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LA5774MP Datasheet(PDF) 1 Page - ON Semiconductor

Part No. LA5774MP
Description  Separately-excited Step-down Switching Regulator
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LA5774MP Datasheet(HTML) 1 Page - ON Semiconductor

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72606 MS PC B8-9089 No.A0490-1/5
http://onsemi.com
Semiconductor Components Industries, LLC, 2013
August, 2013
LA5774MP
Overview
The LA5774MP is a Separately-excited step-down switching regulator (variable type).
Functions
• Low-ESR capacitor with increased reliability applicable as the output smoothing capacitor.
• High efficiency.
• Four external parts.
• Time-base generator (160kHz) incorporated.
• Current limiter incorporated.
• Thermal shutdown circuit incorporated.
• Soft start circuit incorporated.
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
Allowable power dissipation
Pd max
Mounted on a substrate.*
3.9
W
Operating temperature
Topr
-30 to +125
°C
Storage temperature
Tstg
-40 to +150
°C
* Specified substrate : 76.1×114.3×1.6mm
3 : Copper foil ratio 60
% FR4
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 : ENA0490
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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