LM237, LM337

3-TERMINAL ADJUSTABLE REGULATORS

SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003

4

POST OFFICE BOX 655303

PARAMETER

TEST CONDITIONS†

LM237, LM337

UNIT

PARAMETER

TEST CONDITIONS†

MIN

TYP

MAX

UNIT

Input regulation‡

VI – VO = –3 V to –40 V

0.01

0.04

%/V

Ripple rejection

VO = –10 V,

60

dB

Ripple rejection

VO = –10 V,

CADJ = 10 µF,

66

77

dB

Output regulation

IO = 10 mA to 1.5 A

|VO| ≤ 5 V

50

mV

Output regulation

IO = 10 mA to 1.5 A

|VO| ≥ 5 V

0.3%

1%

Output noise voltage

0.003%

Minimum output current to maintain regulation

|VI – VO| ≤ 40 V

2.5

10

mA

Minimum output current to maintain regulation

|VI – VO| ≤ 10 V

1.5

6

mA

Peak output current

|VI – VO| ≤ 15 V

1.5

2.2

A

Peak output current

|VI – VO| ≤ 40 V

0.15

0.4

A

Adjustment-terminal current

65

100

µA

Change in adjustment-terminal current

VI – VO = – 2.5 V to –40 V,

IO = 10 mA to MAX

2

5

µA

Reference voltage (output to ADJ)

VI – VO = – 3 V to –40 V,

IO = 10 mA to 1.5 A,

P

≤ rated dissipation

–1.213

–1.25

–1.287

V

† Unless otherwise noted, these specifications apply for the following test conditions |VI – VO| = 5 V and IO = 0.5 A. All characteristics are measured

with a 0.1-

µF capacitor across the input and a 1-µF capacitor across the output. Pulse-testing techniques are used to maintain the junction

temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately.

‡ Input regulation is expressed here as the percentage change in output voltage per 1-V change at the input.