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LTC1646IGN#TRPBF

Description
Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N T/R
File Size383KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC1646IGN#TRPBF Overview

Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N T/R

LTC1646IGN#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypePositive Low Voltage
Fault ManagementLatched Off
External FETN-Channel
Number of Channels2
PGOOD Output LogicActive Low
Minimum Operating Supply Voltage (V)2.7
Maximum Operating Supply Voltage (V)7
Typical Circuit Breaker Threshold Voltage (mV)56
Maximum Supply Current (mA)4
External Sense ResistorYes
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
PackagingTape and Reel
Pin Count16
Standard Package NameSOP
Supplier PackageSSOP N
MountingSurface Mount
Package Height1.5(Max)
Package Length4.98(Max)
Package Width3.99(Max)
PCB changed16
Lead ShapeGull-wing
LTC1646
CompactPCI Dual
Hot Swap Controller
DESCRIPTIO
The LTC
®
1646 is a Hot Swap
TM
controller that allows a
board to be safely inserted and removed from a live
CompactPCI bus slot. Two external N-Channel transistors
control the 3.3V and 5V supplies. The supplies can be
ramped-up in current limit or a programmable rate. Elec-
tronic circuit breakers protect both supplies against
overcurrent fault conditions. The PWRGD output indicates
when all of the supply voltages are within tolerance. The
OFF/ON pin is used to cycle the board power or reset the
circuit breaker. The PRECHARGE output can be used to
bias the bus I/O pins during card insertion and extraction.
PCI_RST# is logically combined on-chip with HEALTHY#
in order to generate LOCAL_PCI_RST# which can be used
to reset the CPCI card logic if either of the supply voltages
is not within tolerance.
The LTC1646 is available in the 16-pin narrow SSOP
package.
FEATURES
Allows Safe Board Insertion and Removal from a
Live, CompactPCI
TM
Bus
Controls 3.3V and/or 5V Supplies
Programmable Foldback Current Limit During
Power-Up
Dual Level Circuit Breakers Protect Supplies from
Overcurrent and Short-Circuit Faults
LOCAL_PCI_RST# Logic On-Chip
PRECHARGE Output Biases I/O Pins During Card
Insertion and Extraction
User Programmable Supply Voltage Power-Up Rate
15V High Side Drive for External N-Channel
MOSFETS
PWRGD, RESETOUT and FAULT Outputs
APPLICATIO S
CompactPCI Bus Removable Boards
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
COMPACT PCI
BACKPLANE
CONNECTOR
(MALE)
5V
COMPACT PCI
CIRCUIT CARD
CONNECTOR
(FEMALE)
2.7Ω
Z1
Z2
R2
0.007Ω
1%
R1
0.005Ω, 1%
Q2
IRF7413
Q1
IRF7413
LONG 5V
3.3V
1.8Ω
LONG 3.3V
V(I/O)
0.1µF
0.1µF
R3
10Ω
8
3V
IN
9
10
7
3V
SENSE
GATE 3V
OUT
12
5V
IN
11
5V
SENSE
1.2k
BD_SEL#
V(I/O)
3k
HEALTHY#
PCI_RST#
3k
1k
15
3
4
16
OFF/ON
FAULT
LTC1646
PWRGD
RESETIN
GND
6
PRECHARGE
13
18Ω
4.7nF
18Ω
DRIVE
14
1k
12Ω
LOCAL_PCI_RST#
GROUND
10k
10Ω
I/O PIN 1
DATA BUS
Z1, Z2: BZX84C6V2
PRECHARGE OUT
1V
±10%
I
OUT
=
±
55mA
MMBT2222A
3V
IN
DATA LINE EXAMPLE
DATA BUS
Figure 1
U
U
U
5V
5A
3.3V
7.6A
R4
10Ω
5
5V
OUT
TIMER
2
R5
1k, 5%
C1
0.01µF
10k
0.1µF
3V
OUT
3k
RESETOUT
1
3V
IN
3.3V
RESET#
I/O
5V
IN
5V
PCI
BRIDGE
(21154)
1646 F01
1646fa
1

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Description Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N T/R Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N Tube Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N T/R Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N T/R Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N Tube Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N T/R Hot Swap Controller 2-CH 7V N-Channel Positive Low Voltage 16-Pin SSOP N
EU restricts the use of certain hazardous substances Compliant Compliant Not Compliant Compliant Not Compliant Compliant Not Compliant Not Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Unconfirmed Active Unconfirmed Active Unconfirmed Unconfirmed
Type Positive Low Voltage Positive Low Voltage Positive Low Voltage Positive Low Voltage Positive Low Voltage Positive Low Voltage Positive Low Voltage Positive Low Voltage
Fault Management Latched Off Latched Off Latched Off Latched Off Latched Off Latched Off Latched Off Latched Off
External FET N-Channel N-Channel N-Channel N-Channel N-Channel N-Channel N-Channel N-Channel
Number of Channels 2 2 2 2 2 2 2 2
PGOOD Output Logic Active Low Active Low Active Low Active Low Active Low Active Low Active Low Active Low
Minimum Operating Supply Voltage (V) 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7
Maximum Operating Supply Voltage (V) 7 7 7 7 7 7 7 7
Typical Circuit Breaker Threshold Voltage (mV) 56 56 56 56 56 56 56 56
Maximum Supply Current (mA) 4 4 4 4 4 4 4 4
External Sense Resistor Yes Yes Yes Yes Yes Yes Yes Yes
Maximum Operating Temperature (°C) 85 70 70 70 70 85 85 85
Supplier Temperature Grade Industrial Commercial Commercial Commercial Commercial Industrial Industrial Industrial
Pin Count 16 16 16 16 16 16 16 16
Standard Package Name SOP SOP SOP SOP SOP SOP SOP SOP
Supplier Package SSOP N SSOP N SSOP N SSOP N SSOP N SSOP N SSOP N SSOP N
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 1.5(Max) 1.5(Max) 1.5(Max) 1.5(Max) 1.5(Max) 1.5(Max) 1.5(Max) 1.5(Max)
Package Length 4.98(Max) 4.98(Max) 4.98(Max) 4.98(Max) 4.98(Max) 4.98(Max) 4.98(Max) 4.98(Max)
Package Width 3.99(Max) 3.99(Max) 3.99(Max) 3.99(Max) 3.99(Max) 3.99(Max) 3.99(Max) 3.99(Max)
PCB changed 16 16 16 16 16 16 16 16
Lead Shape Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 - 8542.39.00.01 8542.39.00.01 8542.39.00.01
Packaging Tape and Reel Tube Tape and Reel Tape and Reel - Tube Tape and Reel -
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