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MAX5930EEG+TMAXIMN/a1248avaiLow-Voltage, Triple, Hot-Swap Controllers/Power Sequencers/Voltage Trackers


MAX5930EEG+T ,Low-Voltage, Triple, Hot-Swap Controllers/Power Sequencers/Voltage TrackersFeaturesThe MAX5930/MAX5931 +1V to +13.2V triple hot-swap♦ Safe Hot Swap for +1V to +13.2V Power Su ..
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MAX5930EEG+T
Low-Voltage, Triple, Hot-Swap Controllers/Power Sequencers/Voltage Trackers
General Description
The MAX5930/MAX5931 +1V to +13.2V triple hot-swap
controllers provide complete protection for multisupply
systems. They allow the safe insertion and removal of
circuit cards into live backplanes. These devices hot
swap multiple supplies ranging from +1V to +13.2V,
provided one supply is at or above +2.7V and only one
supply is above 11V. The input voltage rails (channels)
can be configured to sequentially turn-on/off, track
each other, or have completely independent operation.
The discharged filter capacitors of the circuit card pro-
vide low impedance to the live backplane. High inrush
currents from the backplane to the circuit card can burn
up connectors and components, or momentarily collapse
the backplane power supply leading to a system reset.
The MAX5930/MAX5931 hot-swap controllers prevent
such problems by gradually ramping up the output volt-
age and regulating the current to a preset limit when the
board is plugged in, allowing the system to stabilize
safely. After the startup cycle is complete, on-chip com-
parators provide VariableSpeed/BiLevel™ protection
against short-circuit and overcurrent faults, and provide
immunity against system noise and load transients.
The load is disconnected in the event of a fault condi-
tion. The MAX5930/MAX5931 fault-management mode
is selectable, allowing latched fault or autoretry after a
fault condition.
The MAX5930/MAX5931 offer a variety of options to
reduce external component count and design time. All
devices integrate an on-board charge pump to drive
the gates of low-cost, external N-channel MOSFETs, an
adjustable startup timer, and an adjustable current limit.
The devices offer integrated features like startup cur-
rent regulation and current glitch protection to eliminate
external timing resistors and capacitors. The
MAX5931L provides an open-drain, active-low status
output for each channel, the MAX5931H provides an
open-drain, active-high status output for each channel,
and the MAX5930 status output polarity is selectable.
The MAX5930 is available in a 24-pin QSOP package,
and the MAX5931 is available in a 20-pin QSOP pack-
age. All devices are specified over the extended -40°C
to +85°C temperature range.
Applications
Features
Safe Hot Swap for +1V to +13.2V Power Supplies
with Any Input Voltage (VIN_) ≥2.7V and Only One
VIN_> 11.0V
Adjustable Circuit Breaker/Current-Limit
Threshold from 25mV to 100mV
Configurable Tracking, Sequencing, or
Independent Operation Modes
VariableSpeed/BiLevel Circuit-Breaker ResponseInternal Charge Pumps Generate N-Channel
MOSFET Gate Drives
Inrush Current Regulated at StartupAutoretry or Latched Fault ManagementProgrammable Undervoltage LockoutStatus Outputs Indicate Fault/Safe Condition
MAX5930/MAX5931
Low-Voltage, Triple, Hot-Swap Controllers/
Power Sequencers/Voltage Trackers

MODE
ON3
LIM2
IN2LIM1
ON1
ON2
POL
TOP VIEW
SENSE2
GATE2
LIM3
IN3STAT1
GATE1
SENSE1
IN1
SENSE3
GATE3
GND
BIASSTAT3
LATCH
TIM
STAT2
QSOP

MAX5930
Pin Configurations
Ordering Information

19-3032; Rev 2; 3/04
PARTTEMP RANGEPIN-PACKAGE
MAX5930EEG
-40°C to +85°C24 QSOP
MAX5931LEEP
-40°C to +85°C20 QSOP
MAX5931HEEP-40°C to +85°C20 QSOP
VariableSpeed/BiLevel is a trademark of Maxim Integrated
Network Switches, Routers,
Hubs
Hot Plug-In Daughter Cards
RAID
Solid-State Circuit Breakers
Power-Supply
Sequencing/Tracking
Base-Station Line Cards
Portable Computer Device
Bays (Docking Stations)
Selector Guide and Typical Operating Circuit appear at end
of data sheet.

Pin Configurations continued at end of data sheet.
MAX5930/MAX5931
Low-Voltage, Triple, Hot-Swap Controllers/
Power Sequencers/Voltage Trackers
ABSOLUTE MAXIMUM RATINGS

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.
(All voltages referenced to GND, unless otherwise noted.)
IN_..........................................................................-0.3V to +14V
GATE_.............................................................-0.3V to (IN_ + 6V)
BIAS (Note 1) ..............................................(VIN- 0.3V) to +14V
ON_, STAT_, LIM_ (MAX5930), TIM, MODE,
LATCH, POL (MAX5930)..........................-0.3V to (VIN+ 0.3V)
SENSE_........................................................-0.3V to (IN_ + 0.3V)
Current into Any Pin..........................................................±50mA
Continuous Power Dissipation (TA= +70°C)
20-Pin QSOP (derate 9.1mW/°C above +70°C)............727mW
24-Pin QSOP (derate 9.5mW/°C above +70°C)............762mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
ELECTRICAL CHARACTERISTICS

(VIN_= +1V to +13.2V provided at least one supply is larger than or equal to +2.7V and only one supply is > 11.0V, TA= -40°C to +85°C,
unless otherwise noted. Typical values are at VIN1= 12.0V, VIN2= 5.0V, VIN3= 3.3V, VON_= +3.3V, and TA= +25°C.) (Notes 1, 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
POWER SUPPLIES

IN_ Input Voltage RangeVIN_At least one VIN_ ≥ +2.7V and only one
VIN_ > 11.0V1.013.2V
Supply CurrentIQIIN1 + IIN2 + IIN3, VON_ = 2.7V,
VIN_ = +13.2V, after STAT_ high2.55mA
CURRENT CONTROL

TA = +25°C22.52527.5LIM_ = GND
(MAX5930),
MAX5931
(Note 4)TA = -40°C to +85°C21.027.5
RLIM_ = 10kΩ (MAX5930)80125
Slow-Comparator Threshold
(VIN_ - VSENSE_)
(Note 3)
VSC,TH
RLIM_ from LIM_ to GND (MAX5930)RLIM_ x 7.5 x
10-6 + 25mV
1mV overdrive3msSlow-Comparator Response Time
(Note 4)tSCD50mV overdrive130µs
Fast-Comparator Threshold
(VIN_ - VSENSE_)VFC,TH2 x
VSC,THmV
Fast-Comparator Response TimetFCD10mV overdrive, from overload condition200ns
SENSE_ Input Bias CurrentIB SENSE_VSENSE_ = VIN_0.031µA
MOSFET DRIVER

RTIM = 100kΩ8.010.813.6
RTIM = 4kΩ (minimum value)0.300.40.55Startup Period (Note 5)tSTART
TIM floating (default)5914
Note 1:
VINis the largest of VIN1, VIN2, and VIN3.
MAX5930/MAX5931
Low-Voltage, Triple, Hot-Swap Controllers/
Power Sequencers/Voltage Trackers
ELECTRICAL CHARACTERISTICS (continued)

(VIN_= +1V to +13.2V provided at least one supply is larger than or equal to +2.7V and only one supply is > 11.0V, TA= -40°C to +85°C,
unless otherwise noted. Typical values are at VIN1= 12.0V, VIN2= 5.0V, VIN3= 3.3V, VON_= +3.3V, and TA= +25°C.) (Notes 1, 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Charging, VGATE_ = GND, VIN_ = +5V
(Note 6)80100125
Discharging, during startup100
Discharging, normal turn-off or triggered by
the slow comparator after startup; VGATE_ =
5V, VIN_ = 10V, VON_ = 0V7Average Gate CurrentIGATE
Discharging, triggered by a fault after
startup; VGATE_ = 5V, VIN_ = 10V, (VIN_ -
VSENSE_) > VFC,TH_ (Note 7)50120
Gate-Drive VoltageVDRIVEVGATE_ - VIN_, IGATE_ = 1µA4.95.35.6V
ON COMPARATOR

Low to high0.850.8750.90VON_ ThresholdVON_,THHysteresis25mV
ON_ Propagation Delay10mV overdrive10µs
ON_ Voltage RangeVON_Without false output inversionVINV
ON_ Input Bias CurrentIBONVON_ = VIN0.031µA
ON_ Pulse-Width LowtUNLATCHTo unlatch after a latched fault100µs
DIGITAL OUTPUTS (STAT_)

Output Leakage CurrentVSTAT_ ≤ 13.2V1µA
Output Voltage LowVOL_POL = floating (MAX5930), ISINK = 1mA0.4V
UNDERVOLTAGE LOCKOUT (UVLO)

UVLO ThresholdVUVLO
Startup is initiated when this threshold is
reached by any VIN_ and VON_ > 0.9V
(Note 8)
2.252.452.65V
UVLO HysteresisVUVLO,HYST250mV
UVLO Glitch Filter Reset TimetD,GFV I N < V U V L O m axi m um p ul se w i d th to r eset10µs
UVLO to Startup DelaytD,UVLOTime input voltage must exceed VUVLO
before startup is initiated2037.560ms
Input Power-Ready ThresholdVPWRRDY(Note 9)0.90.951.0V
Input Power-Ready HysteresisVPWRHYST50mV
LOGIC AND TIMING

POL Input PullupIPOLPOL = GND (MAX5930)246µA
LATCH Input PullupILATCHLATCH = GND246µA
MODE Input VoltageVMODEMODE floating (default to sequencing
mode)1.01.251.5V
Independent-Mode Selection
ThresholdVINDEP,THVMODE rising0.4V
Tracking-Mode Selection
ThresholdVTRACK,THVMODE rising2.7V
MAX5930/MAX5931
Low-Voltage, Triple, Hot-Swap Controllers/
Power Sequencers/Voltage Trackers
ELECTRICAL CHARACTERISTICS (continued)

(VIN_= +1V to +13.2V provided at least one supply is larger than or equal to +2.7V and only one supply is > 11.0V, TA= -40°C to +85°C,
unless otherwise noted. Typical values are at VIN1= 12.0V, VIN2= 5.0V, VIN3= 3.3V, VON_= +3.3V, and TA= +25°C.) (Notes 1, 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

MODE Input ImpedanceRMODE200kΩ
Autoretry DelaytRETRYDelay time to restart after fault shutdown64 x
tSTARTms
Note 2:
All devices are 100% tested at TA= +25°C. Limits over temperature are guaranteed by design.
Note 3:
The slow-comparator threshold is adjustable. VSC,TH= RLIMx 7.5µA + 25mV (see theTypical Operating Characteristics).
Note 4:
The current-limit slow-comparator response time is weighed against the amount of overcurrent, the higher the overcurrent
condition, the faster the response time (see the Typical Operating Characteristics).
Note 5:
The startup period (tSTART) is the time during which the slow comparator is ignored and the device acts as a current-limiter
by regulating the sense current with the fast comparator (see the Startup Periodsection).
Note 6:
The current available at GATE is a function of VGATE(see the Typical Operating Characteristics).
Note 7:
After a fault triggered by the fast comparator, the gate is discharged by the strong discharge current.
Note 8:
Each channel input while the other inputs are at +1V.
Note 9:
Each channel input while any other input is at +3.3V.
Typical Operating Characteristics

(Typical Operating Circuits, Q1 = Q2 = Q3 = Fairchild FDB7090L, VIN1= +12.0V, VIN2= +5.0V, VIN3= +1V, TA= +25°C, unless oth-
erwise noted. Channels 1 through 3 are identical in performance. Where characteristics are interchangeable, channels 1 through 3
are referred to as X, Y, and Z.)
SUPPLY CURRENT vs. INPUT VOLTAGE

MAX5930 toc01
VINX (V)
IIN
(mA)824101214
VINY = VINZ = 2.7V
IINX + IINY + IINZ
IINX
IINY + IINZ
TOTAL SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX5930 toc02
VIN (V)
IIN
(mA)
IIN = IIN1 + IIN2 + IIN3
VIN = VINX = VINY = VINZ
VON = VON1 = VON2 = VON3
VON = 0V
VON = 3.3V
SUPPLY CURRENT
vs. TEMPERATURE
MAX5930 toc03
TEMPERATURE (°C)
IIN
(mA)-153560
IINY + IINZ
VON_ = VINY = VINZ = 2.7V
VINX = 2.8V
IINY + IINZ
IINX
MAX5930/MAX5931
Low-Voltage, Triple, Hot-Swap Controllers/
Power Sequencers/Voltage Trackers

GATE-DRIVE VOLTAGE
vs. INPUT VOLTAGE

MAX5930 toc04
VINX (V)
DRIVEX
(V)824101214
VINY = VINZ = 2.7V
GATE CHARGE CURRENT
vs. GATE VOLTAGE
MAX5930 toc05
VGATEX (V)
GATE CHARGE CURRENT (
VONW = VINY = VINZ = 2.7V
VINX = 13.2V
VINX = 5V
VINX = 1V
GATE CHARGE CURRENT
vs. TEMPERATURE
MAX5930 toc06
TEMPERATURE (°C)
GATE CHARGE CURRENT (
VONX = VINY = VINZ = 2.7V
VGATEX = 0V
VINX = 13.2V
VINX = 5V
VINX = 1V
STRONG GATE DISCHARGE CURRENT
vs. GATE VOLTAGE
MAX5930 toc07
VGATEX (V)
GATE DISCHARGE CURRENT (mA)41216
VINX = 13.2V
VINX = 1V
VINX = 5V
VINX = 3.3V
VONX = 0V
VINY = VINZ = 2.7V
STRONG GATE DISCHARGE CURRENT
vs. TEMPERATURE
MAX5930 toc08
TEMPERATURE (°C)
GATE DISCHARGE CURRENT (mA)-153560
VINX = 13.2V
VINX = 5V
VINX = 3.3V
VINX = 1V
VONX = 0V
VINY = VINZ = 2.7V
TURN-OFF TIME
vs. SENSE VOLTAGE
MAX5930 toc09
VINX - VSENSEX (mV)
TURN-OFF TIME (ms)
RLIMX = 100Ω
SLOW-COMPARATOR
THRESHOLD
FAST-COMPARATOR
THRESHOLD
TURN-OFF TIME vs. SENSE VOLTAGE
(EXPANDED SCALE)

MAX5930 toc10
VINX - VSENSEX (mV)
TURN-OFF TIME (ms)
RLIMX = 100Ω
SLOW-COMPARATOR THRESHOLD
SLOW-COMPARATOR THRESHOLD
vs. RLIMX
MAX5930 toc11
RLIMX (kΩ)
SC,TH
(mV)264810
STARTUP PERIOD
vs. RTIM

MAX5930 toc12
RTIM (kΩ)
START
(ms)100200400300500
Typical Operating Characteristics (continued)

(Typical Operating Circuits, Q1 = Q2 = Q3 = Fairchild FDB7090L, VIN1= +12.0V, VIN2= +5.0V, VIN3= +1V, TA= +25°C, unless oth-
erwise noted. Channels 1 through 3 are identical in performance. Where characteristics are interchangeable, channels 1 through 3
are referred to as X, Y, and Z.)
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