LM337 datasheet(7/18 Pages) STMICROELECTRONICS

Nome de Peças	LM337

Descrição Electrónicos	Three-terminal adjustable negative voltage regulators

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Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

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LM137 - LM337

Electrical characteristics

7/18

Table 5.

Electrical characteristics of LM337 (TJ = 0 to 150 °C unless otherwise specified).

(1)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VREF

Reference voltage

Ta = 25°C

-1.213

-1.25

-1.287

V

|VI - VO| = 3 to 40 V, TJ = Tmin to Tmax

|IO| = 10mA to |IO(max)|, P ≤ Pmax

-1.2

-1.25

-1.3

KVI

Line regulation (2)

Ta = 25°C

|VI - VO| = 3 to 40 V

IO = 0.1 A

0.01

0.04

%/V

IO = 20 mA

0.01

0.04

KVO

Load regulation (2)

Ta = 25°C

|IO| = 10mA to |IO(max)|

|VO| ≤ 5 V

15

50

mV

|VO| ≥ 5 V

0.3

1

%

Thermal regulation

Ta = 25°C, pulse 10 ms

0.003

0.04

%/W

IADJ

Adjustment pin current

65

100

µA

ΔIADJ

Adjustment pin current

change

Ta = 25°C, |IO| = 10 mA to |IO(max)|

|VI - VO| = 3 to 40 V

25

µA

KVI

Line regulation (2)

|VI - VO| = 3 to 40 V

0.02

0.07

%/V

KVO

Load regulation (2)

|IO| = 10mA to |IO(max)|

|VO| ≤ 5 V

20

70

mV

|VO| ≥ 5 V

0.3

1.5

%

|IO(min)| Minimum load current

|VI - VO| ≤ 40 V

2.5

10

mA

|VI - VO| ≤ 10 V

1.5

6

IOS

Short circuit output current

|VI - VO| ≤ 15 V

1.5

2.2

A

|VI - VO| = 40 V, TJ =2 5°C

0.15

0.4

VNO

RMS output noise

(% of VO)

Ta = 25°C, f = 10 Hz to 10 kHz

0.003

%

RVF

Ripple rejection ratio

VO = -10 V, f = 120 Hz

60

dB

CADJ = 10 µF

66

77

KVT

Temperature stability

0.6

%

KVH

Long term stability

Ta = 125°C, 1000 H

0.3

1

%

1.

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

15 W for TO-220 and 20 W for TO-3 package; IO(max) is 1.5 A.

2.

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

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

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