LM317LZRA ON Semiconductor, LM317LZRA Datasheet - Page 8
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LM317LZRA
Manufacturer Part Number
LM317LZRA
Description
IC REG POS 100MA ADJ 4% TO-92
Manufacturer
ON Semiconductor
Datasheet
1.LM317LBZG.pdf
(12 pages)
Specifications of LM317LZRA
Regulator Topology
Positive Adjustable
Voltage - Output
1.2 ~ 37 V
Voltage - Input
Up to 40V
Number Of Regulators
1
Current - Output
100mA (Min)
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-92-3 (Standard Body), TO-226
Polarity
Positive
Number Of Outputs
1
Output Type
Adjustable
Output Voltage
1.2 V to 37 V
Output Current
0.02 A
Line Regulation
0.07 % / V
Load Regulation
0.5 %
Input Voltage Max
40 V
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
0 C
Mounting Style
Through Hole
Reference Voltage
1.3 V
Voltage Regulation Accuracy
4 %
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Dropout (typical)
-
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM317LZRA
Manufacturer:
TI
Quantity:
6 077
Company:
Part Number:
LM317LZRAG
Manufacturer:
ON Semiconductor
Quantity:
234
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