CYStech Electronics Corp.
Spec. No. : C506L3
Issued Date : 2003.03.22
Revised Date :2005.10.07
Page No. : 1/4
LM1117L3
CYStek Product Specification
1A Low Dropout Positive Voltage Regulator
LM1117L3
Features Description
Adjustable or Fixed Output The LM1117 series of positive adjustable and fixed
Output Current of 1A regulators are designed to provide 1A with high
Low Dropout, 1.3V max at 1A Output Current efficiency. All internal circuitry is designed to
0.04% Line Regulation operate down to 1.3V input to output differential.
0.2% Load Regulation On-chip trimming adjusts the reference voltage to
100% Thermal Limit Burn-in 1%.
Fast Transient Response
Applications
High Efficiency Linear Regulators
Post Regulators for Switching Supplies
Adjustable Power Supply
Typical Application Data
Fixed Voltage Regulator
Adjustable Voltage Regulator
V
OUT
=V
REF
(1+R2/R1)+I
ADJ
R2
Notes:
1) C1 needed if device is far from filter capacitors
2) C2 minimum value required for stability
C2
10F Tant.Min
V
OUT
=3.3V
C1
10F Tant
V
IN
>4.75V
1
2
3
IN
TAB
GND
OUT
+
V
OUT
=3.45V
C2
10F Tant.Min
R2
232 Ohm,1%
C1
10F, Tant
V
IN
>4.75V
+
IN
TAB
ADJ
OUT
+
CYStech Electronics Corp.
Spec. No. : C506L3
Issued Date : 2003.03.22
Revised Date :2005.10.07
Page No. : 2/4
LM1117L3
CYStek Product Specification
Package Information
SOT-223
Absolute Maximum Ratings
Symbol Parameter
Maximum
Units
PD
Power Dissipation
Internally Limited
W
VIN Input
Voltage
7
V
TJ
Operating Junction Temperature Range
Control Section
Power Transistor
0 to 125
0 to 150
TSTG
Storage Temperature
-65 to 150
TLEAD
Lead Temperature(Soldering, 10 sec)
300
Device Selection Guide
Device
Output Voltage
LM1117-Adj
Adjustable
LM1117-1.5
1.5V
LM1117-1.8
1.8V
LM1117-2.5
2.5V
LM1117-2.85
2.8 5V
LM1117-3.0
3. 0V
LM1117-3.3
3.3V
LM1117-3.5
3.5V
LM1117-5.0
5.0V
Electrical Characteristics @I
LOAD
=0mA,T
J
=25, unless otherwise specified
Parameter Device
Test
Conditions
Min
Typ
Max
Units
V
IN
=5V,I
LOAD
=10mA
1.238
1.250 1.262
Reference voltage
(Note 1)
Adj Version
V
IN
=2.65V to 7V,I
LOAD
=10mA to 1A
*
1.225
1.250 1.275
V
V
IN
=V
OUT
+1.5V
Variator from nominal V
OUT
-1
+1
%
V
IN
=V
OUT
+1.5V to 7V
I
LOAD
=0mA to 1A
Output Voltage
(Note 1)
Al fixed
version
Variator from nominal V
OUT
*
-2
+2 %
Line Regulation (Note 1)
All
I
LOAD
=10mA,(V
OUT
+1.5V)V7V
*
0.04
0.2
Load Regualtion (Note 1)
All
V
IN
=V
OUT
+1.5V, I
LOAD
=10mA to 1A
*
0.2
0.4
%
Minimum Load Current
Adj Version V
IN
=5V,V
ADJ
=0V
*
3
7
mA
Ground Pin Current
All fixed version V
IN
=V
OUT
+1.5V, I
LOAD
=10mA to 1A
*
7
13
mA
Adjust Pin Current
Adj Version
V
IN
=2.65V to 7V, I
LOAD
=10mA
*
55
90
A
Pin Function
1 ADJ/GND
2 OUTPUT
3 INPUT
1 2 3
CYStech Electronics Corp.
Spec. No. : C506L3
Issued Date : 2003.03.22
Revised Date :2005.10.07
Page No. : 3/4
LM1117L3
CYStek Product Specification
Current Limit
All
(V
IN
-V
OUT
)=1.5V
*
1
A
Ripple Rejection (Note 2) All
V
IN
=V
OUT
+1.5V, I
LOAD
= 1A
60
72
dB
Dropout Voltage
(Note 1,3)
All V
IN
2.65V, I
LOAD
= 1A
*
1.15
1.3
V
Temperature Coefficient
All
V
IN
=V
OUT=
1.5V, I
LOAD
= 10mA
*
0.005
%/
The * denotes the specifications which apply over the full temperature range.
Note 1:Low duty pulse testing with Kelvin connections required.
Note 2:120Hz input ripple(CADJ for ADJ=25F)
Note 3:VOUT, VREF=1%.
Representative Circuit Diagram
GND
V
IN
V
OUT
FOR FIXED
VOLTAGE
DEVICE
FOR
ADJUSTABLE
VOLTAGE
DEVICE
ADJ
CYStech Electronics Corp.
Spec. No. : C506L3
Issued Date : 2003.03.22
Revised Date :2005.10.07
Page No. : 4/4
LM1117L3
CYStek Product Specification
SOT-223 Dimension
*: Typical
Inches Millimeters
Inches Millimeters
DIM
Min. Max. Min. Max.
DIM
Min. Max. Min. Max.
A 0.1142
0.1220 2.90 3.10 G 0.0551
0.0709 1.40 1.80
B 0.2638
0.2874 6.70 7.30 H 0.0098
0.0138 0.25 0.35
C 0.1299
0.1457 3.30 3.70 I 0.0008
0.0039 0.02 0.10
D 0.0236
0.0315 0.60 0.80 a1 *13
o
- *13
o
-
E *0.0906 -
*2.30
-
a2 0
o
10
o
0
o
10
o
F
0.2480
0.2638
6.30
6.70
Notes:
1.Controlling dimension: millimeters.
2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material.
3.If there is any question with packing specification or packing method, please contact your local CYStek sales office.
Material:
Lead: 42 Alloy; solder plating
Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
Important Notice:
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek.
CYStek reserves the right to make changes to its products without notice.
CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems.
CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
3
2
1
F
B
A
C
D
E
G
H
a1
a2
I
Style: Pin 1.Adj/Gnd 2.Output
3.Input
3-Lead SOT-223 Plastic
Surface Mounted Package
CYStek Package Code: L3
:
: , 1=A,
2=B,...8=H,
9=J, ...,12=M
-:
Date Code
Part number:
XX: 15 for 1.5V
18 for 1.8V
25 for 2.5V
33 for 3.3V
50 for 5.0V
Blank for ADJ
PDF 
ZIP