Pin 1. Input

2. Ground

3. Output

Tab/Case is Ground or Output

1

1

1

1

TO-3

SOT-223

TO-220

TO-263

2

2

3

2 3

2

3

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LM340, LM340A, LM7805, LM7812, LM7815

SNOSBT0K – FEBRUARY 2000 – REVISED JULY 2016

1

1 Features

1

•

Output Current up to 1.5 A

•

Available in Fixed 5-V, 12-V, and 15-V Options

•

(LM340A)

•

Line Regulation of 0.01% / V of at 1-A Load

(LM340A)

•

Load Regulation of 0.3% / A (LM340A)

•

Internal Thermal Overload, Short-Circuit and SOA

Protection

•

Available in Space-Saving SOT-223 Package

•

Output Capacitance Not Required for Stability

2 Applications

•

Industrial Power Supplies

•

SMPS Post Regulation

•

HVAC Systems

•

White Goods

SPACE

Available Packages

3 Description

The

LM340

and

LM78xx

monolithic

3-terminal

positive voltage regulators employ internal current-

limiting,

thermal

shutdown

and

safe-area

compensation, making them essentially indestructible.

If adequate heat sinking is provided, they can deliver

over 1.5-A output current. They are intended as fixed

voltage regulators in a wide range of applications

including local (on-card) regulation for elimination of

noise and distribution problems associated with

single-point regulation. In addition to use as fixed

voltage regulators, these devices can be used with

external components to obtain adjustable output

voltages and currents.

Considerable effort was expended to make the entire

series of regulators easy to use and minimize the

number of external components. It is not necessary to

bypass the output, although this does improve

transient response. Input bypassing is needed only if

the regulator is located far from the filter capacitor of

the power supply.

LM7805 is also available in a higher accuracy and

better

performance

version

(LM340A).

Refer

to

LM340A specifications in the LM340A Electrical

Characterisitcs table.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM340x

LM78xx

DDPAK/TO-263 (3)

10.18 mm × 8.41 mm

SOT-23 (4)

6.50 mm × 3.50 mm

TO-220 (3)

14.986 mm × 10.16 mm

TO-3 (2)

38.94 mm x 25.40 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Fixed Output Voltage Regulator

*Required if the regulator is located far from

the power supply filter.

**Although no output capacitor is needed

for stability, it does help transient response.

(If needed, use 0.1-μF, ceramic disc).