KEC KIA278R00PI

SEMICONDUCTOR
KIA278R00PI
TECHNICAL DATA
BIPOLAR LINEAR INTEGRATED CIRCUIT
2A ADJUSTABLE LOW DROP VOLTAGE REGULATOR
The KIA278R00PI is a 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.
C
F
A
O
G
B
E
V
V
L
U
FEATURES
S
R
L
K
T
J
H
Adjustable Output Voltage (Range : 1.5~30V)
D
1.0A Output Low Drop Voltage Regulator.
Built in Over Current Protection, Over Heat Protection Function.
N
M
1
2
3
4
P
1
2
3
DIM MILLIMETERS
_ 0.20
A
10.00 +
_ 0.20
B
15.00 +
_ 0.20
C
2.70 +
_ 0.10
D
0.60 +
_ 0.20
Φ3.20 +
E
_ 0.10
F
3.50 +
_ 0.20
G
15.70 +
_ 0.10
H
0.40 +
14.3+0.2/-0.1
J
_ 0.10
1.45+
K
_ 0.10
1.00 +
L
2.54
M
_ 0.20
N
4.50 +
_ 0.1
O
7.5 +
_ 0.10
P
1.50 +
R
5
S
8
_ 0.1
T
1.30 +
_ 0.1
U
3-1.00 +
_ 0.1
V
1.30 +
4
DC INPUT (V IN )
DC OUTPUT (VO )
GND
ADJUSTABLE
TERMINAL
(VADJ )
TO-220IS-4
MAXIMUM RATINGS (Ta=25
)
CHARACTERISTIC
SYMBOL
RATING
UNIT
Remark
Input Voltage
VIN
35
V
-
Output Current
IOUT
2
A
-
Power Dissipation 1
PD1
1.5
W
No heatsink
Power Dissipation 2
PD2
15
W
with heatsink
Tj
125
-
Operating Temperature
Topr
-20 80
-
Storage Temperature
Tstg
-30 125
-
Soldering Temperature (10sec)
Tsol
260
-
Junction Temperature
2004. 3. 9
Revision No : 0
1/5
KIA278R00PI
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, VIN=15V, VO=10V, IO=1A, R1=470
CHARACTERISTIC
(Note1 : VIN=0.95Vout ))
SYMBOL
CONDITIONS
MIN.
Input Voltage
VIN
-
Output Voltage
VO
Load Regulation
Reg Load
Line Regulation
Reg Line
Ripple Rejection
R
R
TYP.
MAX.
4.5
-
35
V
1.5
-
30
V
IO=5mA 2A
-
-
2.0
%
VIN=11V~28V
-
-
2.5
%
45
55
-
55
65
-
1.26
1.29
1.32
V
-
%
R2=76
to 10.5k
Cref=0
Cref=3.3 F
Vref
Reference Voltage
Temperature cofficient of reference Voltage
TC Vref
Refer to Fig.2
-
Tj=0~125
DropOut Voltage
VD
IO=2A
Quiescent Current
IQ
IO=0A
(Note1)
UNIT
dB
-
1.0
-
-
0.5
V
-
-
10
mA
BLOCK DIAGRAM
2 VOUT
VIN 1
-
4 VADJ
+
BANDGAP
REFERENCE
ASO
PROTECTION
OVER HEAT
PROTECTION
3
GND
2004. 3. 9
Revision No : 0
2/5
KIA278R00PI
Fig. 1 Standard Test Circuit
2
1
R2
Io
A
4
3
V
VIN
R1
470Ω
0.33µF
A
Iq
47µF
RL
R2
R2
VOUT = Vref x ( 1 + R1 ) = 1.29 x ( 1 + R1 )
Fig. 2 Ripple Rejection Circuit
2
1
+
_
R2
ein
Cref
3.3µF
Io
A
4
3
V
+
_
2004. 3. 9
VIN
0.33µF
A
Revision No : 0
IQ
R1
470Ω
47µF
RL
f=120Hz(sine wave)
ei=0.5Vrms
RR=20log(ei/eo)
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KIA278R00PI
Fig. 4
Fig. 3 Ta - PD
RELATIVE OUTPUT VOLTAGE (%)
POWER DISSIPATION (W)
20
P D1 : No heat sink
p D 2 : With infinite heat sink
PD 2
15
10
5
PD1
0
-25
0
50
100
I O - VO
100
80
60
40
20
0
1.0
0
150
AMBIENT TEMPERATURE Ta ( C)
2.0
3.0
4.0
OUTPUT CURRENT I O (A)
Note) Oblique line portion : Overheat
protection may operate in this
area.
10
VO
Fig. 6 VIN - VO
15
R1=470Ω, R2=3.2KΩ
V IN =15V
I O =1.0A
5
OUTPUT VOLTAGE Vo (V)
REFERENCE VOLTAGE DEVIATION
Vref (mV)
Fig. 5 T j -
0
-5
0
25
50
75
100
RL=
R L=5Ω
5
5
0
125
10
JUNCTION TEMPERATURE T j ( C)
INPUT VOLTAGE VIN (V)
Fig. 7 T j - VD
Fig. 8 T j - I q
0.5
10
QUIESCENT CURRENT I q (mA)
DROPOUT VOLTAGE VD (V)
10
0
-10
-25
0.4
I O =2A
0.3
I O=1.5A
0.2
I O=1A
0.1
I O =0.5A
15
V IN =35V
I O =0
8
6
4
2
0
0
-25
0
25
50
75
100
JUNCTION TEMPERATURE T j ( C)
2004. 3. 9
R1=470Ω, R2=3.2KΩ
T j =25 C
Revision No : 0
125
-25
0
25
50
75
100
125
JUNCTION TEMPERATURE Tj ( C)
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KIA278R00PI
Fig. 9 f - RR
Fig. 10 I O - RR
80
70
Cref=3.3µF
60
Cref=0
RIPPLE REJECTION RR (dB)
RIPPLE REJECTION RR (dB)
80
50
40
30
R1=470Ω, R2=3.2KΩ
I O =1A
20
T j =25 C
ei=0.5Vrms
10
RR=20 log (ei/eo)
Cref=3.3µF
60
Cref=0
50
R1=470Ω, R2=3.2KΩ
T j =25 C
ei=0.5Vrms
f=120Hz (sine wave)
RR=20 log (ei/eo)
40
30
0
0.1
1
10
INPUT RIPPLE FREQUENCY f (kHz)
2004. 3. 9
70
Revision No : 0
100
0.1
0.5
1.0
OUTPUT CURRENT I O (A)
5/5