KIA78S24P(2011) データシートの表示（PDF） - KEC

部品番号

コンポーネント説明

メーカー

KIA78S24P
(Rev.:2011)

BIPOLAR LINEAR INTEGRATED CIRCUIT

KEC 

KIA78S05P~KIA78S24P

APPLICATION CIRCUIT

(1) STANDARD APPLICATION

D1

RSD

VIN

3

1

KIA78xxP

2

(2) A. CURRENT BOOST VOLTAGE REGULATOR

VIN

Q1

R1

3

1

KIA78SxxP

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

KIA78SxxP

2

VOUT

RSC =

V BE2

I SC

where,

I SC

:

Short-Circuit

current

(3) CURRENT REGULATOR

VIN

3

1

KIA78SxxP

2

2011. 4. 5

Revision No : 3

I OUT

I OUT =

VOUT

R

+ IB

13/16

Share Link: