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Order this document by LM340/D

LM340, A

Series

Three-Terminal Positive

Fixed Voltage Regulators

This family of fixed voltage regulators are monolithic integrated circuits

capable of driving loads in excess of 1.0 A. These three鈥搕erminal regulators

employ internal current limiting, thermal shutdown, and safe鈥揳rea

compensation. Devices are available with improved specifications, including

a 2% output voltage tolerance, on A鈥搒uffix 5.0, 12 and 15 V device types.

Although designed primarily as a fixed voltage regulator, these devices

can be used with external components to obtain adjustable voltages and

currents. This series of devices can be used with a series鈥損ass transistor to

boost output current capability at the nominal output voltage.

鈥?/div>

Output Current in Excess of 1.0 A

THREE鈥揟ERMINAL

POSITIVE FIXED

VOLTAGE REGULATORS

SEMICONDUCTOR

TECHNICAL DATA

鈥?/div>

No External Components Required

Output Voltage Offered in 2% and 4% Tolerance*

Internal Thermal Overload Protection

Internal Short Circuit Current Limiting

Output Transistor Safe鈥揂rea Compensation

T SUFFIX

PLASTIC PACKAGE

CASE 221A

Pin 1. Input

2. Ground

3. Output

1

2

3

Heatsink surface is connected to Pin 2.

Simplified Application

Input

LM340鈥揦X

Output

CO**

ORDERING INFORMATION

Device

LM340T鈥?.0

LM340AT鈥?.0

LM340T鈥?.0

LM340T鈥?2

LM340AT鈥?2

LM340T鈥?5

LM340AT鈥?5

LM340T鈥?8

LM340T鈥?4

Output Voltage

and Tolerance

5.0 V

鹵

4%

5.0 V

鹵

2%

6.0 V

鹵

4%

8.0 V

鹵

4%

12 V

鹵

4%

12 V

鹵

2%

15 V

鹵

4%

15 V

鹵

2%

18 V

鹵

4%

24 V

鹵

4%

TJ = 0擄 to +125擄C

0

12 C

Plastic P

Pl i Power

Operating

Temperature Range

Package

Cin*

0.33碌F

A common ground is required between the input and

the output voltages. The input voltage must remain

typically 1.7 V above the output voltage even during

the low point on the input ripple voltage.

XX these two digits of the type number indicate

voltage.

* Cin is required if regulator is located an

appreciable distance from power supply filter.

** CO is not needed for stability; however, it does

improve transient response. If needed, use a

0.1

碌F

ceramic disc.

* 2% regulators are available in 5, 12 and 15 V devices.

漏

Motorola, Inc. 1996

Rev 1

MOTOROLA ANALOG IC DEVICE DATA

1

型號(hào)

版本

描述

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LM340T-18 Datasheet

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