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LTC1422IN8 bảng dữ liệu(PDF) 12 Page - Linear Technology

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LTC1422IN8 bảng dữ liệu(HTML) 12 Page - Linear Technology

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LTC1422
Power N-Channel and Sense Resistor Selection
The decision of which external power N-Channel to use is
dependent on its maximum current rating and the maxi-
mum allowed current times RDS(ON) drop across the
transistor. Table 1 lists some transistors that are available.
Table 2 lists some current sense resistors that can be
used with the circuit breaker. Since this information is
subject to change, please verify the part numbers with the
manufacturer. Table 3 lists the web sites of several manu-
facturers.
Table 1. N-Channel Selection Guide
CURRENT LEVEL (A)
PART NUMBER
DESCRIPTION
MANUFACTURER
0 to 2
MMDF3N02HD
Dual N-Channel SO-8
ON Semiconductor
RDS(ON) = 0.1Ω
2 to 5
MMSF5N02HD
Single N-Channel SO-8
ON Semiconductor
RDS(ON) = 0.025Ω
5 to 10
MTB50N06V
Single N-Channel DD Pak
ON Semiconductor
RDS(ON) = 0.028Ω
10 to 20
MTB75N05HD
Single N-Channel DD Pak
ON Semiconductor
RDS(ON) = 0.0095Ω
Table 2. Sense Resistor Selection Guide
CURRENT LIMIT VALUE
PART NUMBER
DESCRIPTION
MANUFACTURER
1A
LR120601R050
0.05
Ω 0.25W 1% Resistor
IRC-TT
2A
LR120601R025
0.025
Ω 0.25W 1% Resistor
IRC-TT
2.5A
LR120601R020
0.02
Ω 0.25W 1% Resistor
IRC-TT
3.3A
WSL2512R015F
0.015
Ω 1W 1% Resistor
Vishay-Dale
5A
LR120601R010
0.01
Ω 0.25W 1% Resistor
IRC-TT
10A
WSR2R005F
0.005
Ω 2W 1% Resistor
Vishay-Dale
Table 3. Manufacturers’ Web Sites
MANUFACTURER
WEB SITE
TEMIC Semiconductor
www.temic.com
International Rectifier
www.irf.com
ON Semiconductor
www.onsemiconductor.com
Harris Semiconductor
www.semi.harris.com
IRC-TT
www.irctt.com
Vishay-Dale
www.vishay.com
APPLICATIONS INFORMATION



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