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LA5754 Arkusz danych(PDF) 3 Page - Sanyo Semicon Device

Numer części LA5754
Szczegółowy opis  Monolithic Linear IC Separately-excited Step-down Switching Regulator (Variable Type)
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Producent  SANYO [Sanyo Semicon Device]
Strona internetowa  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA5754 Arkusz danych(HTML) 3 Page - Sanyo Semicon Device

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LA5754
No.A0951-3/5
VO = 1+
× 2.66V(typ)
R2
R1
Block Diagram
Application Circuit Example
VIN
SWOUT
VOS
GND
SS
L1
47
µH
C1
1000
µF
C2
1000
µF
D1
SBD
LA5754
C3
1
µF
R2
R1
Notes: C3 is for the soft start function. Delete C3 and keep the SS pin open when the soft function is not necessary.
Calculation equation to set the output voltage
This IC controls the switching output so that the VOS pin voltage becomes 2.66V (typ).
The equation to set the output voltage is as follows:
The VOS pin has the inrush current of 1µA (typ). Therefore, the error becomes larger when R1 and R2 resistance
values are large.
VIN 1
2 SWOUT
4 VOS
5 SS
Reg.
Comp.
Amp.
OSC
Reset
VREF
TSD
Drive
OCP
3 GND


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