© Semiconductor Components Industries, LLC, 2005

May, 2005 − Rev. 10

1

Publication Order Number:

MC78L00A/D

MC78L00A Series,

NCV78L00A

100 mA Positive Voltage

Regulators

The MC78L00A Series of positive voltage regulators are

inexpensive, easy−to−use devices suitable for a multitude of

applications that require a regulated supply of up to 100 mA. Like

their higher powered MC7800 and MC78M00 Series cousins, these

regulators feature internal current limiting and thermal shutdown

making them remarkably rugged. No external components are

required with the MC78L00 devices in many applications.

These devices offer a substantial performance advantage over the

traditional zener diode−resistor combination, as output impedance

and quiescent current are substantially reduced.

Features

and Control Changes

Figure 1. Representative Schematic Diagram

15k

Q1

Q3

Q5

Input

Output

Ground

Q11

Q12

3.0

0−25k

2.85k

5.0k

Q10

3.8k

Q4

Q6

1.2k

1.9k

19k

2.2k

Q9

Q8

C

Q7

1.0k

420

Z1

Q2

Figure 2. Standard Application

A common ground is required between the input and the output voltages. The

input voltage must remain typically 2.0 V above the output voltage even during

the low point on the input ripple voltage.

supply filter.

MC78LXXA

Input

0.33

mF

Output

TO−92

P SUFFIX

CASE 029

See detailed ordering and shipping information in the package

dimensions section on page 9 of this data sheet.

ORDERING INFORMATION

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Pin: 1. Output

2. Ground

3. Input

PIN CONNECTIONS

18

7

6

5

2

3

4

(Top View)

GND

GND

GND

NC

GND

NC

SOIC−8*

D SUFFIX

CASE 751

*SOIC−8 is an internally modified SO−8 package. Pins

2, 3, 6, and 7 are electrically common to the die attach

flag. This internal lead frame modification decreases

package thermal resistance and increases power

dissipation capability when appropriately mounted on

a printed circuit board. SOIC−8 conforms to all exter-

nal dimensions of the standard SO−8 package.

See general marking information in the device marking

section on page 14 of this data sheet.

DEVICE MARKING INFORMATION

2

1

1

8

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