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PDF L1117 Data sheet ( Hoja de datos )
| Número de pieza | L1117 | |
| Descripción | 1A Fixed and Adjustable Low Dropout Linear Regulator (LDO) | |
| Fabricantes | ETC | |
| Logotipo |  |
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NIKO-SEM
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252,
TO-220,TO-263
GENERAL DESCRIPTION
The L1117 Series are positive and low drop-
out three-terminal voltage regulators with
1A output current capability. These devices
are designed for use in low voltage applica-
tions that offers lower dropout voltage and
faster transient response.
These devices are fully protected against
over current faults, over temperature oper-
ation, reversed input polarity, reversed lead
insertion, transient voltage spike …etc.
On-Chips trimming the reference voltage to
2% and features the low dropout of maxi-
mum 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.
FEATURES
z Fixed 2.5V, 2.85V, 3.3V, 5V or adjustable
output voltage
z Low dropout voltage:
1.2V typical at up to 1A
z Low ground current
z Fast transient response
z Current & thermal limiting
z Line regulation: 0.5% typical
z Load regulation: 0.5% typical
zSOT-223,TO-220,TO-252,TO-263
package
APPLICATIONS
z 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
ABSOLUTE MAXIMUM RATINGS
z Maximum Supply Voltage
z Power Dissipation
z Thermal Resistance
Junction to Case, θJC
z Thermal Resistance
Junction to Ambient, θJA
SOT-223
TO-252
TO-220
TO-263
15V*
Internally
Limited
16 °C/W
158 °C/W
70 °C/W
50 °C/W
60 °C/W
z Operating Junction
Temperature Range
z Storage Temperature
Range
z Lead Temperature
(Soldering, 10 Seconds)
0 to 125 °C
-40 to 150 °C
260 °C
* 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.
DataSheet4 U .com
1 JUL-27-2001
1 page  
www.DataSheet4U.com
NIKO-SEM
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252,
TO-220,TO-263
TYPICAL APPLICATION
Vin
Cin
10uF
+
L1117
IN OUT
ADJ
Vref
Iadj
Vout
R1
Cout
+
10uF
R2
Vin
4.3v-8V IN
OUT
L1117-2.85
Cin
+
10uF
GND
Cout
+ 18~27 Lines
22uF
Vo = Vref (1+R2/R1) + Iadj x R2
1. Cin needed if device is far from from filter capacitors.
2. Cout required for stability.
- Basic Adjustable Regulator Circuit -
- Active SCSI Bus Terminators -
Vin > 4.75V
IN
L1117-3.3
OUT
Vout=3.3V
Cin
+
10uF
GND
Cout
+
22uF
RL
Vin > 4.00V
IN
L1117-2.5
OUT
Vout=2.5V
Cin
+
10uF
GND
Cout
+
22uF
RL
Basic Fixed Output Regulator Circuit
Vin>6.5V
IN
L1117-5
OUT
Cin
10uF
+
GND
Cout
22uF
+
RL
Basic Fixed Output Regulator Circuit
Basic Fixed Output Regulator Circuit
5
DataSheet4 U .com
JUL-27-2001
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet L1117.PDF ] | |
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