參數(shù)資料
型號(hào)： MAX4271-MAX4273
廠商： Maxim Integrated Products, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 3V to 12V Current-Limiting Hot Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection
中文描述： 3V至12V的電流限制與自動(dòng)重試，DualSpeed熱插拔控制器/雙層故障保護(hù)
文件頁(yè)數(shù)： 23/24頁(yè)
文件大?。?/td> 407K
代理商： MAX4271-MAX4273
Calculate the MOSFET thermal resistance required
for a short to ground.
Z
θ
JA
= (150
°
C - 85
°
C) / (5V
10A) = 1.30
°
C/W
Using t
START
= 1ms as the pulse duration, use
Figure 17 to select a duty cycle. The duty cycle
should be about 0.01 or less. This implies t
RETRY
=
t
START
/ 0.01 = 100ms. From Figure 8, C
TIM
= 10nF.
Layout Considerations
To take full tracking advantage of the switch response time
to an output fault condition, it is important to keep all traces
as short as possible and to maximize the high-current
trace dimensions to reduce the effect of undesirable para-
sitic inductance. Place the MAX4271/MAX4272/MAX4273
close to the card
’
s connector. Use a ground plane to mini-
mize impedance and inductance. Minimize the current-
sense resistor trace length (<10mm), and ensure accurate
current sensing with Kelvin connections (Figure 18).
When the output is short circuited, the voltage drop
across the external MOSFET becomes large. Hence,
the power dissipation across the switch increases, as
does the die temperature. An efficient way to achieve
good power dissipation on a surface-mount package is
to lay out two copper pads directly under the MOSFET
package on both sides of the board. Connect the two
pads to the ground plane through vias, and use
enlarged copper mounting pads on the top side of the
board.
M
3V to 12V Current-Limiting Hot Swap Controllers
with Autoretry, DualSpeed/BiLevel Fault Protection
______________________________________________________________________________________
23
CTIM
CSPD
GND
1
2
8
7
ON
STAT
SENSE
GATE
IN
SO
TOP VIEW
3
4
6
5
MAX4271
MAX4272
Pin Configurations
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
RTH
OUTC
INC
REF
ON
STAT
CTIM
CSPD
CTON
MAX4273
QSOP/SO
AUXVCC
IN
CEXT
SENSE
GATE
LLMON
GND
Figure 18. Kelvin Connections for the Current-Sense Resistors
SENSE RESISTOR
HIGH-CURRENT PATH
MAX4271
MAX4272
MAX4273
相關(guān)PDF資料
PDF描述
MAX4271ESA 3V to 12V Current-Limiting Hot Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection
MAX4272ESA 3V to 12V Current-Limiting Hot Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection
MAX427EPA Low Noise, High-Precision Op Amps
MAX437EPA Low Noise, High-Precision Op Amps
MAX427ESA Low Noise, High-Precision Op Amps
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4272ESA 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX4272ESA+ 功能描述:熱插拔功率分布 3-12V Current-Limit Hot Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX4272ESA+T 功能描述:熱插拔功率分布 3-12V Current-Limit Hot Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX4272ESA-T 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX4273EEE 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*