LM317
3-TERMINAL ADJUSTABLE REGULATOR
SLVS044H – SEPTEMBER 1997 – REVISED DECEMBER 2001
AVAILABLE OPTIONS
PACKAGED DEVICES
TJ
HEAT-SINK
(DCY)†
LM317DCY
HEAT-SINK
MOUNTED, TO-220
(KC)
LM317KC
PLASTIC FLANGE
MOUNTED, POWER FLEX
(KTE)
‡
LM317KTER
0°C to 125°C
† The DCY package also is available taped and reeled, e.g., LM317DCYR.
‡ The KTE package has the same footprint as TO-263 and can be mounted on a TO-263
land pattern. The KTE package is only available taped and reeled.
schematic diagram
INPUT
OUTPUT
ADJUST
absolute maximum ratings over virtual junction temperature range (unless otherwise noted)
§
Input-to-output differential voltage, V
I
– V
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Package thermal impedance,
θ
JA
(see Notes 1 and 2): DCY package . . . . . . . . . . . . . . . . . . . . . . . . . 49°C/W
(see Notes 1 and 3): KC package . . . . . . . . . . . . . . . . . . . . . . . . . . . 25°C/W
(see Notes 1 and 2): KTE package . . . . . . . . . . . . . . . . . . . . . . . . . 23°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
§ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Maximum power dissipation is a function of TJ(max),
θ
JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
2. The package thermal impedance is calculated in accordance with JESD 51-5.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
MIN
VI – VO
IO
TJ
Input-to-output voltage differential
Output current
Operating virtual junction temperature
0
3
MAX
37
1.5
125
UNIT
V
A
°C
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
