ELECTRICAL CHARACTERISICS

LM137: -55

LM237: -25

LM337: 0

Symbol

Parameter

LM137/LM237

LM337

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

Reference Voltage

3V

P

-1.225

-1.2

-1.25

-1.25

-1.275

-1.3

-1.213

-1.2

-1.25

-1.25

-1.287

-1.3

V

Line Regulation

0.01

0.01

0.02

0.02

0.01

0.01

0.04

0.04

%/V

%/V

Load Regulation

≤ 5V

≥ 5V

15

0.3

25

0.5

15

0.3

50

1

mV

%

0.002

0.02

0.003

0.04

%/W

Adjustment Pin Current

65

100

65

100

µA

Adjustment Pin Current Change

3V

25

2

5

µA

Line Regulation (3V

0.02

0.05

0.02

0.07

%/V

Load Regulation

(10mA

≤ 5V

≥ 5V

20

0.3

50

1

20

0.3

70

1.5

mV

%

Minimum Load Current

≤ 40V

≤ 10V

2.5

1.2

5

3

2.5

1.5

10

6

mA

mA

Short Circuit Output Current

≤ 15V (TO-3 and TO-220)

≤ 15V (TO-39)

1.5

0.5

0.24

0.15

2.2

0.4

0.2

1.5

0.5

0.15

0.1

2.2

0.4

0.2

A

A

A

A

0.003

0.003

%

Ripple Rejection Ratio

µF66

60

77

66

60

77

dB

dB

Temperature Stability

0.6

0.6

%

0.3

1

0.3

1

%

Notes : 1. Although power dissipation is internally limited, these specifications are applicable for power dissipation of :

• 2W for TO-39

• 15W for TO-220

• 20W for TO-3 Package

• 1.5A for TO-3 and TO-220

• 0.5A for TO-39

2. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in out-

put voltage due to heating effects are covered under the specification for thermal regulation.

LM137-LM237-LM337

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