KIA78L05F Ver la hoja de datos (PDF) - KEC

Número de pieza

componentes Descripción

Fabricante

KIA78L05F

BIPOLAR LINEAR INTEGRATED CIRCUIT

KEC 

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

2014. 2. 26

Revision No : 6

I OUT

I OUT =

VOUT

R

+ IB

13/16

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