參數(shù)資料
型號(hào)： LTC1643HCGN#PBF
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)： 5/16頁
文件大?。?/td> 278K
代理商： LTC1643HCGN#PBF
13
LTC1643L/LTC1643L-1/LTC1643H
APPLICATIONS INFORMATION
WU
U
circuit, PCI bridge chip and the LOCAL_PCI_RESET# logic
circuitry. The BD_SEL# signal is connected to the ON pin
while the PWRGD pin is connected to the HEALTHY#
signal. The HEATHLY# signal is combined with the
PCI_RESET# signal to generate the LOCAL_PCI_RESET#
signal. Capacitors C6 and C7 provide chip bypassing on
the 12V and –12V inputs. Diode D2 protects the part from
voltage surges below –13.2V on the –12V supply.
The 1V precharge voltage for the data bus lines is gener-
ated by an LT1117 low dropout regulator. The output of the
LT1117 is set to 1.8V, then the voltage is dropped by a
1N4148 diode to generate 1V. The precharge circuit is
capable of sourcing and sinking 40mA.
R1
0.005
1%
V(I/O)
Q2
IRF7413
Q1
IRF7413
R2
0.007
1%
R3
10
5%
R4
10
5%
R5
100
5%
C1
0.047
F
5V
5A
MED 5V
MED 3.3V
BD_SEL#
LONG GND
PCI_RST#
I/O
3.3V
7.6A
–12V
100mA
12V
500mA
PRECHARGE OUT
1V
±20%
IOUT = ±40mA
R9 2k 5%
R12 3
5%
R10 2k 5%
R8
1.2k
5%
LOCAL_PCI_RESET#
DATA LINE EXAMPLE
DATA BUS
R14
10
, 5%
11
3
13
12
14
16
15
4
8
10
9
5
6
3VIN
1
2
12V
–12V
12VIN
VEEIN
ON
FAULT
3VSENSE
5VSENSE
3VOUT
LTC1643L
5VOUT
12VOUT
VEEOUT
TIMER
5VIN
GATE
HEALTHY#
7
PWRGD
1643 F07
C2
0.1
F
GND
CompactPCI
CONNECTOR
C6
0.1
F
C5
0.1
F
C3
0.01
F
C4
1
F
D1
1N4148
R13
10k
5%
RESET#
LONG
3.3V
LONG
3.3V
LONG
5V
3.3V
PCI
BRIDGE
(21154)
5V
OUT
IN
ADJ
LT1117
R11
24
5%
R6
130
1%
R7
56.2
1%
I/O
R13
2k
5%
R11
1
5%
D2*
12V
D3*
12V
* BZX84C15 (SOT-23)
VALUE MAY VARY FOR BACKPLANES WITHOUT BYPASS CAPACITANCE
4
3
2
1
4
3
2
1
Figure 7. Typical CompactPCI Application
LTC1643L-1
The LTC1643L-1 is designed for CompactPCI designs
where the
±12V supplies are not being used on the board
or the supplies are not well regulated. The power good
comparators on the 12VOUT and VEEOUT pins are disabled.
The VEEIN pin can be connected to GND and the part will
still operate normally if a – 12VOUT output is not needed.
However, 12V is still required at the 12VIN pin for the part
to function. Refer to Figure 10 for a typical LTC1643L-1
application circuit.
Increasing 12V and – 12V Current Capability
The internal switches in the LTC1643 are designed for up
to 500mA loads on 12V and 200mA on – 12V. If more
current is needed, then the circuits in Figure 8 can be used.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1643L-1CGN 制造商:Linear Technology 功能描述:
LTC1643LCGN 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:POWER CONTROL/MANAGEMENT, 16 Pin, Plastic, SSOP
LTC1643LCGN#PBF 制造商:Linear Technology 功能描述:Hot Swap Controller 16-Pin SSOP N
LTC1644CGN 功能描述:IC CONTROLLER HOT SWAP 20-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件
LTC1644CGN#PBF 功能描述:IC CONTROLLER HOT SWAP 20-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開關(guān):無 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF)
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