參數(shù)資料
型號: LTC1643LCGN#TR
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
封裝: 0.150 INCH, PLASTIC, SSOP-16
文件頁數(shù): 1/16頁
文件大?。?/td> 278K
代理商: LTC1643LCGN#TR
1
LTC1643L/LTC1643L-1/LTC1643H
PCI-Bus Hot Swap
Controller
Hot Swappable PCI Supply
I
Allows Safe Board Insertion and Removal from a
Live PCI Slot
I
Works on either a Motherboard (LTC1643H) or
CompactPCITM Card (LTC1643L/LTC1643L-1)
I
Controls –12V, 3.3V, 5V, 12V Supplies
I
Programmable Foldback Current Limit with
Circuit Breaker
I
User-Programmable Supply Voltage Power-Up Rate
I
High Side Drive for External N-Channel MOSFETs
I
–12V and 12V On-Chip Switches
I
Fault and Power-Good Outputs
The LTC1643 is a Hot SwapTM 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.Allsupplyvoltagescanberampedupataprogram-
mable rate. An electronic circuit breaker protects all four
suppliesagainstovercurrentfaults.Thefoldbackcurrentlimit
feature limits current spikes and power dissipation when
shortsoccurandallowsboardswithlargecapacitancestobe
poweredupwithouttrippingthecircuitbreaker.ThePWRGD
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.
I
PCI-Based Servers
I
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.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATION
U
R2
0.005
Q2
IRF7413
Q1
IRF7413
R1
0.007
R5
10
R6
10
R7
100
C1
0.047
F
5V
5A
3.3V
7.6A
GND
–12V
100mA
12V
500mA
R3
10k
R4
10k
11
3
13
12
14
16
15
4
10
9
8
1
2
5
6
7
3VIN
GND
12VIN
VEEIN
ON
FAULT
PWRGD
3VSENSE
5VSENSE
3VOUT
LTC1643H
5VOUT
12VOUT
VEEOUT
TIMER
5VIN
GATE
1643 TA01
SYSTEM
POWER
SUPPLY
PCI
POWER
SYSTEM
CONTROLLER
C2
0.1
F
RESET
LOGIC
RESET
FOR INFORMATION PURPOSES ONLY
OBSOLETE:
Contact Linear Technology for Potential Replacement
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