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KIA78L05F View Datasheet(PDF) - KEC

Part NameDescriptionManufacturer
KIA78L05F BIPOLAR LINEAR INTEGRATED CIRCUIT KEC
KEC KEC
KIA78L05F Datasheet PDF : 16 Pages
First Prev 11 12 13 14 15 16
KIA78L05F~KIA78L24F
EXAMPLS OF TYPICAL CIRCUIT
(1) STANDARD APPLICATION
D1
RSD
VIN
3
1
KIA78LxxF
2
(2) A. CURRENT BOOST VOLTAGE REGULATOR
VIN
Q1
R1
3
1
KIA78LxxF
2
VOUT
D1 : Protection Diode
High speed diode D1 should be
connected as shown in the figure
if the condition VIN < VOUT
might occur by surge voltage or
power supply ON/OFF.
RSD : Power limiting resistor
for large VIN , resistor RSD is
needed to limit IC power
dissipation.
VOUT
Heat sink is needed for Q1
R1 <=
VBE1
I B(MAX)
where, VBE1 : VBE of external
transistor Q1
I B(MAX) : Quiescent current of IC
B. SHORT-CIRCUIT PROTECTION
VIN
RSC
Q1
R1 Q2
3
1
KIA78LxxF
2
VOUT
RSC =
VBE2
I SC
where,
I SC
:
Short-Circuit
current
(3) CURRENT REGULATOR
VIN
3
1
KIA78LxxF
2
2000. 9. 20
Revision No : 5
I OUT
I OUT =
VOUT
R
+ IB
13/16
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