LM137 Просмотр технического описания (PDF) - STMicroelectronics

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LM137

NEGATIVE VOLTAGE REGULATORS THREE-TERMINAL ADJUSTABLE

STMicroelectronics 

LM137-LM237-LM337

ELECTRICAL CHARACTERISICS

LM137: -55 oC < Tj < 150 oC

LM237: -25 oC < Tj < 150 oC

LM337: 0 oC < Tj < 150 oC

VI - VO = 5V, IO = 0.5 A (unless otherwise specified)

Symbol

Parameter

LM137/LM237

LM337

Unit

Min. Typ. Max. Min. Typ. Max.

Vref

KVI

KVO

Iadj

∆Iadj

KVI

KVO

|IO(min)|

IOS

VNO

Rvf

KVT

KVH

Reference Voltage

Tamb = 25 oC

Tmin ≤ Tj ≤ Tmax

3V ≤ |VI - VO| ≤ 40V, 10mA ≤ |IO| ≤ |IO(max)|

P ≤ Pmax

-1.225

-1.2

Line Regulation

(Tamb = 25 oC, 3V ≤ |VI -VO| ≤ 40V) - Note 2

IO = 0.1 A

IO = 20 mA

Load Regulation

(Tamb = 25 oC, 10mA ≤ |IO| ≤ |IO(max)|) - Note 2

|VO| ≤ 5V

|VO| ≥ 5V

Thermal Regulation (Tamb = 25 oC, pulse 10 ms)

Adjustment Pin Current

Adjustment Pin Current Change

(Tamb = 25 oC, 10mA ≤ |IO| ≤ |IO(max)|,

3V ≤ |VI -VO| ≤ 40V)

Line Regulation (3V ≤ |VI -VO| ≤ 40V) - Note 2

Load Regulation

(10mA ≤ |IO| ≤ |IO(max)|) - Note 2

|VO| ≤ 5V

|VO| ≥ 5V

Minimum Load Current

|VI -VO| ≤ 40V

|VI -VO| ≤ 10V

Short Circuit Output Current

|VI -VO| ≤ 15V (TO-3 and TO-220)

|VI -VO| ≤ 15V (TO-39)

|VI -VO| = 40V, Tj = 25 oC (TO-3 and TO-220)

|VI -VO| = 40V, Tj = 25 oC (TO-39)

1.5

0.5

0.24

0.15

RMS Output Noise (% of VO)

Tamb = 25 oC, 10Hz ≤ f ≤ 10KHz

Ripple Rejection Ratio

VO = - 10 V, f = 120 Hz

Cadj = 10 µF

66

Temperature Stability

Long Term Stability (Tamb = 125 oC, 1000H)

-1.25

-1.25

0.01

0.01

15

0.3

0.002

65

2

0.02

20

0.3

2.5

1.2

2.2

0.4

0.2

0.003

60

77

0.6

0.3

-1.275 -1.213

-1.3 -1.2

0.02

0.02

25

0.5

0.02

100

5

0.05

50

1

5

3

1.5

0.5

0.15

0.1

66

1

-1.25

-1.25

0.01

0.01

15

0.3

0.003

65

2

0.02

20

0.3

2.5

1.5

2.2

0.4

0.2

0.003

60

77

0.6

0.3

-1.287

-1.3

0.04

0.04

50

1

0.04

100

5

0.07

70

1.5

10

6

1

V

%/V

%/V

mV

%

%/W

µA

µA

%/V

mV

%

mA

mA

A

A

A

A

%

dB

dB

%

%

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

IO(max) is :

• 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.

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