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L1117 Series
SOT-223, TO-252,
TO-220,TO-263
5
1A Fixed and Adjustable Low
Dropout Linear Regulator (LDO)
JUL-27-2001
NIKO-SEM
TYPICAL APPLICATION
- Basic Adjustable Regulator Circuit -
- Active SCSI Bus Terminators -
Vin > 4.75V
Vout=3.3V
+
Cin
10uF
IN
+
Cout
22uF
RL
GND
OUT
L1117-3.3
Basic Fixed Output Regulator Circuit
Basic Fixed Output Regulator Circuit
Vin>6.5V
+
Cin
10uF
IN
+
Cout
22uF
RL
GND
OUT
L1117-5
Basic Fixed Output Regulator Circuit
+
Cin
10uF
R2
+
Cout
10uF
R1
IN
ADJ
OUT
L1117
Vin
1. Cin needed if device is far from from filter capacitors.
Iadj
Vo = Vref (1+R2/R1) + Iadj x R2
Vout
Vref
2. Cout required for stability.
Vin > 4.00V
Vout=2.5V
+
Cin
10uF
IN
+
Cout
22uF
RL
GND
OUT
L1117-2.5
Vin
4.3v-8V
+
Cin
10uF
+
C out
22uF
IN
GND
OUT
L1117-2.85
18~27 Lines