Semiconductor
S1117AQ/S1117-xxQ
Adjustable and Fixed Voltage Regulator
Descriptions
The S1117 series of positive adjustable and fixed regulators are designed to provide 1A with high efficiency.
All internal circuitry is designed to operate down to 1.3V input to output differential. On-chip trimming adjusts
reference voltage to 2%.
Features
•
Adjustable or fixed output
•
Output current of 1A
•
Low dropout, 1.3V maximum at 1A output current
•
Thermal shutdown protection
Ordering Information
Type NO.
S1117AQ/S1117xxQ
Marking
S1117
ٱٱ
Q / S1117
ٱٱٱ
Q
Package Code
SOT-223
□□:Voltage
Code (Aj : 1.25V, 15:1.5V,:18: 1.8V, 25:2.5V, 33:3.3V, 50:5.0V)
□□□:Voltage
Code (285:2.85V)
Outline Dimensions
(Unit : mm)
BLOCK DIAGRAM
PIN Connections
1. GND / Adj.
2,4 Output
3. Input
KSD-I5A001-000
1
S1117AQ/S1117-xxQ
Absolute Maximum Ratings
Characteristic
Input voltage
Power Dissipation
Junction Temperature
Operating temperature range
Storage temperature range
[Ta=25°C]
Symbol
V
I
P
D
1(Note1)
P
D
2(Note2)
T
J
T
opr
T
stg
Rating
16
2.8
0.8
150
0 ~ +125
-55 ~ +150
Unit
V
W
°C
℃
°C
Note 1 : Mounted on a glass epoxy circuit board of 25.4 × 25.4mm. (at 1oz copper area)
Note 2 : No Heat sink
Recommended operating conditions
Characteristic
Input voltage
Output current
Symbol
V
I
I
O
Min.
V
O
+1.5V
1
Max.
V
O
+7V
1000
Unit
V
mA
Device Selection Guide
Device
S1117AQ
S1117-15Q
S1117-18Q
S1117-25Q
S1117-285Q
S1117-33Q
S1117-50Q
Output Voltage
Adjustable
1.50V
1.80V
2.50V
2.85V
3.30V
5.00V
Note 3 : Other fixed versions are available V
O
=1.5V ~ 5V
KSD-I5A001-000
2
S1117AQ/S1117-xxQ
Electrical Characteristics
(Electrical Characteristics at 0℃≤T
a
≤125℃
and V
I
=(V
O
+1.5V), Io=10mA, C
O
=10µF, unless otherwise specified.)
Characteristic
Symbol
Device
S1117A
Test Condition
*
V
I
= (V
O
+1.5V) to 7V
I
O
= 0 to 1000mA
*
V
I
= (V
O
+1.5V) to 7V
I
O
= 0 to 1000mA
*
V
I
= (V
O
+1.5V) to 7V
I
O
= 0 to 1000mA
*
V
I
= (V
O
+1.5V) to 7V
I
O
= 0 to 1000mA
*
V
I
= (V
O
+1.5V) to 7V
I
O
= 0 to 1000mA
*
V
I
= (V
O
+1.5V) to 7V
I
O
= 0 to 1000mA
*
V
I
= (V
O
+1.5V) to 7V
I
O
= 0 to 1000mA
1.5V≤ V
I
-V
O
≤7V
I
O
=10mA
1.5V≤ V
I
-V
O
≤7V
I
O
=10mA ~ 1000mA
I
O
=0
V
Adj
=0V
V
I
= (V
O
+1.5V) to 7V
I
O
= 100mA
1.5V
≤
V
I
- V
O
≤
7V
I
O
=10mA ~ 1000mA
I
O
=1000mA
I
O
=1000mA
V
Ripple
=1V
P-P
, f=120
㎐
I
O
≥1000mA
*
*
*
Min
1.23
1.20
1.47
1.44
1.76
1.73
2.45
2.40
2.79
2.74
3.23
3.17
4.90
4.80
*
*
-
-
-
Typ
1.25
Max
1.28
1.30
1.53
Unit
S1117-15
1.50
1.56
1.84
S1117-18
1.80
1.87
2.55
V
Output voltage
V
O
S1117-25
2.50
2.60
2.91
S1117-285
2.85
3.30
2.96
3.37
3.43
S1117-33
5.00
5.10
5.20
S1117-50
Line regulation
(Note4)
Load regulation
(Note4)
Quiescent
current
Minimum load
current
Adjust pin
current
Adjust pin
current change
Dropout voltage
Ripple
ratio
[ * ] Ta=25℃
rejection
│
△
V
O(△VI)
│
│
△
V
O(△IL)
│
I
QC
I
L(MIN)
I
ADJ
│∆I
ADJ
│
V
DROP
RR
I
LIMIT
All
All
All
S1117A
S1117A
S1117A
All
All
All
5
10
7
3
55
1
10
30
13
7
90
5
1.3
-
mV
mV
mA
mA
µA
µA
V
dB
A
-
60
1.1
1.2
72
Current limit
Note 4: Low duty pulse testing with Kelvin connections required.
KSD-I5A001-000
3
S1117AQ/S1117-xxQ
■
Typical Applications
V
I
(Fixed Version)
S1117-XX
V
O
Adj/GND
C
I
10
㎌
C
O
10
㎌
R
L
Fig. 1 Fixed Voltage Regulator
V
I
(Adjustable Version)
S1117A
Adj
Vo=3.5V
V
O
C
I
10
㎌
I
ADJ
R
1
125Ω
(1
％
)
R
2
225Ω
(1
％
)
C
O
10
㎌
Vo = V
ADJ
× (1 +
R
2
) + I
ADJ
× R
2
R
1
Fig. 2 Adjustable Voltage Regulator
Notes 5:
1) C
I
needed if device is far from filter capacitors
2) C
O
minimum value required for stability
KSD-I5A001-000
4
S1117AQ/S1117-xxQ
Electrical Characteristic Curves
Fig.3 V
DROP
vs I
O
2.0
1.20
Fig.4 Vo vs T
a
Output Voltage Deviation [%]
0.90
0.60
0.30
0.00
-0.3
-0.6
-0.9
-1.2
-25
0
25
50
75
100
125
150
V
I
=V
O
+1.5V, I
O
=500mA
Dropout Voltage V
DROP
[V]
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0
200
400
600
800
1000
Ta=0°C
50°C
125°C
Output Current I
O
[mA]
Fig.5 I
L(MIN)
vs V
I
-V
O
Minimum Load Current I
L(MIN)
[mA]
4.2
3.8
3.4
3.0
2.6
Ta=125℃
2.2
1.8
1.4
1.0
0
1
2
3
4
5
6
7
8
0℃
50℃
S1117A, V
Adj
=0
85
Ambient Temperature T
a
[℃]
Fig.6 I
Adj
vs Ta
V
I
=V
O
+1.5V, I
O
=100mA
Adjust Pin Current I
Adj
[µA]
80
75
70
65
60
55
45
40
-25
0
25
50
75
100
125
150
Input-Output Differential Voltage [V]
Fig.7 P
D
vs T
a
10
Ambient Temperature T
a
[℃]
Power dissipation P
D
[W]
8
T
C
=2
5°
C
6
4
2
0
Mounted on a glass
epoxy circuit board
of 25.4*25.4 mm
(at 1oz copper area)
Ta=25℃
0
25
50
75
100
150
125
Ambient Temperature T
a
[˚C]
KSD-I5A001-000
5
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