NIKO-SEM
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
GENERAL DESCRIPTION
FEATURES
L1117 Series
SOT-223, TO-252,
-
-
The L1117 Series are positive and low dropout three-terminal voltage regulators with
1A output current capability. These devices
are designed for use in low voltage applications that offers lower dropout voltage and
faster transient response.
These devices are fully protected against
over current faults, over temperature operation, reversed input polarity, reversed lead
insertion, transient voltage spike …etc.
On-Chips trimming the reference voltage to
2% and features the low dropout of maximum 1.45 volts.
The L1117 Series regulators offer fixed and
adjustable voltage options available in the
popular industry standard SOT-223, TO-220,
TO-252 and TO-263 packages.
Fixed 2.5V, 2.85V, 3.3V, 5V or adjustable
z
output voltage
Low dropout voltage:
z
1.2V typical at up to 1A
Low ground current
z
Fast transient response
z
Current & thermal lim iting
z
Line regulation: 0.5% typical
z
Load regulation: 0.5% typical
z
SOT-223,TO-220,TO-252,TO-263
z
package
APPLICATIONS
2.85V active SCSI terminators
z
8-15V to 5V linear regulators
z
5V to 2.5V or 3.3V linear regulators
z
Low voltage micro-controllers
z
Battery Chargers
z
Motherboard clock supplies
z
Post regulator for switching supplies
z
Micro-controllers
z
ABSOLUTE MAXIMUM RATINGS
Maximum Supply Voltage 15V*
z
Power Dissipation
z
Thermal Resistance
z
Junction to Case,
Thermal Resistance
z
Junction to Ambient,
θ
JC
θ
JA
SOT-223
TO-252
TO-220
TO-263
* When considering short circuits to ground, the maximum input-to-output differential voltage shall not be allowed
greater than approximate 2~3V at values of supply voltage in excess of 10V , continuous short-circuits can exceed
the power dissipation ratings and cause eventual destruction.
Internally
Limited
16 °C/W
158 °C/W
70 °C/W
50 °C/W
60 °C/W
Operating Junction
z
Temperature Range
Storage Temperature
z
Range
Lead Temperature
z
(Soldering, 10 Seconds)
0 to 125 °C
-40 to 150 °C
260 °C
1
JUL-27-2001
NIKO-SEM
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252,
-
-
ELECTRICAL CHARACTERISTICS for ADJUSTABLE
Parameter
Reference Voltage
(Adjustable version)
Symbol
V
Output Voltage
(Fixed version)
Dropout Vo ltage VD
Line Regulation REG
Load Regulation REG
Minimum Load
Current
Adjust Pin Current I
Current Limit ICL VIN - V
RMS Output Noise VN
Ripple Rejection
Ratio
VIN = 5V, I
REF
VO VIN = 5V, I
V
= 1%, I
REF
+ 1.5V) ≤ V
OUT
IN -VOUT
OUT
(LINE)
(LOAD)
IO
ADJ
Δ
(V
(V
1.5V ≤ (V
0.003%
RA
f = 120Hz, C
VIN = 5V, I
Test Conditions Typical Limits
= 10mA
OUT
= 10mA
OUT
OUT
) = 2V, 10mA ≤ I
IN -VOUT
= 1A
15V, I
≤
IN
) ≤ 5.75V
OUT
OUT
= 10mA
≤ 1A
= 2V 1.2A 1.1A (Min)
= 22µF for ADJ pin,
ADJ
= 1A
OUT
(Unless otherwise specified, TA = 25°C)
1.25V
VO
1.23V
1.27V
0.98V
1.02V
Min
Max
O(Min)
O(Max)
1.2V 1.45V
0.5% 2%
0.5% 2.5%
10mA
55µA 100µA
of V
OUT
72dB 60dB (Min)
ELECTRICAL CHARACTERISTICS for L1117-2.5
Parameter
Symbol
Output Voltage
(Fixed version)
Dropout Vo ltage VD
Line Regulation REG
Load Regulation REG
Minimum Load
Current
GND Pin Current I
Current Limit ICL VIN - V
RMS Output Noise VN
Ripple Rejection
Ratio
V
VIN = 5V, I
O
V
Δ
(V
(LINE)
(LOAD)
IO
GND
(V
1.5V ≤ (V
OUT
IN -VOUT
0.003%
RA
f = 120Hz, Co=22Uf,VIN = 5V,
I
OUT
Test Conditions Typical Limits
OUT
= 1%, I
O
+ 1.5V) ≤ V
) = 2V, 10mA ≤ I
IN -VOUT
= 2V 1.2A 1.1A (Min)
OUT
= 1A
= 10mA
= 1A
OUT
IN
) ≤ 5.75V
15V, I
≤
OUT
OUT
(Unless otherwise specified, TA = 25 °C)
VO
2.45V
2.55V
(Min)
(Max)
1.2V 1.45V
= 10mA
≤ 1A
0.5% 2.0%
0.5% 2.0%
10mA
55µA 100µA
of V
OUT
72dB 60dB (Min)
2
JUL-27-2001
NIKO-SEM
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252,
-
-
ELECTRICAL CHARACTERISTICS for L1117-2.85
Parameter
Symbol
Output Voltage
(Fixed version)
Dropout Vo ltage VD
Line Regulation REG
Load Regulation REG
Minimum Load
Current
GND Pin Current I
Current Limit ICL VIN - V
RMS Output Noise VN
Ripple Rejection
Ratio
VIN = 5V, I
V
O
VO = 1%, I
Δ
(V
(LINE)
(LOAD)
IO
GND
(V
1.5V ≤ (V
OUT
IN -VOUT
0.003%
RA
f = 120Hz, Co=22Uf,VIN = 5V,
I
OUT
Test Conditions Typical Limits
= 10mA
OUT
= 1A
OUT
+ 1.5V) ≤ V
) = 2V, 10mA ≤ I
IN -VOUT
= 2V 1.2A 1.1A (Min)
OUT
= 1A
8V, I
≤
IN
) ≤ 5.75V
OUT
OUT
(Unless otherwise specified, TA = 25 °C)
VO
2.793V
2.907V
(Min)
(Max)
1.2V 1.45V
= 10mA
≤ 1A
0.5% 2.0%
0.5% 2.0%
10mA
55µA 100µA
of V
OUT
72dB 60dB (Min)
ELECTRICAL CHARACTERISTICS for L1117-3.3
Parameter
Symbol
Output Voltage
(Fixed version)
Dropout Vo ltage VD
Line Regulation REG
Load Regulation REG
Minimum Load
Current
GND Pin Current I
Current Limit ICL VIN - V
RMS Output Noise VN
Ripple Rejection
Ratio
VIN = 5V, I
V
O
V
Δ
(V
(LINE)
(LOAD)
IO
GND
(V
1.5V ≤ (V
OUT
IN -VOUT
0.003%
RA
f = 120Hz, Co=22Uf,VIN = 5V,
I
OUT
Test Conditions Typical Limits
OUT
= 1%, I
O
+ 1.5V) ≤ V
) = 2V, 10mA ≤ I
IN -VOUT
= 2V 1.2A 1.1A (Min)
OUT
= 1A
= 10mA
= 1A
OUT
IN
) ≤ 5.75V
15V, I
≤
OUT
OUT
(Unless otherwise specified, TA = 25 °C)
VO
3.234V
3.367V
(Min)
(Max)
1.2V 1.45V
= 10mA
≤ 1A
0.5% 2.0%
0.5% 2.0%
10mA
55µA 100µA
of V
OUT
72dB 60dB (Min)
3
JUL-27-2001
NIKO-SEM
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252,
-
-
ELECTRICAL CHARACTERISTICS for L1117-5
Parameter
Symbol
Output Voltage
(Fixed version)
Dropout Vo ltage VD
Line Regulation REG
Load Regulation REG
Minimum Load
Current
GND Pin Current I
Current Limit ICL VIN - V
RMS Output Noise VN
Ripple Rejection
Ratio
VIN = 8V, I
V
O
VO = 1%, I
Δ
(V
(LINE)
(LOAD)
IO
GND
(V
1.5V ≤ (V
OUT
IN -VOUT
0.003%
RA
f = 120Hz, Co=22uf,VIN = 8V,
I
OUT
Test Conditions Typical Limits
= 10mA
OUT
OUT
+ 1.5V) ≤ V
= 1A
IN
15V, I
≤
) = 2V, 10mA ≤ I
IN -VOUT
= 2V 1.2A 1.1A (Min)
OUT
= 1A
) ≤ 5.75V
(Unless otherwise specified, TA = 25 °C)
VO
4.90V
5.10V
(Min)
(Max)
1.2V 1.45V
OUT
OUT
= 10mA
≤ 1A
0.5% 1.0%
0.5% 1.0%
10mA
55µA 100µA
of V
OUT
72dB 60dB (Min)
DEVICE SELECTION GUIDE
Device
Voltage Version
Package
Marking
L1117L L1117D L1117L-2.5 L1117L-2.85 L1117L-3.3 L1117D-3.3 L1117L-5
ADJ ADJ 2.5 2.85 3.3 3.3 5
SOT-223 TO-252 SOT-223 SOT-223 SOT-223 TO-252 SOT-223
L1117L L1117D L1117L-2.5 L1117L-2.85 L1117L-3.3 L1117D-3.3 L1117L-5
Device
Voltage Version
Package
Marking
L1117D-5 L1117T L1117T-3.3 L1117T-5 L1117S-5
5 ADJ 3.3 5 5
TO-252 TO-220 TO-220 TO-220 TO-263
L1117D-5 L1117T L1117T-3.3 L1117T-5 L1117S-5
4
JUL-27-2001
s
NIKO-SEM
Dropout Linear Regulator (LDO)
TYPICAL APPLICATION
Vin
Cin
10uF
+
L1117
IN
ADJ
Iadj
OUT
Vref
Vo = Vref ( 1+ R2/R1) + Iadj x R2
1A Fixed and Adjustable Low
Vin
4.3v-8V
Cin
10uF
+
IN
R1
R2
Vout
Cout
+
10uF
L1117-2.85
GND
L1117 Series
SOT-223, TO-252,
OUT
Cout
22uF
-
+
-
18
~27 Line
1. Cin needed if dev ice is f ar from from filter capac it or s .
2. Cou t r equired for stability .
- Basic Adjustable Regulator Circuit - - Active SCSI Bus Terminators -
Vin > 4.75V
Cin
10uF
IN
L1117-3.3
GND
+
Vout=3.3V
OUT
Cout
22uF
+
RL
Vin > 4.00V
Cin
10uF
+
IN
L1117-2.5
GND
OUT
Cout
22uF
Vout=2.5V
+
RL
Basic Fixed Output Regulator Circuit Basic Fixed Output Regulator Circuit
Vin>6.5V
IN
L1117-5
OUT
GND
Cin
10uF
+
Cout
22uF
+
RL
Basic Fixed Output Regulator Circuit
5
JUL-27-2001
NIKO-SEM
PIN CONFIGURATIONS
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252,
-
-
Pin # Function
1 Adjust/Ground
2 Output
3 Input
Note: TAB is Output Pin
6
JUL-27-2001
NIKO-SEM
Dimension
A 0.67 0.7 0.73 H 3.3 3.5 3.7
B 6.7 7 7.3 I 0.63 0.65 0.67
C 2.9 3 3.1 J 0.32 0.4
D 2.27 2.3 2.33 K
E 4.57 4.6 4.63 L 0.03 0.1
F 1.5 1.6 1.7 M
G 6.3 6.5 6.7 N
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
SOT-223 MECHANICAL DATA
mm
Min. Typ. Max.
Dimension
L1117 Series
SOT-223, TO-252,
-
mm
Min. Typ. Max.
0°
-
10°
7
JUL-27-2001
NIKO-SEM
Dimension
A 9.35 10.1 H 0.8
B 2.2 2.4 I 6.4 6.6
C 0.48 0.6 J 5.2 5.4
D 0.89 1.5 K 0.6 1
E 0.45 0.6 L 0.64 0.9
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
TO-252 (DPAK) MECHANICAL DATA
mm
Min. Typ. Max.
Dimension
L1117 Series
SOT-223, TO-252,
-
mm
Min. Typ. Max.
-
F 0.03 0.23 M 4.4 4.6
G 6 6.2 N
8
JUL-27-2001
NIKO-SEM
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252,
-
-
TO-220 (3-Lead) MECHANICAL DATA
Dimension
mm
Dimension
Min. Typ. Max.
Min. Typ. Max.
mm
A 9.78 10.16 10.54 H 2.4 2.54 2.68
B 2.61 2.74 2.87 I 1.19 1.27 1.35
C 20 J 4.4 4.6 4.8
D 28.5 28.9 29.3 K 1.14 1.27 1.4
E 14.6 15.0 15.4 L 2.3 2.6 2.9
F 8.4 8.8 9.2 M 0.26 0.46 0.66
G 0.72 0.8 0.88 N
7°
9
JUL-27-2001
NIKO-SEM
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252,
-
-
TO-263 (D2PAK) MECHANICAL DATA
Dimension
mm
Dimension
Min. Typ. Max.
Min. Typ. Max.
mm
A 14.5 15 15.8 H 1.0 1.5 1.8
B 4.2 4.7 I 9.8 10.3
C 1.20 1.35 J 6.5
D 2.8 K 1.5
E 0.3 0.4 0.5 L 0.7 1.4
F -0.102 0.203 M 4.83 5.08 5.33
G 8.5 9 9.5 N
10
JUL-27-2001
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