Bay Linear LM317T, LM317S, LM317D Datasheet
Bay Linear, Inc
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com
3-Terminal 1.5Amp Adjustable Voltage Regulator
LM317
Packaging Information
Ordering Information
Device Package Type Output
LM317T TO-220 1.5 Amp
LM317N SOT-223 1.0 Amp
LM317S TO-263 1.5 Amp
LM317D TO-252 1.5 Amp
SOT-223 Vs. TO-252 Package
Description
The Bay Linear LM317 are monolithic integrated circuit in
TO- 220, TO-252, SOT-223 and D2PAK packages intended
for use as positive adjustable voltage regulators.
They are designed to supply more than 1.5A of load current
with an output voltage adjustable over a 1.2 to 37V range.
The nominal output voltage is selected by means of only a
resistive divider, making the device exceptionally easy to use
and eliminating the stocking of many fixed regulators.
Features
• Output Current of 1.5A
• Output Voltage Tolerance of 5%
• Adjustable Output 1.2V to 37V
• 0.1% Load & Line Regulation
• Internal Short-Circuit Limited
• Current Limit
• Offer in plastic TO-252, TO-220, SOT-223
& TO-263
• Direct Replacement for LM317
Applications
• Post regulator for switching DC/DC
converter
• Bias supply for analog circuits
Bay Linear
Inspire the Linear Power
Top View
TO-263-3 (
1
Bay Linear
2
3
Top View
TO-263-3 (S)
1
Bay Linear
2
3
Top View
TO-263-3 (
1
Bay Linear
2
3
Top View
TO-263-3 (S)
1
Bay Linear
2
3
1. ADJ
2. Output
3. Input
Bay Linear, Inc
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com
LM317
Absolute Maximum Rating
Parameter LM317 Unit
Power Dissipation Internally Limited
Input Voltage Differential +40V, -0.3V V
Operating Free-Air, Case, Virtual Junction Temp. 0 to 150
Storage Temperature Range -65 to 150
Lead temperature 1.6 mm from case for sec. 260
°C
Electrical Characteristics (LM317)
Parameter Symbol Conditions MIN TYP MAX UNIT
Reference Voltage V
O
3V≤(VIN-V
OUT
) ≤40V
10mA≤I
OUT≤IMAX
, P≤P
MAX
1.20 1.25 1.30 V
0.01 0.02 Line Regulation
∆V
O
3V≤(VIN-V
OUT
) ≤40V (Note 4)
0.02 0.05
%/V
0.1 0.3 Load Regulation
∆V
O
10mA≤I
OUT
≤I
MAX
(Note 4)
0.3 1
%
%
VI = 10V,, f=120Hz
C
ADJ
=0µF
65 dB
Ripple Rejection RR
V
I
= 10V,, f=120Hz
C
ADJ
=10µF
66 80 dB
Thermal Regulation
20ms 0.03 0.07 %W
Adjustment Pin
Current
50 100 µA
Adjustment Pin
Current Change
10mA≤I
OUT≤IMAX
,
3V≤(V
IN-VOUT
) ≤40V
0.2 5 µA
Temperature Stability T
MIN≤TJ≤TMAX
1 %
Long Term Stability
T
J
=125°C, 1000 hrs
0.3 1 %
RMS Output Noise %
of V
OUT
10Hz≤f≤10KHz 0.003 %
Minimum Load
Current
(VIN-V
OUT
) =40V 3.5 5 mA
(VIN-V
OUT
) ≤15V
P
D≤PMAX
1.5 2.2 A Maximum Load
Current
(V
IN-VOUT
) ≤40V
P
D≤PMAX
0.4 A
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