SEMICONDUCTOR
KIA78R25F~KIA78R37F
TECHNICAL DATA
5 TERMINAL LOW DROP VOLTAGE REGULATOR
The KIA78Rᴧᴧ series are Low Drop Voltage
Regulator suitable for various electronic equipments.
It provides constant voltage power source with DPAK-5
terminal surface mount type PKG.
The Regulator has multi function such as over current
protection, overheat protection and ON/OFF control.
FEATURES
ᴌ1.0A Output Low Drop Voltage Regulator.
ᴌBuilt in ON/OFF Control Terminal.
ᴌBuilt in Over Current Protection, Over Heat
Protection Function.
LINE UP
ITEM OUTPUT VOLTAGE (Typ.) UNIT
KIA78R25F 2.5
BIPOLAR LINEAR INTEGRATED CIRCUIT
A
C
D
B
E
F
2
345
1
I
J
M
N
H
O
L
P
MILLIMETERS
1
2
3
4
5
DIM
A
B
C
D
E
F
H
J
L
M
N
O
P
I
_
+
6.6 0.2
_
+
6.1 0.2
_
+
5.0 0.2
_
+
1.10 0.2
_
+
2.70 0.2
_
+
1.27 0.1
0.5+0.2/-0.1
_
+
2.30 0.2
_
+
0.5 0.1
_
+
0.50 0.1
_
+
0.8 0.2
0 ~0.25
0.7MIN
_
+
1.00 0.1
DC INPUT (V )
ON/OFF CONTROL (V )
DC OUTPUT (V )
N.C
GND
IN
O
C
DPAK-5
KIA78R30F 3.0
KIA78R33F 3.3
KIA78R35F 3.5
KIA78R37F 3.7
MAXIMUM RATINGS (Ta=25ᴱ)
CHARACTERISTIC SYMBOL RATING UNIT REMARK
Input Voltage
ON/OFF Control Voltage
Output Current
Power Dissipation 1
Junction Temperature
Operating Temperature
Storage Temperature
Soldering Temperature (10sec)
V
V
IN
V
C
I
O
P
d
T
j
T
opr
T
stg
T
sol
35 V -
35 V -
1 A -
8 W Infinite heat sink
125
-20ᴕ80
-30ᴕ125
260
ᴱ
ᴱ
ᴱ
ᴱ
-
-
-
-
2001. 5. 31 1/5
Revision No : 1
KIA78R25F~KIA78R37F
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, I
CHARACTERISTIC SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Output Voltage
Load Regulation Reg Load
Line Regulation Reg Line (Note 2) - 0.5 2.5 %
Temperature Coefficient of Output Voltage
Ripple Rejection
Drop Out Voltage
Output ON state for control Voltage
Output ON state for control Current
Output OFF state for control Voltage
Output OFF state for control Current
Quiescent Current
Note1) VINof KIA78R25=4.2V Note2) VINof KIA78R25=3.2ᴕ10V Note3) At VIN=0.95V
" KIA78R30=4.7V " KIA78R30=3.7ᴕ10V
" KIA78R33=5.0V " KIA78R33=4.0ᴕ10V
" KIA78R35=5.2V " KIA78R35=4.2ᴕ10V
" KIA78R37=5.4V " KIA78R37=4.4ᴕ10V
=0.5A, Ta=25ᴱ, Note1.)
O
KIA78R25
- 2.438 2.50 2.562
KIA78R30 - 2.925 3.00 3.075
KIA78R33 - 3.220 3.30 3.380
V
O
KIA78R35 - 3.413 3.50 3.587
KIA78R37 - 3.608 3.70 3.792
TCV
RᴌR
V
V
C(ON)
I
C(ON)
V
C(OFF)
I
C(OFF)
I
IO=5mAᴕ1A
Tj=0ᴕ125ᴱ
O
- 45 55 - dB
D
IO=1A
- 2.0 - - V
VC=2.7V
- - - 0.8 V
VC=0.4V
Q
IO=0
- 0.1 2.0 %
-
ᴦ0.02 ᴦ0.05 %/ᴱ
- - 0.5 V
- - 20
- - -0.4 mA
- - 10 mA
O
V
ỌA
BLOCK DIAGRAM
V
IN
Control
1
2
BANDGAP
REFERENCE
OUTPUT ON/OFF
CONTROL
ASO
PROTECTION
OVER HEAT
PROTECTION
5
GND
V
3
o
-
+
2001. 5. 31 2/5
Revision No : 1
KIA78R25F~KIA78R37F
Fig. 1 Standard Test Circuit
V
IN
13
KIA78RXXF
5
0.33µF
A
I
Fig. 1-2 Ripple Rejection Test Circuit
13
KIA78RXXF
e
i
5
V
IN
0.33µF
47µF
V
c
2
A
I
q
2
c
47µF
A
R
L
V
o
I
o
V
R
L
V
e
o
f=120Hz(sine wave)
ei=0.5Vrms
RR=20log(ei/eo)
Fig. 2 Application Circuit for Standard
V
IN
2001. 5. 31 3/5
Revision No : 1
1
Specific IC
2
ON/OFF
signal
CMOS or TTL
3
5
V
o
C
o
High or Open:Output ON
Low
Load
:Output OFF
KIA78R25F~KIA78R37F
j
Fig.3 Ta - P
10
P
D
8
5
POWER DISSIPATION P (W)
0
-20
Note) Oblique line portion : Overheat
protection may operate in this
area.
150
o
100
D
0 50 100 150
AMBIENT TEMPERATURE Ta ( C)
Fig.5-1 T - V (KIA78R25)
V =4.2V
IN
I =0.5A
O
j
D
P :With infinite heat sink
D
80
o
Fig.4 I - V
100
80
60
40
20
RELATIVE OUTPUT VOLTAGE (%)
0
0
150
o
100
0.5 1.0 1.5 2.0
OUTPUT CURRENT I (A)
Fig.5-2 T - V (KIA78R30)
V =4.7V
IN
I =0.5A
O
j
OO
O
o
50
0
-50
-100
OUTPUT VOLTAGE DEVIATION V (mV)
-25
0 25 50 75 100 125
JUNCTION TEMPERATURE T ( C)
Fig.5-3 T - V (KIA78R33)
o
j
200
150
V =5.0V
I =0.5A
O
o
100
50
0
-50
50
0
-50
-100
010050 75
OUTPUT VOLTAGE DEVIATION V (mV)
j
-25
JUNCTION TEMPERATURE T ( C)
Fig.5-4 T - V (KIA78R35)
25
j
o
j
125
200
V =5.2V
o
150
IN
I =0.5A
O
100
50
0
-50
-100
-150
OUTPUT VOLTAGE DEVIATION V (mV)
-25IN0755025
100 125
JUNCTION TEMPERATURE T ( C)
2001. 5. 31 4/5
Revision No : 1
-100
-150
OUTPUT VOLTAGE DEVIATION V (mV)
-25
05025 75 125
JUNCTION TEMPERATURE T ( C)
100
j
KIA78R25F~KIA78R37F
Fig.5-5 T - V (KIA78R37)
o
j
250
V =5.4V
o
200
IN
I =0.5A
O
150
100
50
0
-50
-100
-150
-200
-25
OUTPUT VOLTAGE DEVIATION V (mV)
02550
JUNCTION TEMPERATURE T ( C)
Fig.7 T - I
10
V =35V
IN
I =0
O
8
q
q
j
6
4
2
QUIESCENT CURRENT I (mA)
0
-25
0 25 50 75 100 125
100
75 125
j
Fig.6 T - V
0.5
0.4
D
0.3
0.2
0.1
DROPOUT VOLTAGE V (V)
0
-25
0 25 50 75 100 125
JUNCTION TEMPERATURE T ( C)
Fig.8-1 f - RR
80
70
60
50
40
I =0.5A,ei=0.5V
O
30
V =4.2V(KIA78R25)
IN
V =4.7V(KIA78R30)
IN
20
V =5.0V(KIA78R33)
IN
V =5.2V(KIA78R35)
RIPPLE REJECTION RR (dB)
IN
10
V =5.4V(KIA78R37)
IN
0
0.1
rms
110100
I =1A
O
j
D
I =0.75A
O
I =0.5A
O
I =0.25A
O
j
JUNCTION TEMPERATURE T ( C)
Fig.10-2 I - RR
j
O
INPUT RIPPLE FREQUENCY f (kHz)
70
60
50
f=120Hz,ei=0.5V
40
C =3.3µF
ref
V =4.2V(KIA78R25)
IN
V =4.7V(KIA78R30)
30
RIPPLE REJECTION RR (dB)
20
IN
V =5.0V(KIA78R33)
IN
V =5.2V(KIA78R35)
IN
V =5.4V(KIA78R37)
IN
0.1
2001. 5. 31 5/5
rms
0.5 1.0
OUTPUT CURRENT I (A)
O
Revision No : 1
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