MAX5915EUI-MAX5916EUI Fast Delivery |IC PHOENIX CO.,LIMITED

MAX5916EUI ,Dual PCI 2.2 Hot-Swap ControllersELECTRICAL CHARACTERISTICS(V = -12V, V = +12V, V = +3.3V, V = V = +5V, T = -40°C to +85°C, unless o ..
MAX5916EUI+ ,Dual PCI 2.2 Hot-Swap ControllersApplicationsMAX5915EUI* -40°C to +85°C 28 TSSOPPCI 2.2 ServerMAX5915UUI 0°C to +85°C 28 TSSOPPCI Se ..
MAX5917AESE+ ,+65V Simple Swapper Hot-Swap SwitchesFeaturesThe MAX5910/MAX5917 are fully integrated hot-swap♦ Provides Safe Hot Swap for +10V to +65V ..
MAX5917BESE+ ,+65V Simple Swapper Hot-Swap SwitchesELECTRICAL CHARACTERISTICS(V = +42V, GND = 0, UVLO = open circuit, V = +3.3V, and T = -40°C to +85° ..
MAX5918LEEE ,Low-Voltage, Dual Hot-Swap Controllers with Independent ON/OFF ControlFeaturesThe MAX5918 and MAX5919 are +1V to +13.2V dual Safe Hot Swap for +1V to +13.2V Power Suppl ..
MAX5918LEEE+ ,Low-Voltage, Dual Hot-Swap Controllers with Independent ON/OFF ControlMAX5918/MAX591919-2496; Rev 0; 7/02Low-Voltage, Dual Hot-Swap Controllers with Independent ON/OFF C ..
MAZ8082-H ,Silicon planar typeFeatures•Extremely low noise voltage caused from the diode (2.4V to 39V,1/3 to 1/10 of our conventi ..
MAZ8082-L ,Silicon planar typeZener DiodesMAZ8000 SeriesSilicon planar typeUnit : mmFor stabilization of power supplyKA
MAZ8082-M ,Silicon planar typeElectrical characteristics within part numbers T = 25°CaTemperaturecoefficient ofZener voltage Rev ..
MAZ8091G ,Silicon planar typeelectrical characteristics WZ Zwithin part numbersReverse current I V Speciﬁed valuemAR R2*Tempera ..
MAZ8091-H ,Silicon planar typeElectrical Characteristics T = 25°CaParameter Symbol Conditions Min Typ Max UnitForward voltage V ..
MAZ8091-L ,Silicon planar typeelectrical characteristicsZ Zwithin part numbersReverse current I V ··············· Specified value ..

MAX5915EUI-MAX5916EUI
Dual PCI 2.2 Hot-Swap Controllers
General Description
The MAX5915/MAX5916 dual PCI 2.2 hot-swap con-
trollers allow for safe insertion and removal of two PCI
cards into live PCI slots or backplanes by limiting the
inrush current at startup. After startup, the
MAX5915/MAX5916 provide protection against short-
circuit, overcurrent, and undervoltage conditions.
The MAX5915/MAX5916 provide independent power
controls for +3.3V, +5V, ±12V, and +3.3V auxiliary sup-
plies of two PCI cards. The MAX5915/MAX5916 provide
intelligent selective thermal shutdown control that shuts
down the channel with an overcurrent fault. Both the
MAX5915 and MAX5916 include internal power
MOSFETs for the +12V, -12V, and +3.3V auxiliary out-
puts. The MAX5915/MAX5916 use internal charge
pumps to activate the gates of the internal FETs control-
ling the +3.3V auxiliary supply. Internal FETs and current-
sense circuitry regulate the ±12V and the +3.3V auxiliary
supplies. Channels A and B operate independently,
allowing a single MAX5915/MAX5916 to monitor two PCI
card slots.
The MAX5915 offers latched fault protection and the
MAX5916 offers autorestart fault protection. The
devices are available in the low-profile 28-pin TSSOP
package and are specified over the -40°C to +85°C
extended temperature range.
Applications
PCI 2.2 Server
PCI Server
RAID
FeaturesPCI 2.2 CompliantIndependent Power Controls for +3.3V, +5V, ±12V,
and +3.3V Auxiliary Supplies of Two PCI CardsInternal MOSFET Switches for ±12V and +3.3V
Auxiliary OutputsSeparate ON/OFF Control Input for Each ChannelIndependent +3.3V Auxiliary Output ON/OFF
ControlOvercurrent Foldback with Timeout and Shutdown
Protection for ±12V and +3.3V Auxiliary Rails with
Status ReportBrick Wall with Timeout and Shutdown Protection
for +5V and +3.3V Rails with Status ReportOutput Undervoltage Monitoring for +3.3V, +5V,
+12V, and +3.3V Auxiliary Rails with Status Report+3.3V Auxiliary AutorestartIntelligent Selective Thermal Shutdown Control
Shuts Down Only the Channel with an Overcurrent
Fault28-Pin TSSOP Package
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers
19-2420; Rev 0; 4/02
Ordering Information
Pin Configuration, Functional Diagram, and Typical Operating
Circuit appear at end of data sheet.
Typical Application Circuit
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers
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.
+12VIN to GND...................................................-0.3V to +14.0V
-12VIN to GND........................................................-14V to +0.3V
-12VO_ to GND......................................+0.3V to (V-12VIN- 0.3V)
+12VO_, 3.3VGATE_, 5VGATE_
to GND..................................................-0.3V to (V+12VIN+ 0.3V)
Any Other Pin to GND...........................................-0.3V to +6.0V
Continuous Power Dissipation (TA= +70°C)
28-Pin TSSOP (derate 23.8mW/°C above +70°C)...........1.9W
Maximum Junction Temperature.....................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
ELECTRICAL CHARACTERISTICS
(V-12VIN= -12V, V+12VIN= +12V, V3.3VAUXIN= +3.3V, VON_= VAUXON_= +5V, TA= -40°C to +85°C, unless otherwise specified.
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V-12VIN= -12V, V+12VIN= +12V, V3.3VAUXIN= +3.3V, VON_= VAUXON_= +5V, TA= -40°C to +85°C, unless otherwise specified.
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V-12VIN= -12V, V+12VIN= +12V, V3.3VAUXIN= +3.3V, VON_= VAUXON_= +5V, TA= -40°C to +85°C, unless otherwise specified.
Note 1:tDEG, UVLOis negative edge triggered. There is no time delay when the inputs rise above the UVLO threshold.
Note 2:The current threshold when the output current starts to fold back. See the Typical Operating Characteristics.
Note 3:tDEGis negative edge triggered. ON_ or AUXON_ transition from low to high has no delay.
Note 4:Temperature threshold at which the outputs of the channel with overcurrent shut down.
Note 5:The temperature threshold at which both channels shut down.
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers
Typical Operating Characteristics
(V+12VIN= +12V, V3.3VAUXIN= +3.3V, V-12VIN= -12V, V5V= +5V, V3.3V= +3.3V, R5VSEN_= 0.005Ω, R3.3VSEN_ = 0.005Ω, C3.3VO_ =
C5VO_ = 470µF, C+12VO_ = C-12VO_ = C3.3VAUXO_ = 47µF, TA= +25°C, unless otherwise noted. See Typical Application Circuit.)
Dual PCI 2.2 Hot-Swap Controllers
Typical Operating Characteristics (continued)
(V+12VIN= +12V, V3.3VAUXIN= +3.3V, V-12VIN= -12V, V5V= +5V, V3.3V= +3.3V, R5VSEN_= 0.005Ω, R3.3VSEN_ = 0.005Ω, C3.3VO_ =
C5VO_ = 470µF, C+12VO_ = C-12VO_ = C3.3VAUXO_ = 47µF, TA= +25°C, unless otherwise noted. See Typical Application Circuit.)
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers
Typical Operating Characteristics (continued)
(V+12VIN= +12V, V3.3VAUXIN= +3.3V, V-12VIN= -12V, V5V= +5V, V3.3V= +3.3V, R5VSEN_= 0.005Ω, R3.3VSEN_ = 0.005Ω, C3.3VO_ =
C5VO_ = 470µF, C+12VO_ = C-12VO_ = C3.3VAUXO_ = 47µF, TA= +25°C, unless otherwise noted. See Typical Application Circuit.)
Dual PCI 2.2 Hot-Swap Controllers
Typical Operating Characteristics (continued)
(V+12VIN= +12V, V3.3VAUXIN= +3.3V, V-12VIN= -12V, V5V= +5V, V3.3V= +3.3V, R5VSEN_= 0.005Ω, R3.3VSEN_ = 0.005Ω, C3.3VO_ =
C5VO_ = 470µF, C+12VO_ = C-12VO_ = C3.3VAUXO_ = 47µF, TA= +25°C, unless otherwise noted. See Typical Application Circuit.)
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers
Typical Operating Characteristics (continued)
(V+12VIN= +12V, V3.3VAUXIN= +3.3V, V-12VIN= -12V, V5V= +5V, V3.3V= +3.3V, R5VSEN_= 0.005Ω, R3.3VSEN_ = 0.005Ω, C3.3VO_ =
C5VO_ = 470µF, C+12VO_ = C-12VO_ = C3.3VAUXO_ = 47µF, TA= +25°C, unless otherwise noted. See Typical Application Circuit.)
-12VO_ IMMEDIATE
SHORT-CIRCUIT RESPONSE
MAX5915 toc44
200ns/div
I-12VO_
2A/div
PGOOD_
5V/div
-12VO_
5V/div
+12VO_ CURRENT FOLDBACK
MAX5915 toc43
2ms/div
I+12VO_
5A/div
PGOOD_
5V/div
+12VO_
5V/div
400ms/div
MAIN SUPPLY
AUTORESTART FAULT MANAGEMENT
+12VO_
5V/div
5VO_
2V/div
MAX5915 toc40
3.3VAUXO_
5V/div
PGOOD_
5V/div
2ms/div
MAIN SUPPLY
LATCHED FAULT MANAGEMENT
+12VO_
5V/div
5VO_
2V/div
MAX5915 toc39
3.3VAUXO_
5V/div
PGOOD_
5V/div
2µs/div
tDEG DELAY TIME
ON_
5V/div
3.3VAUXO_
2V/div
MAX5915 toc38
PGOOD_
5V/div
20ms/div
AUXILIARY SUPPLY
TURN-OFF WAVEFORMS
ON_
5V/div
3.3VAUXO_
2V/div
MAX5915 toc37
PGOOD_
5V/div
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers
Typical Operating Characteristics (continued)
(V+12VIN= +12V, V3.3VAUXIN= +3.3V, V-12VIN= -12V, V5V= +5V, V3.3V= +3.3V, R5VSEN_= 0.005Ω, R3.3VSEN_ = 0.005Ω, C3.3VO_ =
C5VO_ = 470µF, C+12VO_ = C-12VO_ = C3.3VAUXO_ = 47µF, TA= +25°C, unless otherwise noted. See Typical Application Circuit.)
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers
MAX5915/MAX5916
Detailed Description
The MAX5915/MAX5916 are circuit-breaker ICs for hot-
swap applications where a PCI card is inserted into a
slot that is connected to a live backplane. Normally,
when a card is plugged into a live backplane, the
card’s discharged capacitors provide a low-impedance
path that can momentarily cause the main power sup-
ply to collapse. Both devices provide startup current
limiting and undervoltage/overcurrent monitoring of two
separate PCI card slots. Current limiting and short-cir-
cuit protection are achieved using external N-channel
MOSFETs on the +3.3V and +5V supply lines and inter-
nal MOSFETs on the ±12V and +3.3V auxiliary supply
lines.
External sense resistors monitor the output currents of
the +3.3V and +5V supplies. These external sense
resistors adjust the overcurrent trip threshold. PCI stan-
dards dictate maximum values for the supply power
and total power drawn from the backplane. The maxi-
mum power that any one PCI board can draw is 25W.
Table 1 lists PCI standard maximum voltage, current,
and power for each supply.
Table 1 illustrates that both the +5V and +3.3V supplies
can draw up to 25W. Total combination of output power
should be limited to 25W based on PCI standard.
Startup Mode
The +12V input powers the internal circuitry of the
MAX5915/MAX5916. The main supply outputs (3.3VO_,
5VO_, +12VO_, and -12VO_) can become active only
after both of the following events have occurred:V+12VINis above its undervoltage lockout (UVLO)
threshold.ON_ is driven high.
Figure 1 displays typical startup waveforms. The main
supplies can be enabled without using the auxiliary
supply; however, PGOOD_ remains in a low state if the
auxiliary supply is not used.
The auxiliary supply (3.3VAUXO_) is available after both
of these events have occurred:V3.3VAUXINis above its UVLO threshold.AUXON_ is driven high.
Normal Operation +3.3V, +5V,
±12V Outputs
The internal circuitry for the MAX5915/MAX5916 moni-
tors the output voltage on all channels except the -12V
supply. All outputs are monitored for overcurrent. An
undervoltage condition occurs when any supply’s out-
put voltage falls below the set undervoltage level. An
overcurrent fault occurs when a monitored output cur-
rent reaches the set overcurrent threshold. Each supply
has its own overcurrent and undervoltage thresholds. If
any of the monitored voltages fall below their respective
undervoltage level, or if any of the monitored output
currents reach their overcurrent threshold, for a time
period, tDELAY, the controller disables the channel with
the fault condition (see the Fault Managementsection).
External sense resistors monitor current through the
external MOSFETs of the +3.3V and +5V outputs, while
the current for the ±12V supplies are internally moni-
tored. A fault condition on one of the main outputs
causes all the channel’s main outputs to shut down
after tDELAYand then either latch off (MAX5915) or
automatically restart after tRESTART(MAX5916). A fault
on any of the channel’s main outputs does notaffect
the channel’s auxiliary outputs.
Normal Operation +3.3V Auxiliary Output
Auxiliary output voltage and current are monitored inter-
nally. The +3.3V auxiliary output is independentof the
main outputs but the main outputs are dependenton
the auxiliary outputs. Fault conditions on the main out-
puts do not affect the auxiliary. A fault on the auxiliary
supply causes the controller to dis-
Dual PCI 2.2 Hot-Swap Controllers
able all of the affected channel outputs, auxiliary and
main. A fault condition occurs when the output voltage
falls below the set undervoltage threshold or the output
current reaches the overcurrent threshold. When a fault
occurs, all supplies of the affected channel are dis-
abled after a time period tDELAY. All outputs are auto-
matically restarted after a time equal to tRESTART. This
reset is built into both the MAX5915/MAX5916.
Current Limits
All supplies are protected against output overcurrent or
short-circuit conditions. The MAX5915 and MAX5916
employ a “brickwall” current limit on the +3.3V and +5V
supplies and a current-foldback scheme on the ±12V
and +3.3V auxiliary supplies.
Brickwall
A brickwall current limit protects the +3.3V and +5V
main supplies by limiting the load current. The external
sense resistors and the current-limit threshold set the
brickwall current limits. A fault occurs when the load
current reaches the brickwall limit. The main outputs
shut down after tDELAYif the fault remains. The brick-
wall feature limits inrush current caused by positive
supply voltage steps.
Foldback
The ±12V and +3.3V auxiliary supplies employ an inter-
nal current-foldback scheme. The MAX5915/MAX5916
gradually limit the load current once the current-fold-
back threshold is reached. If the overcurrent condition
lasts longer than a fast transient, the output current is
reduced to the foldback current limit and remains at
that level for tDELAYunless the overcurrent condition is
cleared. See the Typical Operating Characteristics.
MAX5915/MAX5916
Dual PCI 2.2 Hot-Swap Controllers

Partno	Mfg	Dc	Qty	Available	Descript
MAX5915EUI	MAX	N/a	86	avai	Dual PCI 2.2 Hot-Swap Controllers
MAX5916EUI	MAXIM	N/a	2472	avai	Dual PCI 2.2 Hot-Swap Controllers
MAX5915EUI	MAXIM	N/a	13	avai	Dual PCI 2.2 Hot-Swap Controllers