LM317MDT ON Semiconductor, LM317MDT Datasheet - Page 5

• Manufacturer Part Number: LM317MDT
• Description: Linear Regulators - Standard 500mA ADJ 1.2-37V
• Manufacturer: ON Semiconductor

Specifications of LM317MDT

• 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: 0 C
• Package / Case: DPAK
• Mounting Style: SMD/SMT
• Reference Voltage: 1.3 V
• Voltage Regulation Accuracy: 4 %
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

* Pulse Testing Required:
1% Duty Cycle is suggested.
24V
14V
f = 120 Hz
*Pulse Testing Required:
1% Duty Cycle is suggested.
V
V
in
C
I
in
0.1mF
C
in
V
in
C
in
0.1mF
V
0.1mF
in
Figure 4. Load Regulation and DI
V
LM317M
in
I
Adj
Adjust
R
1%
2
Figure 6. Ripple Rejection Test Circuit
LM317M
I
I
SET
Adj
Figure 5. Standard Test Circuit
LM317M
R
Load Regulation (mV) = V
Load Regulation (% V
2
Adjust
R
1%
2
Adjust
V
1.65K
1%
out
http://onsemi.com
To Calculate R
V
Assume I
out
R
1
= I
SET
V
240
1%
SET
V
out
out
5
R
R
**
C
O
2
1
= 5.25 mA
Adj
I
) =
L
2
+ 1.250 V
**C
:
R
* D
C
O
1
O
240
1%
(min Load) -V
Adj
V
1
O
Adj
Discharges C
+
provides an AC ground to the adjust pin.
(min Load) - V
240
1%
10mF
+
/Load Test Circuit
1.0mF
V
O
V
(min Load)
ref
O
Adj
(max Load)
O
if Output is Shorted to Ground.
D
1N4002
I
(max Load)
L
1
C
*
O
*
C
O
+
1mF
+
1.0mF
(max Load)
X 100
R
L
R
L
R
L
VO (max Load)
R
(min Load)
L
V
O
V
V
out
(min Load)
O
= 10 V
V
O