LM337K datasheet(4/14 Pages) STMICROELECTRONICS

部件名	LM337K

功能描述	THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATORS

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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ELECTRICAL CHARACTERISICS

LM137: -55

o C< Tj < 150 oC

LM237: -25

o C< 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

Reference Voltage

Tamb =25

oC

Tmin

≤ Tj ≤ Tmax

3V

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

P

≤ Pmax

-1.225

-1.2

-1.25

-1.275

-1.3

-1.213

-1.2

-1.25

-1.287

-1.3

V

KVI

Line Regulation

(Tamb =25

oC, 3V ≤ |VI -VO| ≤ 40V) - Note 2

IO = 0.1 A

IO =20 mA

0.01

0.02

0.01

0.04

%/V

KVO

Load Regulation

(Tamb =25

oC, 10mA ≤ |IO| ≤ |IO(max)|) - Note 2

|VO|

≤ 5V

|VO|

≥ 5V

15

0.3

25

0.5

15

0.3

50

1

mV

%

Thermal Regulation (Tamb =25

oC, pulse 10 ms)

0.002

0.02

0.003

0.04

%/W

Iadj

Adjustment Pin Current

65

100

65

100

µA

∆Iadj

Adjustment Pin Current Change

(Tamb =25

oC, 10mA ≤ |IO| ≤ |IO(max)|,

3V

≤ |VI -VO| ≤ 40V)

25

2

5

µA

KVI

Line Regulation (3V

≤ |VI -VO| ≤ 40V) - Note 2

0.02

0.05

0.02

0.07

%/V

KVO

Load Regulation

(10mA

≤ |IO| ≤ |IO(max)|) - Note 2

|VO|

≤ 5V

|VO|

≥ 5V

20

0.3

50

1

20

0.3

70

1.5

mV

%

|IO(min)|

Minimum Load Current

|VI -VO|

≤ 40V

|VI -VO|

≤ 10V

2.5

1.2

5

3

2.5

1.5

10

6

mA

IOS

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

2.2

0.4

0.2

1.5

0.5

0.15

0.1

2.2

0.4

0.2

A

VNO

RMS Output Noise (% of VO)

Tamb =25

oC, 10Hz ≤ f ≤ 10KHz

0.003

%

Rvf

Ripple Rejection Ratio

VO = - 10 V, f = 120 Hz

Cadj =10

µF66

60

77

66

60

77

dB

KVT

Temperature Stability

0.6

%

KVH

Long Term Stability (Tamb = 125

oC, 1000H)

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

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.

LM137-LM237-LM337

4/14

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