UPC337HF データシートの表示（PDF） - NEC => Renesas Technology
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UPC337HF Datasheet PDF : 8 Pages
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TYPICAL CONNECTION
INPUT
VIN
D2
µPC337
CIN
1µF
CADJ
10 µ F
+
ADJ
R2
µPC337
OUTPUT
R1
120 Ω
VO
D1
CO
4.7 µ F
+
Remark R1, R2 : Resistor to set the output voltage.
VO = (1 +
R2
R1
)
•
VREF
+
IADJ
•
R2
=• •
(1
+
R2 ) • VREF
R1
VO (V)
–1.25
–2.5
–5.0
–12
–24
–30
R2 (Ω : TYP.)
0
120
360
1032
2184
2760
CIN : Need to stop the oscillation for the long input wiring length.
CO : Need to stop the oscillation for the long output wiring length.
Improve the transient stability of the output voltage when the lord current is suddently changed.
CADJ : Improve the ripple rejection and the oscillate rejection.
D1 : Protect against CADJ from output short.
D2 : Need for VIN > VO.
3
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