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LA5779 Scheda tecnica(PDF) 1 Page - ON Semiconductor

Il numero della parte LA5779
Spiegazioni elettronici  Separately-excited Step-down Switching Regulator
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Produttore elettronici  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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LA5779 Scheda tecnica(HTML) 1 Page - ON Semiconductor

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62707 MS PC 20070619-S00001 / N1306 MS PC 20060606-S00001 No.A0476-1/4
http://onsemi.com
Semiconductor Components Industries, LLC, 2013
August, 2013
LA5779
Overview
The LA5779 is a Separately-excited step-down switching regulator (variable type).
Functions
• High efficiency.
• Six external parts.
• Time-base generator (160kHz) incorporated.
• Current limiter incorporated.
• Thermal shutdown circuit incorporated.
• ON/OFF function.
Specifications
Absolute
Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum Input voltage
VIN max
30
V
Maximum Output current
IO max
3
A
SW pin application reverse voltage
VSW
-1
V
Pd max1
Infinitely large heat sink.
7.5
W
Allowable power dissipation
Pd max2
Independent IC.
1.75
W
Operating temperature
Topr
-30 to +125
°C
Storage temperature
Tstg
-40 to +150
°C
Junction temperature
Tj max
150
°C
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 : ENA0476A
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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