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參數(shù)資料
| 型號(hào)： | LM317M |
| 廠(chǎng)商： | ON SEMICONDUCTOR |
| 英文描述： | 500 mA Adjustable Output, Positive Voltage Regulator(3端可調(diào)正向穩(wěn)壓器) |
| 中文描述： | 500毫安可調(diào)輸出，正電壓穩(wěn)壓器（三端可調(diào)正向穩(wěn)壓器） |
| 文件頁(yè)數(shù)： | 9/13頁(yè) |
| 文件大?。?/td> | 158K |
| 代理商： | LM317M |
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LM317M
http://onsemi.com
9
Figure 21. Adjustable Current Limiter
Figure 22. 5 V Electronic Shutdown Regulator
Figure 23. Slow TurnOn Regulator
Figure 24. Current Regulator
V
ref
+25V
V
in
LM317M
V
out
R
1
V
O
1.25k
Adjust
I
O
D2
1N914
1N5314
R
2
500
* To provide current limiting of I
O
to the system ground, the source of
the current limiting diode must be tied to
a negative voltage below 7.25 V.
R
2
≥
V
ref
I
DSS
R
1
=
V
SS
*
D1
1N914
V
O
< P
OV
+ 1.25 V + V
SS
I
Lmin
I
P
< I
O
< 500 mA I
P
As shown O < I
O
< 495 mA
+
10 F
V
in
V
out
240
1N4001
LM317M
Adjust
MPS2907
R
2
50k
V
in
D
1
1N4002
V
out
120
Adjust
720
+
1.0 F
MPS2222
1.0k
TTL
Control
LM317M
Minimum V
out
= 1.25 V
D
1
protects the device during an input short circuit.
LM317M
V
in
R
1
R
2
Adjust
I
Adj
I
out
5.0 mA < I
out
< 100 mA
V
out
I
outmax
=
V
ref
+ I
Adj
1.25 V
R
1
+ R
2
V
out
V
out
V
in
I
Omax
+ I
DSS
R
1
+ R
2
40
50
60
70
80
90
100
0
0.4
0.8
1.2
1.6
2.0
2.4
0
10
20
30
25
15
5.0
L, LENGTH OF COPPER (mm)
P
D(max)
for T
A
= 50
°
C
Minimum
Size Pad
L
Free Air
Mounted
Vertically
R
JA
2.0 oz. Copper
Figure 25. DPAK Thermal Resistance and Maximum
Power Dissipation versus PCB Copper Length
Figure 26. SOT223 Thermal Resistance and Maximum
Power Dissipation versus PCB Copper Length
40
80
120
160
200
240
280
0.35
0.42
0.50
0.63
0.83
1.25
2.50
0
10
20
30
25
15
5.0
L, LENGTH OF COPPER (mm)
P
D(max)
for T
A
= 50
°
C
Minimum
Size Pad
L
Free Air
Mounted
Vertically
R
JA
2.0 oz. Copper
R
θ
,
J
J
°
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM317 | 3-TERMINAL ADJUSTABLE REGULATORS |
| LM317D2T | 1.2V TO 37V VOLTAGE REGULATOR |
| LM317K | 1.2V TO 37V VOLTAGE REGULATOR |
| LM317P | 1.2V TO 37V VOLTAGE REGULATOR |
| LM317T | 1.2V TO 37V VOLTAGE REGULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM317M/D | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Three-Terminal Adjustable Output Positive Voltage Regulator |
| LM317M_06 | 制造商:ONSEMI 制造商全稱(chēng):ON Semiconductor 功能描述:500 mA Adjustable Output, Positive Voltage Regulator |
| LM317M_07 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:3-TERMINAL ADJUSTABLE REGULATOR |
| LM317M_0701 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:3-TERMINAL ADJUSTABLE REGULATOR |
| LM317M_08 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:3-TERMINAL ADJUSTABLE REGULATOR |
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