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SEMICONDUCTOR
TECHNICAL DATA
KIA278R05PI~KIA278R15PI
BIPOLAR LINEAR INTEGRATED CIRCUIT
Revision No : 3
4 TERMINAL 2A OUTPUT LOW DROP 
VOLTAGE REGULATOR
The KIA278Rᴧᴧ Series are Low Drop Voltage Regulator 
suitable for various electronic equipments.
It provides constant voltage power source with TO-220 4 terminal
lead full molded PKG.  The Regulator has multi function such as 
over current protection, overheat protection and ON/OFF control.
FEATURES
ᴌ2.0A Output Low Drop Voltage Regulator.
ᴌBuilt in ON/OFF Control Terminal.
ᴌBuilt in Over Current Protection, Over Heat
Protection Function.
LINE UP
A
F
J
L
D
M
1234
1
2
3
4
DC INPUT (V    ) 
DC OUTPUT (V   )
GND
ON/OFF CONTROL
IN
O    
DIM
MILLIMETERS
TO-220IS-4
10.00   0.20
15.00   0.20
2.70   0.20
0.60   0.10
Φ3.20   0.20
3.50   0.10
A
B
C
D
E
F
G
15.70   0.20
0.40   0.10
H
14.3+0.2/-0.1
1.45   0.10
1.00   0.10
2.54
4.50   0.20
7.5   0.1
1.50   0.10
J
K
L
M
N
O
P
S
R
8
5
B
C
E
G
H
L
V
V
U
T
K
N
O
R
S
P
+
_
+
_
+
_
1.30   0.1
3-1.00   0.1
1.30   0.1
T
U
V
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
MAXIMUM RATING  (Ta=25ᴱ)
ITEM OUTPUT VOLTAGE (Typ.) UNIT
KIA278R05PI 5
V
KIA278R06PI 6
KIA278R08PI 8
KIA278R09PI 9
KIA278R10PI 10
KIA278R12PI 12
* KIA278R15PI 15
CHARACTERISTIC SYMBOL RATING UNIT Remark
Input Voltage
V
IN
35 V -
ON/OFF Control Voltage
V
C
35 V -
Output Current
I
O
2 A -
Power Dissipation 1
P
d1
1.5 W No heatsink
Power Dissipation 2
P
d2
15 W with heatsink
Junction Temperature
T
j
125
ᴱ
-
Operating Temperature
T
opr
-20ᴕ80
ᴱ
-
Storage Temperature
T
stg
-30ᴕ125
ᴱ
-
Soldering Temperature (10sec)
T
sol
260
ᴱ
-
* Note) * : Under Development.