -33.5 -34.5 -35.5 -36.5 -37.5 DECREASING |VEE|
MAX9500/01 toc03
1.1 1.0 SUPPLY CURRENT (mA) 0.9
0.90 0.85 0.80 IEE (mA) 0.75 0.70 VEE = -12V 0.65 0.60 0.55 VEE = -75V
100k FROM ON/OFF TO GND
VEE = -48V
VUVLO (V)
0.8 0.7 0.6 0.5 -100 -80 -60 -40 -20 0 INPUT VOLTAGE (V)
INCREASING |VEE|
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
TEMPERATURE (°C)
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