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LA5774 数据表(PDF) 1 Page - ON Semiconductor

部件名 LA5774
功能描述  Separately-excited Step-down Switching Regulator
Download  5 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

LA5774 数据表(HTML) 1 Page - ON Semiconductor

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31407 MS PC B8-9090 No.A0742-1/5
http://onsemi.com
Semiconductor Components Industries, LLC, 2013
August, 2013
LA5774
Overview
The LA5774 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
3A
SW pin application reverse voltage
VSW
-1
V
Allowable power dissipation
Pd max1
No heat sink
1.75
W
Pd max2
Infinite heat sink
7.5
W
Operating temperature
Topr
-30 to +125
C
Storage temperature
Tstg
-40 to +150
C
Recommended Operating Conditions at Ta = 25
C
Parameter
Symbol
Conditions
Ratings
Unit
Input voltage range
VIN
4.5 to 28
V
Ordering number : ENA0742
Monolithic Linear IC
Separately-excited Step-down
Switching Regulator
(Variable Type)
Ordering number : ENA0742
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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