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LTC1643AL-1

Description
PCI-Bus Hot Swap Controller
File Size239KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LTC1643AL-1 Overview

PCI-Bus Hot Swap Controller

LTC1643AL
LTC1643AL-1/LTC1643AH
PCI-Bus Hot Swap
Controller
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
Allows Safe Board Insertion and Removal from a
Live PCI Slot
Works on either a Motherboard (LTC1643AH) or
CompactPCI
TM
Card (LTC1643AL/LTC1643AL-1)
Controls –12V, 3.3V, 5V, 12V Supplies
Programmable Foldback Current Limit with
Circuit Breaker
User-Programmable Supply Voltage Power-Up Rate
High Side Drive for External N-Channel MOSFETs
–12V and 12V On-Chip Switches
Fault and Power-Good Outputs
Available in a Narrow 16-Lead SSOP Package
APPLICATIO S
s
s
PCI-Based Servers
CompactPCI Compliant Boards
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
CompactPCI is a trademark of PCI Industrial Computer Manufacturing Group.
The LTC
®
1643A is a Hot Swap
TM
controller that allows a board
to be safely inserted and removed from a live PCI-Bus slot.
Two external N-channel transistors control the 3.3V and 5V
supplies while on-chip switches control the –12V and 12V
supplies. All supply voltages can be ramped up at a program-
mable rate. An electronic circuit breaker protects all four
supplies against overcurrent faults. The foldback current limit
feature limits current spikes and power dissipation when
shorts occur and allows boards with large capacitances to be
powered up without tripping the circuit breaker. The PWRGD
output indicates when all of the supply voltages are within
tolerance and the FAULT output indicates an overcurrent
condition. The ON(LTC1643AH)/ON (LTC1643AL/
LTC1643AL-1) pin is used to cycle the board power or reset
the circuit breaker. The LTC1643AL-1 has the
±12V
power
good comparators disabled.
The LTC1643A is available in a 16-pin narrow SSOP package.
TYPICAL APPLICATION
Hot Swappable PCI Supply
R1
0.007Ω
Q1
IRF7413
5V
5A
R2
0.005Ω
Q2
IRF7413
R6
10Ω
SYSTEM
POWER
SUPPLY
9
3V
IN
GND
1
12V
IN
2
V
EEIN
5
ON
8
PCI
POWER
SYSTEM
CONTROLLER
RESET
R3
10k
R4
10k
6
10
R5
10Ω
11
3
13
12
5V
SENSE
14
5V
OUT
R7
100Ω
C1
0.047µF
3V
SENSE
GATE
3V
OUT
5V
IN
12V
OUT
LTC1643AH
V
EEOUT
FAULT
TIMER
7
PWRGD
U
3.3V
7.6A
GND
16
15
4
C2
0.1µF
12V
500mA
–12V
100mA
LOGIC
RESET
1643A TA01
U
U
1643afa
1

LTC1643AL-1 Related Products

LTC1643AL-1 LTC1643ALIGN LTC1643ALCGN LTC1643AL-1IGN LTC1643AL-1CGN LTC1643AL LTC1643AHCGN LTC1643AHIGN LTC1643AH
Description PCI-Bus Hot Swap Controller PCI-Bus Hot Swap Controller PCI-Bus Hot Swap Controller PCI-Bus Hot Swap Controller PCI-Bus Hot Swap Controller PCI-Bus Hot Swap Controller PCI-Bus Hot Swap Controller PCI-Bus Hot Swap Controller PCI-Bus Hot Swap Controller
Brand Name - Linear Technology Linear Technology Linear Technology Linear Technology - Linear Technology Linear Technology -
Is it Rohs certified? - incompatible incompatible incompatible incompatible - incompatible incompatible -
Maker - Linear ( ADI ) - Linear ( ADI ) Linear ( ADI ) - Linear ( ADI ) Linear ( ADI ) -
Parts packaging code - SSOP SSOP SSOP SSOP - SSOP SSOP -
package instruction - SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25 - SSOP, SSOP16,.25 SSOP, SSOP16,.25 -
Contacts - 16 16 16 16 - 16 16 -
Manufacturer packaging code - GN GN GN GN - GN GN -
Reach Compliance Code - _compli _compli _compli _compli - _compli _compli -
ECCN code - EAR99 EAR99 EAR99 EAR99 - EAR99 EAR99 -
Other features - IT ALSO REQUIRES A -12V SUPPLY IT ALSO REQUIRES A -12V SUPPLY IT ALSO REQUIRES A -12V SUPPLY IT ALSO REQUIRES A -12V SUPPLY - IT ALSO REQUIRES A -12V SUPPLY IT ALSO REQUIRES A -12V SUPPLY -
Adjustable threshold - YES YES YES YES - YES YES -
Analog Integrated Circuits - Other Types - POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT - POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT -
JESD-30 code - R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 - R-PDSO-G16 R-PDSO-G16 -
JESD-609 code - e0 e0 e0 e0 - e0 e0 -
length - 4.8895 mm 4.8895 mm 4.8895 mm 4.8895 mm - 4.8895 mm 4.8895 mm -
Humidity sensitivity level - 1 1 1 1 - 1 1 -
Nominal Negative Supply Voltage (Vsup) - -12 V -12 V -12 V -12 V - -12 V -12 V -
Number of channels - 4 4 4 4 - 4 4 -
Number of functions - 1 1 1 1 - 1 1 -
Number of terminals - 16 16 16 16 - 16 16 -
Maximum operating temperature - 85 °C 70 °C 85 °C 70 °C - 70 °C 85 °C -
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY -
encapsulated code - SSOP SSOP SSOP SSOP - SSOP SSOP -
Encapsulate equivalent code - SSOP16,.25 SSOP16,.25 SSOP16,.25 SSOP16,.25 - SSOP16,.25 SSOP16,.25 -
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR - RECTANGULAR RECTANGULAR -
Package form - SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH - SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH -
Peak Reflow Temperature (Celsius) - 235 235 235 235 - 235 235 -
power supply - +-12 V +-12 V +-12 V +-12 V - +-12 V +-12 V -
Certification status - Not Qualified Not Qualified Not Qualified Not Qualified - Not Qualified Not Qualified -
Maximum seat height - 1.727 mm 1.727 mm 1.727 mm 1.727 mm - 1.727 mm 1.727 mm -
Maximum supply current (Isup) - 8 mA 8 mA 8 mA 8 mA - 8 mA 8 mA -
Maximum supply voltage (Vsup) - 12.6 V 12.6 V 12.6 V 12.6 V - 12.6 V 12.6 V -
Minimum supply voltage (Vsup) - 11.4 V 11.4 V 11.4 V 11.4 V - 11.4 V 11.4 V -
Nominal supply voltage (Vsup) - 12 V 12 V 12 V 12 V - 12 V 12 V -
surface mount - YES YES YES YES - YES YES -
technology - CMOS CMOS CMOS CMOS - CMOS CMOS -
Temperature level - INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL - COMMERCIAL INDUSTRIAL -
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) -
Terminal form - GULL WING GULL WING GULL WING GULL WING - GULL WING GULL WING -
Terminal pitch - 0.635 mm 0.635 mm 0.635 mm 0.635 mm - 0.635 mm 0.635 mm -
Terminal location - DUAL DUAL DUAL DUAL - DUAL DUAL -
Maximum time at peak reflow temperature - 20 20 20 20 - 20 20 -
width - 3.899 mm 3.899 mm 3.899 mm 3.899 mm - 3.899 mm 3.899 mm -
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