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參數(shù)資料
| 型號： | LTC4244IGN-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)： | 22/28頁 |
| 文件大小： | 333K |
| 代理商： | LTC4244IGN-1 |
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22
LTC4244/LTC4244-1
42441f
PCB Layout Considerations
For proper operation of the LTC4244’s circuit breaker,
4-wire Kelvin sense connections between the sense resis-
tor and the LTC4244’s 5V
IN
and 5V
SENSE
pins and 3.3V
IN
and 3.3V
SENSE
pins are strongly recommended. The PCB
layout should be balanced and symmetrical to minimize
wiring errors. In addition, the PCB layout for the sense
resistors and the power MOSFETs should include good
thermal management techniques for optimal device power
dissipation. A recommended PCB layout for the sense
resistor, the power MOSFET and the GATE drive compo-
nents around the LTC4244 is illustrated in Figure 15. In Hot
APPLICATIOU
W
U
U
Swap applications where load currents can be 10A, nar-
row PCB tracks exhibit more resistance than wider tracks
and operate at more elevated temperatures. Since the
sheet resistance of 1 ounce copper foil is approximately
0.45m
/
o
, track resistance and voltage drops add up
quickly in high current applications. Thus, to keep PCB
track resistance, voltage drop and temperature to a mini-
mum, the suggested trace width in these applications for
1 ounce copper foil is 0.03” for each ampere of DC current.
In the majority of applications, it will be necessary to use
plated-through vias to make circuit connections from
component layers to power and ground layers internal to
1
2
3
4
5
6
7
8
9
1
2
1
1
1
1
1
1
1
1
1
LTC4244*
CURRENT FLOW
TO SOURCE
*ADDITIONAL DETAILS OMITTED FOR CLARITY
DRAWING IS NOT TO SCALE!
4244 F15
TRACK WIDTH W:
0.03" PER AMPERE
ON 1 OZ Cu FOIL
D
D
D
D
G
S
S
S
CURRENT FLOW
TO LOAD
CURRENT FLOW
TO LOAD
SENSE
RESISTOR
SO-8
VIA TO
GND PLANE
GND
GND
3.3V
OUT
3.3V
3.3V
IN
3.3V
VIA/PATH
TO GND
GATE
R3
R5
C1
C
TIMER
W
W
W
Figure 15. Recommended Layout for Power MOSFET, Sense Resistor and GATE Components for the 3.3V Rail
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4244IGN-1#PBF | 功能描述:IC CTLR HOT SWAP PCI 20-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:119 系列:- 類型:熱交換控制器 應用:通用型，PCI Express? 內部開關: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 供應商設備封裝:80-TQFP（12x12） 包裝:托盤 產品目錄頁面:1423 (CN2011-ZH PDF) |
| LTC4244IGN-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:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:119 系列:- 類型:熱交換控制器 應用:通用型，PCI Express? 內部開關: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 供應商設備封裝:80-TQFP（12x12） 包裝:托盤 產品目錄頁面:1423 (CN2011-ZH PDF) |
| LTC4244IGN-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:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:119 系列:- 類型:熱交換控制器 應用:通用型，PCI Express? 內部開關: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 供應商設備封裝:80-TQFP（12x12） 包裝:托盤 產品目錄頁面:1423 (CN2011-ZH PDF) |
| LTC4244IGNTR | 制造商:Linear Technology 功能描述: |
| LTC4245 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Supply Hot Swap Controller for Advanced Mezzanine Card |
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