CYSTEKEC LM1117-2.5 1a low dropout positive voltage regulator Datasheet

CYStech Electronics Corp.
Spec. No. : C506L3
Issued Date : 2003.03.22
Revised Date :2005.10.07
Page No. : 1/4
1A Low Dropout Positive Voltage Regulator
LM1117L3
Features
Description
Adjustable or Fixed Output
Output Current of 1A
●Low Dropout, 1.3V max at 1A Output Current
●0.04% Line Regulation
●0.2% Load Regulation
●100% Thermal Limit Burn-in
●Fast Transient Response
●
●
The LM1117 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 the reference voltage to
1%.
Applications
High Efficiency Linear Regulators
● Post Regulators for Switching Supplies
● Adjustable Power Supply
●
Typical Application Data
Fixed Voltage Regulator
VIN>4.75V
TAB
3
IN
C1
10μF Tant
OUT
2
VOUT=3.3V
GND
+
1
C2
10μF Tant.Min
Adjustable Voltage Regulator
VIN>4.75V
TAB
IN
C1
10μF, Tant
+
ADJ
VOUT=3.45V
OUT
VOUT=VREF×(1+R2/R1)+IADJ×R2
+
C2
10μF Tant.Min
R2
232 Ohm,1%
Notes:
1) C1 needed if device is far from filter capacitors
2) C2 minimum value required for stability
LM1117L3
CYStek Product Specification
Spec. No. : C506L3
Issued Date : 2003.03.22
Revised Date :2005.10.07
Page No. : 2/4
CYStech Electronics Corp.
Package Information
1
2
Pin
1
2
3
3
Function
ADJ/GND
OUTPUT
INPUT
SOT-223
Absolute Maximum Ratings
Symbol
Parameter
PD
VIN
TJ
Power Dissipation
Input Voltage
Operating Junction Temperature Range
Control Section
Power Transistor
Storage Temperature
Lead Temperature(Soldering, 10 sec)
TSTG
TLEAD
Maximum
Units
Internally Limited
7
W
V
0 to 125
0 to 150
-65 to 150
300
℃
℃
℃
Device Selection Guide
Device
LM1117-Adj
LM1117-1.5
LM1117-1.8
LM1117-2.5
LM1117-2.85
LM1117-3.0
LM1117-3.3
LM1117-3.5
LM1117-5.0
Output Voltage
Adjustable
1.5V
1.8V
2.5V
2.8 5V
3. 0V
3.3V
3.5V
5.0V
Electrical Characteristics @ILOAD=0mA,TJ=25℃, unless otherwise specified
Parameter
Reference voltage
(Note 1)
Output Voltage
(Note 1)
Device
Adj Version
Al fixed
version
Test Conditions
VIN=5V,ILOAD=10mA
VIN=2.65V to 7V,ILOAD=10mA to 1A
Min
Typ
Max
1.238 1.250 1.262
*
VIN=VOUT+1.5V
Variator from nominal VOUT
1.225 1.250 1.275
Units
V
-1
+1
%
-2
+2
%
VIN=VOUT+1.5V to 7V
ILOAD=0mA to 1A
*
Variator from nominal VOUT
Line Regulation (Note 1)
All
ILOAD=10mA,(VOUT+1.5V)≦V≦7V
*
0.04
0.2
Load Regualtion (Note 1)
All
VIN=VOUT+1.5V, ILOAD=10mA to 1A
*
0.2
0.4
%
Adj Version
VIN=5V,VADJ=0V
All fixed version VIN=VOUT+1.5V, ILOAD=10mA to 1A
Adj Version
VIN=2.65V to 7V, ILOAD=10mA
*
*
*
3
7
55
7
13
90
mA
mA
µA
Minimum Load Current
Ground Pin Current
Adjust Pin Current
LM1117L3
CYStek Product Specification
Spec. No. : C506L3
Issued Date : 2003.03.22
Revised Date :2005.10.07
Page No. : 3/4
CYStech Electronics Corp.
Current Limit
All
Ripple Rejection (Note 2) All
Dropout Voltage
All
(Note 1,3)
(VIN-VOUT)=1.5V
VIN=VOUT+1.5V, ILOAD= 1A
VIN≧2.65V, ILOAD= 1A
*
72
1.15
Temperature Coefficient
VIN=VOUT=1.5V, ILOAD= 10mA
*
0.005
All
*
1
60
1.3
A
dB
V
%/℃
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=25μF)
Note 3:△VOUT, △VREF=1%.
Representative Circuit Diagram
VIN
FOR FIXED
VOLTAGE
DEVICE
VOUT
ADJ
FOR
ADJUSTABLE
VOLTAGE
DEVICE
LM1117L3
GND
CYStek Product Specification
Spec. No. : C506L3
Issued Date : 2003.03.22
Revised Date :2005.10.07
Page No. : 4/4
CYStech Electronics Corp.
SOT-223 Dimension
A
B
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
C
1
2
3
Date Code
左一: 西元年末碼
左二: 月碼, 1=A,
2=B,…8=H,
9=J, …,12=M
左三-四: 流水號
D
E
F
H
G
a1
Style:
I
a2
Pin
1.Adj/Gnd
3.Input
2.Output
3-Lead SOT-223 Plastic
Surface Mounted Package
CYStek Package Code: L3
*: Typical
Inches
Min.
Max.
0.1142
0.1220
0.2638
0.2874
0.1299
0.1457
0.0236
0.0315
*0.0906
0.2480
0.2638
DIM
A
B
C
D
E
F
Millimeters
Min.
Max.
2.90
3.10
6.70
7.30
3.30
3.70
0.60
0.80
*2.30
6.30
6.70
DIM
G
H
I
a1
a2
Inches
Min.
Max.
0.0551
0.0709
0.0098
0.0138
0.0008
0.0039
*13o
o
0
10 o
Millimeters
Min.
Max.
1.40
1.80
0.25
0.35
0.02
0.10
*13o
o
0
10 o
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.
LM1117L3
CYStek Product Specification
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