LM237, LM337

3-TERMINAL ADJUSTABLE REGULATORS

SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003

2

POST OFFICE BOX 655303

schematic diagram

ADJUSTMENT

OUTPUT

INPUT

–40 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

150

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–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.

package thermal data (see Note 1)

PACKAGE

BOARD

θJC

θJA

PowerFLEX

 (KTE)

High K, JESD 51-5

3

°C/W

23

°C/W

PowerFLEX

 (KTP)

High K, JESD 51-5

19

°C/W

28

°C/W

TO-220 (KC)

High K, JESD 51-5

3

°C/W

19

°C/W

NOTE 1: Maximum power dissipation is a function of TJ(max), θJA, 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.

recommended operating conditions

MIN

MAX

UNIT

IO

Output current

|VI – VO| ≤ 40 V,

P

≤ 15 W

10

1500

mA

IO

Output current

|VI – VO| ≤ 10 V,

P

≤ 15 W

6

1500

mA

TJ

Operating virtual junction temperature

LM237

–25

150

°C

TJ

Operating virtual junction temperature

LM337

0

125

°C