LM317M
3-TERMINAL ADJUSTABLE REGULATOR
www.ti.com
SLVS297O–APRIL 2000–REVISED JULY 2006
FEATURES
•
Output Voltage Range Adjustable From
1.25 V to 37 V
•
•
Q Devices Meet Automotive Performance
Requirements
•
•
•
•
Output Current Greater Than 500 mA
Internal Short-Circuit Current Limiting
Thermal-Overload Protection
Customer-Specific Configuration Control Can
Be Supported for Q Devices Along With
Major-Change Approval
Output Safe-Area Compensation
KTP PACKAGE
(TOP VIEW)
KVU (TO-252) PACKAGE
(TOP VIEW)
DCY PACKAGE
(TOP VIEW)
INPUT
INPUT
INPUT
OUTPUT
ADJUST
OUTPUT
ADJUST
ADJUST
DESCRIPTION/ORDERING INFORMATION
The LM317M is an adjustable 3-terminal positive-voltage regulator capable of supplying more than 500 mA over
an output-voltage range of 1.25 V to 37 V. The LM317M is exceptionally easy to use and requires only two
external resistors to set the output voltage. Furthermore, both line and load regulation are better than standard
fixed regulators.
In addition to having higher performance than fixed regulators, the device includes on-chip current limiting,
thermal-overload protection, and safe-operating-area protection. All overload protection remains fully functional if
the ADJUST terminal is disconnected.
Normally, no capacitors are needed unless the device is more than six inches from the input filter capacitors, in
which case an input bypass capacitor is needed. An optional output capacitor can be added to improve transient
response. The ADJUST terminal can be bypassed to achieve high ripple-rejection ratios, which are difficult to
achieve with standard three-terminal regulators.
ORDERING INFORMATION
TJ
PACKAGE(1)
ORDERABLE PART NUMBER
LM317MKTPR
TOP-SIDE MARKING
LM317M
PowerFLEX™ – KTP
Reel of 2000
Tube of 80
LM317MDCY
0°C to 125°C
SOT – DCY
L4
Reel of 2500
Reel of 2500
Reel of 2000
LM317MDCYR
TO-252 – KVU
LM317MKVURG3
LM317MQKTPR
LM317M
317MQ
L5
PowerFLEX – KTP
–40°C to 125°C
LM317MQDCYR
LM317MQDCYRG3
SOT – DCY
Reel of 2500
L8
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerFLEX is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000–2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.