SA1117
1A LDO VOLTAGE REGULATOR
DESCRIPTION
The SA1117 is a positive low voltage dropout regulator, voltage
dropoyut is only 1.2V at 1A.
SA1117 has two versions: the fixed version and the adjustable
version. V
OUT
has a tolerance of less than 1% for fixed versions
1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V and adjustable version
or 2% output accuracy for fixed version 1.2V.
The SA1117 integrates overheating protection and current limit
circuits. It is an suitable for all electronic products.
TO-220-3L
SOT-223-3L
SOT-89-3L
FEATURES
TO-263-3L
TO-252-2L
* 1% accuracy for fixed output V
OUT
while the voltage is 1.5V,
1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V and the adjustable output
V
OUT
* 2% output accuracy for fixed version 1.2V
* Low Dropout Voltage: 1.2V at 1A output current
* Current Limiting
* Thermal Shutdown
* Temperature Range: -40°C to 125°C
APPLICATIONS
* Laptop, Palmtop, and Notebook
Computers
* Battery Charger
* SCSI-|| Active Terminator
* Cellular Phone
* Cordless Telephones
* Battery Powered Systems
* Portable Devices
* SMPS Post-Regulator
ORDERING INFORMATION
(Temperature range: -40°C ~125°C)
SA1117
Circuit type
Package
H: SOT-223-3L
R: SOT-89-3L
T: TO-220-3L
G1: Halogen Free
Blank: Rohs
TR: Tape and Reel
Blank: Stick
ADJ: Adjustable output
1.2: Fixed output 1.2V
1.5: Fixed output 1.5V
1.8: Fixed output 1.8V
2.5: Fixed output 2.5V
2.85: Fixed output 2.85V
3.0: Fixed output 3.0V
3.3: Fixed output 3.3V
5.0: Fixed output 5.0V
D:TO-252-2L
S:TO-263-3L
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http:// www.silan.com.cn
REV:1.1
2008.09.27
Page 1 of 11
SA1117
BLOCK DIAGRAM
ABOSOLUTE MAXIMUM RATINGS
Characteristics
Input Supply Voltage
Lead Temperature (Soldering, 5 seconds)
Operating Junction Temperature Range
Storage Temperature Range
Power Dissipation
ESD Tolerance (Minimum)
(max)
,
Symbol
V
IN
T
Lead
TJ
T
STG
P
D
ESD
Ratings
20
260
150
-65 ~ +150
Internally Limited (Note1)
2000
Unit
V
°C
°C
°C
mW
V
Note1: The maximum allowable power dissipation is a function of maximum operating junction temperature T
J
the junction to ambient thermal resistance
θ
JA
, and the ambient temperature T
amb
. The maximum
allowable power dissipation at any ambient temperature is given: P
D (max)
= (T
J (max)
- T
amb
)/θ
JA,
exceeding the
maximum allowable power limit will result in excessive die temperature; thus, the regulator will go into thermal
shutdown. The junction to ambient thermal resistance
θ
JA
of different packages may be different, and the he
value of
θ
JA
depends on mounting technique.
RECOMMENDED OPERATING CONDITIONS
Characteristics
Input Voltage
Operating Junction Temperature Range
Symbol
V
IN
T
J
Ratings
15
-40 ~ +125
Unit
V
°C
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http:// www.silan.com.cn
REV:1.1
2008.09.27
Page 5 of 11
Power technology
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