KIA
SEMICONDUCTORS
1A LOW DROPOUT FIXED AND
ADJUSTABLE POSITIVE VOLTAGE REGULATORS
1117
SERIES
1.Description
The KIA1117 series of positive adjustable and fixed regulators is designed to provide 1A
for applications requiring high efficiency.All internal circuitry is designed to operated
down to 800mA input to output differential and the dropout voltage is fully specified as a
function of load current.
The KIA1117 offers current limiting and thermal protection.The on chip trimming adjusts
the reference voltage accuracy to 2%.
2.Features
Output current of 1A typical
Three-terminal adjustable or fixed
1.5V,1.8V,2.5V,2.85V,3.0V,3.3V,5.0V outputs
Thermal protection built in
Fast transient response
3.Applications
PC motherboard
LCD monitor
DVD-Video player
NIC/switch
Telecom equipment
High efficiency linear regulator
Printer and other peripheral equipment
Battery charger
4.Pinning information
Table1: Pinning-SOT223,simplified outline
Pin
1
2
3
Description
ADJ/GND
V
OUT
V
IN
Simplified outline
2
3
1
(SOT223 Front View)
9396 850 1656
KIA semiconductors All right reserved
Product data
Rev.01-11 April 2005
1 of 4
KIA
SEMICONDUCTORS
1A LOW DROPOUT FIXED AND
ADJUSTABLE POSITIVE VOLTAGE REGULATORS
1117
SERIES
5.Package information
2.5K/Reel
5K/Box
40K/CTN
6.Maximum ratings(Ta=25
o
C)
Table2: Maximum ratings
Parameter
Input voltage
Operating junction temperature
Storage temperature range
Symbol
V
IN
T
J
T
STG
Rating
12
0~+125
-40~150
Unit
V
o
C
o
C
7.Typical application
Table3: Typical application
V
IN
KIA1117-ADJ
V
OUT
R1
120
C
OUT
100uF
R2
1K
IN
OUT
GND
V
IN
>9.0V
KIA1117-5.0V
V
OUT
=7.5V
IN
OUT
GND
C
IN
10uF
VREF
C
IN
10uF
2.5V
C
OUT
100uF
V
OUT
= VRE F (1+ R2/R1)+IADJR2
Application 1:1.25V to 10V Adjustable Regulator
V
OUT
=7.5V
Application 2:Regulator with reference
9396 850 1656
KIA semiconductors All right reserved
Product data
Rev.01-11 April 2005
2 of 4
KIA
SEMICONDUCTORS
1A LOW DROPOUT FIXED AND
ADJUSTABLE POSITIVE VOLTAGE REGULATORS
1117
SERIES
8.Electrical characteristics
Table4: Electrical characteristics
( V
IN
=10V,I
OUT
=40mA,C
IN
=0.33uF, C
OUT
=0.1uF,T
J
=25
o
C ,Unless otherwise noted)
Parameter
Reference voltage
Symbol
Condition
I
OUT
=10mA,V
IN
-V
OUT
=1.5V
V
REF
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
OUT
V
O
10mA<I
OUT
<1A
V
OUT
+1.5V<V
IN
<12V
10mA<I
OUT
<1A, 3.0V<V
IN
<12V
10mA<I
OUT
<1A,3.3V<V
IN
<12V
10mA<I
OUT
<1A, 4.0V<V
IN
<12V
10mA<I
OUT
<1A,4.35V<V
IN
<12V
10mA<I
OUT
<1A,4.50V<V
IN
<12V
10mA<I
OUT
<1A,4.80V<V
IN
<12V
10mA<I
OUT
<1A,6.50V<V
IN
<12V
I
OUT
=10mA,V
OUT
+1.5V<V
IN
<12V
I
OUT
=10mA,V
OUT
+1.5V<V
IN
<12V
10mA<I
OUT
<1A, V
IN
-V
OUT
=3V
10mA<I
OUT
<1A,V
IN
=V
OUT
+1.5V
I
OUT
=10mA
V
I
OUT
=1A
Minimum load
current(Note1)
Quiescent current
Current limit
Adjust pin current
Thermal regulation
(Note2)
Ripple rejection
(Note2)
R
R
l
MIN
I
Q
l
CL
V
IN
<12V
V
IN
<12V
V
IN
-V
OUT
=5V
I
OUT
=10mA, V
IN
-V
OUT
=2V
T
A
=25 C,30 ms pulse
f
o
=120H
Z
,1V
RMS
,l
o
=400mA,
V
IN
-V
OUT
=3V
60
o
Min
1.237
1.225
1.470
1.764
2.450
2.793
2.940
3.234
4.900
Typ
1.250
1.250
1.500
1.800
2.500
2.850
3.000
3.300
5.000
0.035
1.0
0.2
1.0
0.8
1.1
5
5
Max
1.263
1.275
1.530
1.836
2.550
2.907
3.060
3.366
5.100
0.2
6.0
0.4
10.0
1.15
1.30
Unit
V
V
V
V
V
V
V
V
V
%
mV
%
mV
V
V
mA
1.5v
1.8v
O u t p u t 2.5v
voltage 2.85v
3.0v
3.3v
5v
Line regulation
Load regulation
V
O
Dropout voltage
10
1.5
120
0.04
mA
A
uA
%/W
dB
0.9
1.1
50
0.008
75
Note1:For the adjustable device,the minimum load current is the minimum current required to maintain regulation.
Normally the current in the resistor divider used to set the output voltage is selected to meet the minimum
load current equirement.
Note2: These parameters,although guaranteed,are not tested in production.
9396 850 1656
KIA semiconductors All right reserved
Product data
Rev.01-11 April 2005
3 of 4
KIA
SEMICONDUCTORS
1A LOW DROPOUT FIXED AND
ADJUSTABLE POSITIVE VOLTAGE REGULATORS
1117
SERIES
10.SOT223 package outline
Table5: SOT223 package outline
DIMENSIONS(mm are the original dimensions)
D
B1
H
1
2
3
E
A
N
C
L2
L
B
e
e1
Dim
A
B
B1
C
D
E
Min
1.80REF
0.60
2.90
0.24
6.30
3.30
Max
Dim
e
e1
H
L
L2
N
Min
2.30REF
4.60REF
6.70
0.91
0.02
0
o
Max
0.80
3.10
0.32
6.70
3.70
7.30
0.10
10
o
9396 850 1656
KIA semiconductors All right reserved
Product data
Rev.01-11 April 2005
4 of 4
stm32/stm8
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