LM317MDTX Fairchild Semiconductor, LM317MDTX Datasheet - Page 5

• Manufacturer Part Number: LM317MDTX
• Description: IC REG POS 0.5A ADJ VOLT DPAK
• Manufacturer: Fairchild Semiconductor

Specifications of LM317MDTX

• Regulator Topology: Positive Adjustable
• Voltage - Output: 1.2 ~ 37 V
• Voltage - Input: Up to 40V
• Number Of Regulators: 1
• Current - Output: 500mA (Max)
• Operating Temperature: 0°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: 100 mA
• Line Regulation: 0.04 % / V
• Load Regulation: 0.5 % / V
• Input Voltage Max: 40 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Reference Voltage: 1.3 V
• Primary Input Voltage: 40V
• Output Voltage Adjustable Range: 1.2V To 37V
• No. Of Outputs: 1
• No. Of Pins: 2
• Operating Temperature Range: 0°C To +125°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Current Rating: 0.5A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Dropout (typical): -
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: LM317MDTXFS; LM317MDTXFS; LM317MDTXFSTR

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