LM317LBDR2 ON Semiconductor, LM317LBDR2 Datasheet - Page 8

• Manufacturer Part Number: LM317LBDR2
• Description: Linear Regulators - Standard 100mA ADJ 1.2-37V
• Manufacturer: ON Semiconductor

Specifications of LM317LBDR2

• Polarity: Positive
• Number Of Outputs: 1
• Output Type: Adjustable
• Output Voltage: 1.2 V to 37 V
• Output Current: 0.1 A
• Line Regulation: 0.07 % / V
• Load Regulation: 0.5 %
• Input Voltage Max: 40 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Package / Case: SOIC-8
• Mounting Style: SMD/SMT
• Reference Voltage: 1.3 V
• Voltage Regulation Accuracy: 4 %
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Protection Diodes
it is sometimes necessary to add protection diodes to prevent
the capacitors from discharging through low current points
into the regulator.
protection diodes for output voltages in excess of 25 V or
high capacitance values (C
D
short circuit. Diode D
discharging through the IC during an output short circuit.
The combination of diodes D
discharging through the IC during an input short circuit.
1
When external capacitors are used with any IC regulator
Figure 14 shows the LM317L with the recommended
prevents C
* To provide current limiting of I
to the system ground, the source of
the current limiting diode must be tied to
a negative voltage below - 7.25 V.
R
R
V
I
As shown O < I
Lmin
2
1
O
≥
=
< P
+25V
- I
V
V
in
OV
I
V
I
P
DSS
in
Omax
Figure 20. Adjustable Current Limiter
ref
Figure 22. Slow Turn-On Regulator
< I
+ 1.25 V + V
O
V
O
Adjust
ref
+ I
from discharging thru the IC during an input
< 100 mA - I
Adjust
O
DSS
LM317L
< 95 mA
R
LM317L
2
SS
2
P
protects against capacitor C
O
O
MPS2907
> 10 mF, C
1
V
out
and D
V
out
240
1.25k
R
2
50k
1
500
Adj
R
prevents C
2
> 5.0 mF). Diode
V
V
1N5314
O
SS
+
1N4002
10mF
*
LM317L, NCV317LB
D1
1N914
D2
1N914
Adj
http://onsemi.com
from
I
O
Adj
8
Figure 21. 5.0 V Electronic Shutdown Regulator
V
C
in
V
in
in
V
D
Figure 19. Voltage Regulator with
in
1
protects the device during an input short circuit.
Adjust
Adjust
720
I
I
outmax
outmax
LM317L
Figure 23. Current Regulator
Adjust
LM317L
Protection Diodes
1N4002
LM317L
1N4002
=
=
D
5.0 mA < I
D
1
1
R
2
V
R
R
120
ref
1
1
V
+ R
ref
I
Minimum V
out
Adj
V
V
out
R
R
2
out
< 100 mA
1
1
MPS2222
V
+ I
out
1.0k
+ I
Adj
+
out
R
Adj
1.0mF
^
2
C
= 1.25 V
^
Adj
D
1.25 V
2
1N4002
R
R
TTL
Control
1.25 V
1
1
+ R
+
I
out
C
2
O