參數(shù)資料
型號： LTC4244CGN-1
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： Rugged, CompactPCI Bus Hot Swap Controllers
中文描述： 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20
封裝： 0.150 INCH, PLASTIC, SSOP-20
文件頁數(shù)： 21/28頁
文件大?。?/td> 333K
代理商： LTC4244CGN-1
21
LTC4244/LTC4244-1
42441f
are experimentally determined based on the board’s para-
sitic resonance circuits. As a starting point, the capacitors
in these networks are chosen to be 10
×
to 100
×
the power
MOSFET’s C
OSS
under bias. The series resistor is a value
determined experimentally that ranges from 1
to 50
,
depending on the parasitic resonance circuit. Note that in
all LTC4244 circuit schematics, bothtransient voltage
limiters and snubber networks have been added to the
12V
IN
and V
EEIN
supply rails and should always be used.
Snubber networks are not necessary on the 3.3V
IN
or the
5V
IN
supply lines since their absolute maximum voltage
ratings are 13.5V. Transient voltage limiters, however, are
recommended as these devices provide large-scale tran-
sient protection for the LTC4244 in the event of abrupt
changes in supply current. All protection networks should
be mounted very close to the LTC4244’s supply pins using
short lead lengths to minimize trace resistance and induc-
tance. This is shown schematically in Figures 12 and 13
and a recommended layout of the transient protection
devices around the LTC4244 is shown in Figure 14.
APPLICATIOU
W
U
U
C1
0.047
μ
F
3.3V
IN
3V
IN
3.3V
5V
IN
5V
3.3V
SENSE
17
3.3V
OUT
18
5V
IN
13
5V
OUT
3
5V
SENSE
14
16
GATE
15
R3
10
R4
10
5V
OUT
5V
3V
OUT
3.3V
R5
1k
R1
0.005
Q1
IRF7457
Q2
IRF7457
R2
0.007
Z3
Z4
LTC4244*
GND
4244 F12
8
Z3, Z4: SMAJ5.0A
*ADDITIONAL DETAILS OMITTED FOR CLARITY
Figure 12. Place Transient Protection Devices Close to LTC4244’s 5V
IN
and 3.3V
IN
Pins
12V
IN
1
V
EEIN
12V
IN
–12V
IN
2
Z1
Z2
R14
10
C5
0.1
μ
F
LTC4244*
GND
4244 F16
8
Z1, Z2: SMAJ12CA
*ADDITIONAL DETAILS OMITTED FOR CLARITY
R13
10
C4
0.1
μ
F
1
2
3
4
5
6
7
8
9
1
2
1
1
1
1
1
1
1
1
1
VIAS TO
GND PLANE
C4
R13
GND
5V
IN
LTC4244*
*ADDITIONAL DETAILS OMITTED FOR CLARITY
DRAWING IS NOT TO SCALE!
4244 F14
3.3V
IN
V
EEIN
12V
IN
C5
R14
Z4
Z1
Z1
Z3
Figure 13. Place Transient Protection Devices
Close to LTC4244’s 12V
IN
and V
EEIN
Pins
Figure 14. Recommended Layout for Transient Protection
Components
相關(guān)PDF資料
PDF描述
LTC4244IGN Rugged, CompactPCI Bus Hot Swap Controllers
LTC4244IGN-1 Rugged, CompactPCI Bus Hot Swap Controllers
LTC4244CGN Rugged, CompactPCI Bus Hot Swap Controllers
LTC4252-1 TRANS ARRAY NPN/PNP SS MINI-6P
LTC4252 Negative 48V Hot Swap Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4244CGN-1#PBF 功能描述:IC CTRLR HOTSWAP PCI 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)
LTC4244CGN-1#TR 功能描述:IC CTRLR HOT SWAP CPCI 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: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)
LTC4244CGN-1#TRPBF 功能描述:IC CTRLR HOTSWAP PCI 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: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
LTC4244IGN 功能描述:IC CTRLR HOT SWAP CPCI 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: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)
LTC4244IGN#PBF 功能描述:IC CTRLR HOTSWAP PCI 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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