LA5774 Datasheet, PDF (1/5 Pages) Sanyo Semicon Device – Monolithic Linear IC Separately-excited Step-down Switching Regulator (Variable Type)

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