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LA5744TP bảng dữ liệu(PDF) 1 Page - ON Semiconductor

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Giải thích chi tiết về linh kiện  Separately-Excited Step-Down Switching Regulator
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42007 MS PC 20070420-S00001 / 11707 MS PC 20061204-S00012 No.A0647-1/5
http://onsemi.com
Semiconductor Components Industries, LLC, 2013
August, 2013
LA5744TP
Overview
The LA5744TP is a separately-excited step-down switching regulator (variable type).
Functions
• High efficiency.
• Time-base generator (300kHz) incorporated.
• Current limiter incorporated.
• Thermal shutdown circuit incorporated.
• Soft start circuit incorporated.
Specifications
Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Input voltage
VIN
30
V
Maximum output current
IO max
2A
SW pin application reverse voltage
VSW
-1
V
Allowable power dissipation
Pd max
Mounted on a circuit board.*
1.1
W
Operating temperature
Topr
-30 to +125
°C
Storage temperature
Tstg
-40 to +150
°C
* Specified circuit board : 76.1
×114.3×1.6mm3, glass epoxy.
Recommended Operating Conditions at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Input voltage range
VIN
4.5 to 28
V
Monolithic Linear IC
Separately-Excited Step-Down
Switching Regulator
(Variable Type)
Ordering number : ENA0647A
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.


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