LM317M Fairchild Semiconductor, LM317M Datasheet - Page 5

• Manufacturer Part Number: LM317M
• Description: The LM317M is a 3-terminal adjustable positive voltage regulator capable of supplying in excess of 500mA over an output voltage range of 1
• Manufacturer: Fairchild Semiconductor

LM317M
Typical Application
D1 protects the device during an input short circuit.
5
Input
Input
Input
LM317M
V
ADJ
V
V
ADJ
ADJ
LM317M
R2
LM317M
D1
1N4002
720
Figure 1. 1 5V Electronic Shutdown Regulator
Figure 2. Slow Turn-On Regulator
I
OMAX
I
OMAX
Figure 3. Current Regulator
KSP2222
I
ADJ
=
V
5mA
O
⎛
⎝
=
--------------------- -
R1
V
⎛
⎝
V
---------------- -
REF
+
<
REF
R1
R2
I
O
⎞
⎠
<
⎞
⎠
+
500mA
+
I
MINIMUM V
I
ADJ
KSP2907
ADJ
R1
V
O
≅
≅
120
--------------------- -
R1
V
1.25V
--------------- -
1K
1.25V
R1
O
240
+
R2
O
= 1.25V
R2
50K
TTL CONTROL
I
O
+
+
1.0uF
1N4001
1.0uF
Output
Output
Output