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LTC1643HIGN

Description
热交换控制器 通道 CompactPCI™ 16-SSOP
Categorysemiconductor    Multi-channel IC (PMIC)   
File Size283KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC1643HIGN Overview

热交换控制器 通道 CompactPCI™ 16-SSOP

LTC1643HIGN Parametric

Parameter NameAttribute value
category
MakerADI
series-
PackagePipe fittings
typeheat exchange controller
internal switchnone
applicationCompactPCI™
Voltage - Power supply3.3V,5V,±12V
Operating temperature-40°C ~ 85°C
Installation typesurface mount type
Package/casing16-SSOP (0.154", 3.90mm wide)
Supplier device packaging16-SSOP
Basic product numberLTC1643
Contact Linear Technology for Potential Replacement
FOR INFORMATION PURPOSES ONLY
OBSOLETE:
LTC1643L/LTC1643L-1/LTC1643H
PCI-Bus Hot Swap
Controller
I
I
I
I
I
I
I
I
Allows Safe Board Insertion and Removal from a
Live PCI Slot
Works on either a Motherboard (LTC1643H) or
CompactPCI
TM
Card (LTC1643L/LTC1643L-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
APPLICATIO S
I
I
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
®
1643 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(LTC1643H)/ON (LTC1643L/LTC1643L-1)
pin is used to cycle the board power or reset the circuit
breaker. The LTC1643L-1 has the
±12V
power good com-
parators disabled.
The LTC1643 is available in a 16-pin narrow SSOP package.
TYPICAL APPLICATION
U
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
LTC1643H
12V
OUT
V
EEOUT
FAULT
TIMER
7
PWRGD
U
3.3V
7.6A
GND
16
15
4
C2
0.1µF
LOGIC
RESET
1643 TA01
FEATURES
DESCRIPTIO
U
12V
500mA
–12V
100mA
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