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LM317 Scheda tecnica(PDF) 3 Page - STMicroelectronics

Il numero della parte LM317
Spiegazioni elettronici  1.2V TO 37V VOLTAGE REGULATOR
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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BASIC ADJUSTABLE REGULATOR
ELECTRICAL CHARACTERISTICS (Vi -Vo = 5 V, Io = 500 mA, IMAX = 1.5A and PMAX = 20W, unless
otherwise specified)
Symbol
Parameter
Test Conditions
LM117/LM217
LM317
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
∆Vo
Line Regulation
Vi -Vo = 3 to 40 V
Tj =25
oC
0.01
0.02
0.01
0. 04
%/ V
0.02
0.05
0.02
0. 07
%/ V
∆Vo
Load Regulation
Vo
≤ 5V
Io =10 mA toIMAX
Tj =25
oC5
15
5
25
mV
20
50
20
70
mV
Vo
≥ 5V
Io =10 mA toIMAX
Tj =25
oC
0.1
0. 3
0.1
0.5
%
0.3
1
0.3
1.5
%
IADJ
Adjustment Pin Current
50
100
50
100
µA
∆IADJ
Adjustment Pin Current Vi -Vo = 2.5 to 40 V
Io =10 mA toIMAX
0.2
5
0.2
5
µA
VREF
Reference Voltage
(between pin 3 and pin
1)
Vi -Vo = 2.5 to 40 V
Io =10 mA toIMAX
PD
≤ PMAX
1.21.251. 3
1.2
1.251.3
V
Vo
Vo
Output Voltage
Temperature Stability
11
%
Io(min)
Minimum Load Current Vi -Vo = 40 V
3.5
5
3.5
10
mA
Io(max)
Maximum Load
Current
Vi -Vo
≤ 15 V
PD <PMAX
1.52.2
1.52.2
A
Vi -Vo =40 V
PD <PMAX
Tj =25
oC
0.4
0.4
A
eN
Output Noise Voltage
(percentance of VO)
B = 10Hz to 10KHz
Tj =25
oC
0.003
0.003
%
SVR
Supply Voltage
Rejection (*)
Tj =25
oC
f = 120 Hz
CADJ=0
65
65
dB
CADJ=10
µF 66
80
66
80
dB
(*) CADJ is connected between pin 1 and ground.
Note:
(1) Unless otherwise specified the above specs, apply over the following conditions : LM 117 Tj = – 55 to 150
°C;
LM 217 Tj = – 25 to 150
°C ; LM 317 Tj = 0 to 125°C.
LM117/217/317
3/11


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