LM317MBDTG ON Semiconductor, LM317MBDTG Datasheet - Page 9

• Manufacturer Part Number: LM317MBDTG
• Description: IC REG VOLT ADJ 500MA DPAK
• Manufacturer: ON Semiconductor

Specifications of LM317MBDTG

• Regulator Topology: Positive Adjustable
• Voltage - Output: 1.2 ~ 37 V
• Voltage - Input: Up to 40V
• Number Of Regulators: 1
• Current - Output: 500mA (Min)
• Current - Limit (min): 500mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TO-252-2, DPak (2 Leads + Tab), TO-252AA, SC-63
• Polarity: Positive
• Number Of Outputs: 1
• Output Type: Adjustable
• Output Voltage: 1.2 V to 37 V
• Output Current: 0.25 A
• Line Regulation: 0.07 % / V
• Load Regulation: 1.5 % / V
• Input Voltage Max: 40 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Reference Voltage: 1.3 V
• Voltage Regulation Accuracy: 4 %
• Primary Input Voltage: 40V
• Output Voltage Adjustable Range: 1.2V To 37V
• No. Of Pins: 4
• Operating Temperature Range: -40°C To +125°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Dropout (typical): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: LM317MBDTGOS

* 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
100
Figure 25. DPAK Thermal Resistance and Maximum
Lmin
40
90
80
70
60
50
O
2
1
V
≥
=
< P
in
Power Dissipation versus PCB Copper Length
0
+25V
- I
V
OV
in
I
V
DSS
I
P
Omax
Figure 21. Adjustable Current Limiter
ref
Figure 23. Slow Turn−On Regulator
< I
+ 1.25 V + V
O
V
Vertically
Mounted
Free Air
Adjust
ref
+ I
< 500 mA - I
Adjust
O
5.0
DSS
LM317M
< 495 mA
R
LM317M
Minimum
2
Size Pad
SS
L, LENGTH OF COPPER (mm)
P
10
O
MPS2907
V
out
V
P
R
out
D(max)
qJA
15
240
1.25k
R
50k
1
for T
500
R
2
A
= 50°C
20
V
V
O
SS
+
1N5314
1N4001
L
10mF
*
2.0 oz. Copper
Î Î Î
Î Î Î
Î Î Î
D1
1N914
D2
1N914
V
25
out
L
http://onsemi.com
I
O
30
2.4
1.6
1.2
0.8
0.4
0
2.0
9
Figure 26. SOT−223 Thermal Resistance and Maximum
280
240
200
160
120
40
80
V
0
Power Dissipation versus PCB Copper Length
in
Figure 22. 5 V Electronic Shutdown Regulator
V
in
Vertically
Mounted
Free Air
D
V
1
5.0
in
protects the device during an input short circuit.
Minimum
Size Pad
Adjust
Adjust
720
I
outmax
LM317M
Figure 24. Current Regulator
L, LENGTH OF COPPER (mm)
LM317M
10
1N4002
=
5.0 mA < I
D
1
P
R
R
D(max)
120
1
qJA
15
V
+ R
ref
I
Minimum V
out
Adj
V
V
out
R
2
out
< 500 mA
for T
1
MPS2222
1.0k
A
+ I
20
= 50°C
+
out
R
Adj
1.0mF
2
Î Î Î Î
Î Î Î Î
Î Î Î Î
= 1.25 V
L
2.0 oz. Copper
^
R
TTL
Control
1.25 V
1
25
+ R
L
V
I
out
out
2
30
2.50
1.25
0.83
0.63
0.50
0.42
0.35